phpQuery.php

<?php

/**
 * phpQuery is a server-side, chainable, CSS3 selector driven
 * Document Object Model (DOM) API based on jQuery JavaScript Library.
 *
 * @version 1.0.0
 * @link http://code.google.com/p/phpquery/
 * @link http://phpquery-library.blogspot.com/
 * @link http://jquery.com/
 * @author Tobiasz Cudnik <tobiasz.cudnik/gmail.com>
 * @license http://www.opensource.org/licenses/mit-license.php MIT License
 * @package phpQuery
 */

// class names for instanceof
// TODO move them as class constants into phpQuery
define('DOMDOCUMENT', 'DOMDocument');
define('DOMELEMENT', 'DOMElement');
define('DOMNODELIST', 'DOMNodeList');
define('DOMNODE', 'DOMNode');

/**
 * DOMEvent class.
 *
 * Based on
 * @link http://developer.mozilla.org/En/DOM:event
 * @author Tobiasz Cudnik <tobiasz.cudnik/gmail.com>
 * @package phpQuery
 * @todo implement ArrayAccess ?
 */
class DOMEvent
{
	/**
	 * Returns a boolean indicating whether the event bubbles up through the DOM or not.
	 *
	 * @var unknown_type
	 */
	public $bubbles = true;
	/**
	 * Returns a boolean indicating whether the event is cancelable.
	 *
	 * @var unknown_type
	 */
	public $cancelable = true;
	/**
	 * Returns a reference to the currently registered target for the event.
	 *
	 * @var unknown_type
	 */
	public $currentTarget;
	/**
	 * Returns detail about the event, depending on the type of event.
	 *
	 * @var unknown_type
	 * @link http://developer.mozilla.org/en/DOM/event.detail
	 */
	public $detail;	// ???
	/**
	 * Used to indicate which phase of the event flow is currently being evaluated.
	 *
	 * NOT IMPLEMENTED
	 *
	 * @var unknown_type
	 * @link http://developer.mozilla.org/en/DOM/event.eventPhase
	 */
	public $eventPhase;	// ???
	/**
	 * The explicit original target of the event (Mozilla-specific).
	 *
	 * NOT IMPLEMENTED
	 *
	 * @var unknown_type
	 */
	public $explicitOriginalTarget; // moz only
	/**
	 * The original target of the event, before any retargetings (Mozilla-specific).
	 *
	 * NOT IMPLEMENTED
	 *
	 * @var unknown_type
	 */
	public $originalTarget;	// moz only
	/**
	 * Identifies a secondary target for the event.
	 *
	 * @var unknown_type
	 */
	public $relatedTarget;
	/**
	 * Returns a reference to the target to which the event was originally dispatched.
	 *
	 * @var unknown_type
	 */
	public $target;
	/**
	 * Returns the time that the event was created.
	 *
	 * @var unknown_type
	 */
	public $timeStamp;
	/**
	 * Returns the name of the event (case-insensitive).
	 */
	public $type;
	public $runDefault = true;
	public $data = null;
	public function __construct($data)
	{
		foreach ($data as $k => $v) {
			$this->$k = $v;
		}
		if (!$this->timeStamp)
			$this->timeStamp = time();
	}
	/**
	 * Cancels the event (if it is cancelable).
	 *
	 */
	public function preventDefault()
	{
		$this->runDefault = false;
	}
	/**
	 * Stops the propagation of events further along in the DOM.
	 *
	 */
	public function stopPropagation()
	{
		$this->bubbles = false;
	}
}


/**
 * DOMDocumentWrapper class simplifies work with DOMDocument.
 *
 * Know bug:
 * - in XHTML fragments, <br /> changes to <br clear="none" />
 *
 * @todo check XML catalogs compatibility
 * @author Tobiasz Cudnik <tobiasz.cudnik/gmail.com>
 * @package phpQuery
 */
class DOMDocumentWrapper
{
	/**
	 * @var DOMDocument
	 */
	public $document;
	public $id;
	/**
	 * @todo Rewrite as method and quess if null.
	 * @var unknown_type
	 */
	public $contentType = '';
	public $xpath;
	public $uuid = 0;
	public $data = array();
	public $dataNodes = array();
	public $events = array();
	public $eventsNodes = array();
	public $eventsGlobal = array();
	/**
	 * @TODO iframes support http://code.google.com/p/phpquery/issues/detail?id=28
	 * @var unknown_type
	 */
	public $frames = array();
	/**
	 * Document root, by default equals to document itself.
	 * Used by documentFragments.
	 *
	 * @var DOMNode
	 */
	public $root;
	public $isDocumentFragment;
	public $isXML = false;
	public $isXHTML = false;
	public $isHTML = false;
	public $charset;
	public function __construct($markup = null, $contentType = null, $newDocumentID = null)
	{
		if (isset($markup))
			$this->load($markup, $contentType, $newDocumentID);
		$this->id = $newDocumentID
			? $newDocumentID
			: md5(microtime());
	}
	public function load($markup, $contentType = null, $newDocumentID = null)
	{
		//		phpQuery::$documents[$id] = $this;
		$this->contentType = strtolower($contentType);
		if ($markup instanceof DOMDOCUMENT) {
			$this->document = $markup;
			$this->root = $this->document;
			$this->charset = $this->document->encoding;
			// TODO isDocumentFragment
			$loaded = true;
		} else {
			$loaded = $this->loadMarkup($markup);
		}
		if ($loaded) {
			//			$this->document->formatOutput = true;
			$this->document->preserveWhiteSpace = true;
			$this->xpath = new DOMXPath($this->document);
			$this->afterMarkupLoad();
			return true;
			// remember last loaded document
			//			return phpQuery::selectDocument($id);
		}
		return false;
	}
	protected function afterMarkupLoad()
	{
		if ($this->isXHTML) {
			$this->xpath->registerNamespace("html", "http://www.w3.org/1999/xhtml");
		}
	}
	protected function loadMarkup($markup)
	{
		$loaded = false;
		if ($this->contentType) {
			self::debug("Load markup for content type {$this->contentType}");
			// content determined by contentType
			list($contentType, $charset) = $this->contentTypeToArray($this->contentType);
			switch ($contentType) {
				case 'text/html':
					phpQuery::debug("Loading HTML, content type '{$this->contentType}'");
					$loaded = $this->loadMarkupHTML($markup, $charset);
					break;
				case 'text/xml':
				case 'application/xhtml+xml':
					phpQuery::debug("Loading XML, content type '{$this->contentType}'");
					$loaded = $this->loadMarkupXML($markup, $charset);
					break;
				default:
					// for feeds or anything that sometimes doesn't use text/xml
					if (strpos('xml', $this->contentType) !== false) {
						phpQuery::debug("Loading XML, content type '{$this->contentType}'");
						$loaded = $this->loadMarkupXML($markup, $charset);
					} else
						phpQuery::debug("Could not determine document type from content type '{$this->contentType}'");
			}
		} else {
			// content type autodetection
			if ($this->isXML($markup)) {
				phpQuery::debug("Loading XML, isXML() == true");
				$loaded = $this->loadMarkupXML($markup);
				if (!$loaded && $this->isXHTML) {
					phpQuery::debug('Loading as XML failed, trying to load as HTML, isXHTML == true');
					$loaded = $this->loadMarkupHTML($markup);
				}
			} else {
				phpQuery::debug("Loading HTML, isXML() == false");
				$loaded = $this->loadMarkupHTML($markup);
			}
		}
		return $loaded;
	}
	protected function loadMarkupReset()
	{
		$this->isXML = $this->isXHTML = $this->isHTML = false;
	}
	protected function documentCreate($charset, $version = '1.0')
	{
		if (!$version)
			$version = '1.0';
		$this->document = new DOMDocument($version, $charset);
		$this->charset = $this->document->encoding;
		//		$this->document->encoding = $charset;
		$this->document->formatOutput = true;
		$this->document->preserveWhiteSpace = true;
	}
	protected function loadMarkupHTML($markup, $requestedCharset = null)
	{
		if (phpQuery::$debug)
			phpQuery::debug('Full markup load (HTML): ' . substr($markup, 0, 250));
		$this->loadMarkupReset();
		$this->isHTML = true;
		if (!isset($this->isDocumentFragment))
			$this->isDocumentFragment = self::isDocumentFragmentHTML($markup);
		$charset = null;
		$documentCharset = $this->charsetFromHTML($markup);
		$addDocumentCharset = false;
		if ($documentCharset) {
			$charset = $documentCharset;
			$markup = $this->charsetFixHTML($markup);
		} else if ($requestedCharset) {
			$charset = $requestedCharset;
		}
		if (!$charset)
			$charset = phpQuery::$defaultCharset;
		// HTTP 1.1 says that the default charset is ISO-8859-1
		// @see http://www.w3.org/International/O-HTTP-charset
		if (!$documentCharset) {
			$documentCharset = 'ISO-8859-1';
			$addDocumentCharset = true;
		}
		// Should be careful here, still need 'magic encoding detection' since lots of pages have other 'default encoding'
		// Worse, some pages can have mixed encodings... we'll try not to worry about that
		$requestedCharset = $requestedCharset ? strtoupper($requestedCharset) : "";
		$documentCharset = strtoupper($documentCharset);
		phpQuery::debug("DOC: $documentCharset REQ: $requestedCharset");
		if ($requestedCharset && $documentCharset && $requestedCharset !== $documentCharset) {
			phpQuery::debug("CHARSET CONVERT");
			// Document Encoding Conversion
			// http://code.google.com/p/phpquery/issues/detail?id=86
			if (function_exists('mb_detect_encoding')) {
				$possibleCharsets = array($documentCharset, $requestedCharset, 'AUTO');
				$docEncoding = mb_detect_encoding($markup, implode(', ', $possibleCharsets));
				if (!$docEncoding)
					$docEncoding = $documentCharset; // ok trust the document
				phpQuery::debug("DETECTED '$docEncoding'");
				// Detected does not match what document says...
				if ($docEncoding !== $documentCharset) {
					// Tricky..
				}
				if ($docEncoding !== $requestedCharset) {
					phpQuery::debug("CONVERT $docEncoding => $requestedCharset");
					$markup = mb_convert_encoding($markup, $requestedCharset, $docEncoding);
					$markup = $this->charsetAppendToHTML($markup, $requestedCharset);
					$charset = $requestedCharset;
				}
			} else {
				phpQuery::debug("TODO: charset conversion without mbstring...");
			}
		}
		$return = false;
		if ($this->isDocumentFragment) {
			phpQuery::debug("Full markup load (HTML), DocumentFragment detected, using charset '$charset'");
			$return = $this->documentFragmentLoadMarkup($this, $charset, $markup);
		} else {
			if ($addDocumentCharset) {
				phpQuery::debug("Full markup load (HTML), appending charset: '$charset'");
				$markup = $this->charsetAppendToHTML($markup, $charset);
			}
			phpQuery::debug("Full markup load (HTML), documentCreate('$charset')");
			$this->documentCreate($charset);
			$return = phpQuery::$debug === 2
				? $this->document->loadHTML($markup)
				: @$this->document->loadHTML($markup);
			if ($return)
				$this->root = $this->document;
		}
		if ($return && !$this->contentType)
			$this->contentType = 'text/html';
		return $return;
	}
	protected function loadMarkupXML($markup, $requestedCharset = null)
	{
		if (phpQuery::$debug)
			phpQuery::debug('Full markup load (XML): ' . substr($markup, 0, 250));
		$this->loadMarkupReset();
		$this->isXML = true;
		// check agains XHTML in contentType or markup
		$isContentTypeXHTML = $this->isXHTML();
		$isMarkupXHTML = $this->isXHTML($markup);
		if ($isContentTypeXHTML || $isMarkupXHTML) {
			self::debug('Full markup load (XML), XHTML detected');
			$this->isXHTML = true;
		}
		// determine document fragment
		if (!isset($this->isDocumentFragment))
			$this->isDocumentFragment = $this->isXHTML
				? self::isDocumentFragmentXHTML($markup)
				: self::isDocumentFragmentXML($markup);
		// this charset will be used
		$charset = null;
		// charset from XML declaration @var string
		$documentCharset = $this->charsetFromXML($markup);
		if (!$documentCharset) {
			if ($this->isXHTML) {
				// this is XHTML, try to get charset from content-type meta header
				$documentCharset = $this->charsetFromHTML($markup);
				if ($documentCharset) {
					phpQuery::debug("Full markup load (XML), appending XHTML charset '$documentCharset'");
					$this->charsetAppendToXML($markup, $documentCharset);
					$charset = $documentCharset;
				}
			}
			if (!$documentCharset) {
				// if still no document charset...
				$charset = $requestedCharset;
			}
		} else if ($requestedCharset) {
			$charset = $requestedCharset;
		}
		if (!$charset) {
			$charset = phpQuery::$defaultCharset;
		}
		if ($requestedCharset && $documentCharset && $requestedCharset != $documentCharset) {
			// TODO place for charset conversion
			//			$charset = $requestedCharset;
		}
		$return = false;
		if ($this->isDocumentFragment) {
			phpQuery::debug("Full markup load (XML), DocumentFragment detected, using charset '$charset'");
			$return = $this->documentFragmentLoadMarkup($this, $charset, $markup);
		} else {
			// FIXME ???
			if ($isContentTypeXHTML && !$isMarkupXHTML)
				if (!$documentCharset) {
					phpQuery::debug("Full markup load (XML), appending charset '$charset'");
					$markup = $this->charsetAppendToXML($markup, $charset);
				}
			// see http://pl2.php.net/manual/en/book.dom.php#78929
			// LIBXML_DTDLOAD (>= PHP 5.1)
			// does XML ctalogues works with LIBXML_NONET
			//		$this->document->resolveExternals = true;
			// TODO test LIBXML_COMPACT for performance improvement
			// create document
			$this->documentCreate($charset);
			if (phpversion() < 5.1) {
				$this->document->resolveExternals = true;
				$return = phpQuery::$debug === 2
					? $this->document->loadXML($markup)
					: @$this->document->loadXML($markup);
			} else {
				/** @link http://pl2.php.net/manual/en/libxml.constants.php */
				$libxmlStatic = phpQuery::$debug === 2
					? LIBXML_DTDLOAD | LIBXML_DTDATTR | LIBXML_NONET
					: LIBXML_DTDLOAD | LIBXML_DTDATTR | LIBXML_NONET | LIBXML_NOWARNING | LIBXML_NOERROR;
				$return = $this->document->loadXML($markup, $libxmlStatic);
				// 				if (! $return)
				// 					$return = $this->document->loadHTML($markup);
			}
			if ($return)
				$this->root = $this->document;
		}
		if ($return) {
			if (!$this->contentType) {
				if ($this->isXHTML)
					$this->contentType = 'application/xhtml+xml';
				else
					$this->contentType = 'text/xml';
			}
			return $return;
		} else {
			throw new Exception("Error loading XML markup");
		}
	}
	protected function isXHTML($markup = null)
	{
		if (!isset($markup)) {
			return strpos($this->contentType, 'xhtml') !== false;
		}
		// XXX ok ?
		return strpos($markup, "<!DOCTYPE html") !== false;
		//		return stripos($doctype, 'xhtml') !== false;
		//		$doctype = isset($dom->doctype) && is_object($dom->doctype)
		//			? $dom->doctype->publicId
		//			: self::$defaultDoctype;
	}
	protected function isXML($markup)
	{
		//		return strpos($markup, '<?xml') !== false && stripos($markup, 'xhtml') === false;
		return strpos(substr($markup, 0, 100), '<' . '?xml') !== false;
	}
	protected function contentTypeToArray($contentType)
	{
		$matches = explode(';', trim(strtolower($contentType)));
		if (isset($matches[1])) {
			$matches[1] = explode('=', $matches[1]);
			// strip 'charset='
			$matches[1] = isset($matches[1][1]) && trim($matches[1][1])
				? $matches[1][1]
				: $matches[1][0];
		} else
			$matches[1] = null;
		return $matches;
	}
	/**
	 *
	 * @param $markup
	 * @return array contentType, charset
	 */
	protected function contentTypeFromHTML($markup)
	{
		$matches = array();
		// find meta tag
		preg_match(
			'@<meta[^>]+http-equiv\\s*=\\s*(["|\'])Content-Type\\1([^>]+?)>@i',
			$markup,
			$matches
		);
		if (!isset($matches[0]))
			return array(null, null);
		// get attr 'content'
		preg_match('@content\\s*=\\s*(["|\'])(.+?)\\1@', $matches[0], $matches);
		if (!isset($matches[0]))
			return array(null, null);
		return $this->contentTypeToArray($matches[2]);
	}
	protected function charsetFromHTML($markup)
	{
		$contentType = $this->contentTypeFromHTML($markup);
		return $contentType[1];
	}
	protected function charsetFromXML($markup)
	{
		$matches;
		// find declaration
		preg_match(
			'@<' . '?xml[^>]+encoding\\s*=\\s*(["|\'])(.*?)\\1@i',
			$markup,
			$matches
		);
		return isset($matches[2])
			? strtolower($matches[2])
			: null;
	}
	/**
	 * Repositions meta[type=charset] at the start of head. Bypasses DOMDocument bug.
	 *
	 * @link http://code.google.com/p/phpquery/issues/detail?id=80
	 * @param $html
	 */
	protected function charsetFixHTML($markup)
	{
		$matches = array();
		// find meta tag
		preg_match(
			'@\s*<meta[^>]+http-equiv\\s*=\\s*(["|\'])Content-Type\\1([^>]+?)>@i',
			$markup,
			$matches,
			PREG_OFFSET_CAPTURE
		);
		if (!isset($matches[0]))
			return;
		$metaContentType = $matches[0][0];
		$markup = substr($markup, 0, $matches[0][1])
			. substr($markup, $matches[0][1] + strlen($metaContentType));
		$headStart = stripos($markup, '<head>');
		$markup = substr($markup, 0, $headStart + 6) . $metaContentType
			. substr($markup, $headStart + 6);
		return $markup;
	}
	protected function charsetAppendToHTML($html, $charset, $xhtml = false)
	{
		// remove existing meta[type=content-type]
		$html = preg_replace('@\s*<meta[^>]+http-equiv\\s*=\\s*(["|\'])Content-Type\\1([^>]+?)>@i', '', $html);
		$meta = '<meta http-equiv="Content-Type" content="text/html;charset='
			. $charset . '" '
			. ($xhtml ? '/' : '')
			. '>';
		if (strpos($html, '<head') === false) {
			if (strpos($html, '<html') === false) {
				return $meta . $html;
			} else {
				return preg_replace(
					'@<html(.*?)(?(?<!\?)>)@s',
					"<html\\1><head>{$meta}</head>",
					$html
				);
			}
		} else {
			return preg_replace(
				'@<head(.*?)(?(?<!\?)>)@s',
				'<head\\1>' . $meta,
				$html
			);
		}
	}
	protected function charsetAppendToXML($markup, $charset)
	{
		$declaration = '<' . '?xml version="1.0" encoding="' . $charset . '"?' . '>';
		return $declaration . $markup;
	}
	public static function isDocumentFragmentHTML($markup)
	{
		return stripos($markup, '<html') === false && stripos($markup, '<!doctype') === false;
	}
	public static function isDocumentFragmentXML($markup)
	{
		return stripos($markup, '<' . '?xml') === false;
	}
	public static function isDocumentFragmentXHTML($markup)
	{
		return self::isDocumentFragmentHTML($markup);
	}
	public function importAttr($value)
	{
		// TODO
	}
	/**
	 *
	 * @param $source
	 * @param $target
	 * @param $sourceCharset
	 * @return array Array of imported nodes.
	 */
	public function import($source, $sourceCharset = null)
	{
		// TODO charset conversions
		$return = array();
		if ($source instanceof DOMNODE && !($source instanceof DOMNODELIST))
			$source = array($source);
		//		if (is_array($source)) {
		//			foreach($source as $node) {
		//				if (is_string($node)) {
		//					// string markup
		//					$fake = $this->documentFragmentCreate($node, $sourceCharset);
		//					if ($fake === false)
		//						throw new Exception("Error loading documentFragment markup");
		//					else
		//						$return = array_merge($return,
		//							$this->import($fake->root->childNodes)
		//						);
		//				} else {
		//					$return[] = $this->document->importNode($node, true);
		//				}
		//			}
		//			return $return;
		//		} else {
		//			// string markup
		//			$fake = $this->documentFragmentCreate($source, $sourceCharset);
		//			if ($fake === false)
		//				throw new Exception("Error loading documentFragment markup");
		//			else
		//				return $this->import($fake->root->childNodes);
		//		}
		if (is_array($source) || $source instanceof DOMNODELIST) {
			// dom nodes
			self::debug('Importing nodes to document');
			foreach ($source as $node)
				$return[] = $this->document->importNode($node, true);
		} else {
			// string markup
			$fake = $this->documentFragmentCreate($source, $sourceCharset);
			if ($fake === false)
				throw new Exception("Error loading documentFragment markup");
			else
				return $this->import($fake->root->childNodes);
		}
		return $return;
	}
	/**
	 * Creates new document fragment.
	 *
	 * @param $source
	 * @return DOMDocumentWrapper
	 */
	protected function documentFragmentCreate($source, $charset = null)
	{
		$fake = new DOMDocumentWrapper();
		$fake->contentType = $this->contentType;
		$fake->isXML = $this->isXML;
		$fake->isHTML = $this->isHTML;
		$fake->isXHTML = $this->isXHTML;
		$fake->root = $fake->document;
		if (!$charset)
			$charset = $this->charset;
		//	$fake->documentCreate($this->charset);
		if ($source instanceof DOMNODE && !($source instanceof DOMNODELIST))
			$source = array($source);
		if (is_array($source) || $source instanceof DOMNODELIST) {
			// dom nodes
			// load fake document
			if (!$this->documentFragmentLoadMarkup($fake, $charset))
				return false;
			$nodes = $fake->import($source);
			foreach ($nodes as $node)
				$fake->root->appendChild($node);
		} else {
			// string markup
			$this->documentFragmentLoadMarkup($fake, $charset, $source);
		}
		return $fake;
	}
	/**
	 *
	 * @param $document DOMDocumentWrapper
	 * @param $markup
	 * @return $document
	 */
	private function documentFragmentLoadMarkup($fragment, $charset, $markup = null)
	{
		// TODO error handling
		// TODO copy doctype
		// tempolary turn off
		$fragment->isDocumentFragment = false;
		if ($fragment->isXML) {
			if ($fragment->isXHTML) {
				// add FAKE element to set default namespace
				$fragment->loadMarkupXML('<?xml version="1.0" encoding="' . $charset . '"?>'
					. '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" '
					. '"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">'
					. '<fake xmlns="http://www.w3.org/1999/xhtml">' . $markup . '</fake>');
				$fragment->root = $fragment->document->firstChild->nextSibling;
			} else {
				$fragment->loadMarkupXML('<?xml version="1.0" encoding="' . $charset . '"?><fake>' . $markup . '</fake>');
				$fragment->root = $fragment->document->firstChild;
			}
		} else {
			$markup2 = phpQuery::$defaultDoctype . '<html><head><meta http-equiv="Content-Type" content="text/html;charset='
				. $charset . '"></head>';
			if ($markup == null) {
				$markup = "";
			}
			$noBody = strpos($markup, '<body') === false;
			if ($noBody)
				$markup2 .= '<body>';
			$markup2 .= $markup;
			if ($noBody)
				$markup2 .= '</body>';
			$markup2 .= '</html>';
			$fragment->loadMarkupHTML($markup2);
			// TODO resolv body tag merging issue
			$fragment->root = $noBody
				? $fragment->document->firstChild->nextSibling->firstChild->nextSibling
				: $fragment->document->firstChild->nextSibling->firstChild->nextSibling;
		}
		if (!$fragment->root)
			return false;
		$fragment->isDocumentFragment = true;
		return true;
	}
	protected function documentFragmentToMarkup($fragment)
	{
		phpQuery::debug('documentFragmentToMarkup');
		$tmp = $fragment->isDocumentFragment;
		$fragment->isDocumentFragment = false;
		$markup = $fragment->markup();
		if ($fragment->isXML) {
			$markup = substr($markup, 0, strrpos($markup, '</fake>'));
			if ($fragment->isXHTML) {
				$markup = substr($markup, strpos($markup, '<fake') + 43);
			} else {
				$markup = substr($markup, strpos($markup, '<fake>') + 6);
			}
		} else {
			$markup = substr($markup, strpos($markup, '<body>') + 6);
			$markup = substr($markup, 0, strrpos($markup, '</body>'));
		}
		$fragment->isDocumentFragment = $tmp;
		if (phpQuery::$debug)
			phpQuery::debug('documentFragmentToMarkup: ' . substr($markup, 0, 150));
		return $markup;
	}
	/**
	 * Return document markup, starting with optional $nodes as root.
	 *
	 * @param $nodes	DOMNode|DOMNodeList
	 * @return string
	 */
	public function markup($nodes = null, $innerMarkup = false)
	{
		if (isset($nodes) && count($nodes) == 1 && $nodes[0] instanceof DOMDOCUMENT)
			$nodes = null;
		if (isset($nodes)) {
			$markup = '';
			if (!is_array($nodes) && !($nodes instanceof DOMNODELIST))
				$nodes = array($nodes);
			if ($this->isDocumentFragment && !$innerMarkup)
				foreach ($nodes as $i => $node)
					if ($node->isSameNode($this->root)) {
						//	var_dump($node);
						$nodes = array_slice($nodes, 0, $i)
							+ phpQuery::DOMNodeListToArray($node->childNodes)
							+ array_slice($nodes, $i + 1);
					}
			if ($this->isXML && !$innerMarkup) {
				self::debug("Getting outerXML with charset '{$this->charset}'");
				// we need outerXML, so we can benefit from
				// $node param support in saveXML()
				foreach ($nodes as $node)
					$markup .= $this->document->saveXML($node);
			} else {
				$loop = array();
				if ($innerMarkup)
					foreach ($nodes as $node) {
						if ($node->childNodes)
							foreach ($node->childNodes as $child)
								$loop[] = $child;
						else
							$loop[] = $node;
					}
				else
					$loop = $nodes;
				self::debug("Getting markup, moving selected nodes (" . count($loop) . ") to new DocumentFragment");
				$fake = $this->documentFragmentCreate($loop);
				$markup = $this->documentFragmentToMarkup($fake);
			}
			if ($this->isXHTML) {
				self::debug("Fixing XHTML");
				$markup = self::markupFixXHTML($markup);
			}
			self::debug("Markup: " . substr($markup, 0, 250));
			return $markup;
		} else {
			if ($this->isDocumentFragment) {
				// documentFragment, html only...
				self::debug("Getting markup, DocumentFragment detected");
				//				return $this->markup(
				////					$this->document->getElementsByTagName('body')->item(0)
				//					$this->document->root, true
				//				);
				$markup = $this->documentFragmentToMarkup($this);
				// no need for markupFixXHTML, as it's done thought markup($nodes) method
				return $markup;
			} else {
				self::debug("Getting markup (" . ($this->isXML ? 'XML' : 'HTML') . "), final with charset '{$this->charset}'");
				$markup = $this->isXML
					? $this->document->saveXML()
					: $this->document->saveHTML();
				if ($this->isXHTML) {
					self::debug("Fixing XHTML");
					$markup = self::markupFixXHTML($markup);
				}
				self::debug("Markup: " . substr($markup, 0, 250));
				return $markup;
			}
		}
	}
	protected static function markupFixXHTML($markup)
	{
		$markup = self::expandEmptyTag('script', $markup);
		$markup = self::expandEmptyTag('select', $markup);
		$markup = self::expandEmptyTag('textarea', $markup);
		return $markup;
	}
	public static function debug($text)
	{
		phpQuery::debug($text);
	}
	/**
	 * expandEmptyTag
	 *
	 * @param $tag
	 * @param $xml
	 * @return unknown_type
	 * @author mjaque at ilkebenson dot com
	 * @link http://php.net/manual/en/domdocument.savehtml.php#81256
	 */
	public static function expandEmptyTag($tag, $xml)
	{
		$indice = 0;
		while ($indice < strlen($xml)) {
			$pos = strpos($xml, "<$tag ", $indice);
			if ($pos) {
				$posCierre = strpos($xml, ">", $pos);
				if ($xml[$posCierre - 1] == "/") {
					$xml = substr_replace($xml, "></$tag>", $posCierre - 1, 2);
				}
				$indice = $posCierre;
			} else break;
		}
		return $xml;
	}
}

/**
 * Event handling class.
 *
 * @author Tobiasz Cudnik
 * @package phpQuery
 * @static
 */
abstract class phpQueryEvents
{
	/**
	 * Trigger a type of event on every matched element.
	 *
	 * @param DOMNode|phpQueryObject|string $document
	 * @param unknown_type $type
	 * @param unknown_type $data
	 *
	 * @TODO exclusive events (with !)
	 * @TODO global events (test)
	 * @TODO support more than event in $type (space-separated)
	 */
	public static function trigger($document, $type, $data = array(), $node = null)
	{
		// trigger: function(type, data, elem, donative, extra) {
		$documentID = phpQuery::getDocumentID($document);
		$namespace = null;
		if (strpos($type, '.') !== false)
			list($name, $namespace) = explode('.', $type);
		else
			$name = $type;
		if (!$node) {
			if (self::issetGlobal($documentID, $type)) {
				$pq = phpQuery::getDocument($documentID);
				// TODO check add($pq->document)
				$pq->find('*')->add($pq->document)
					->trigger($type, $data);
			}
		} else {
			if (isset($data[0]) && $data[0] instanceof DOMEvent) {
				$event = $data[0];
				$event->relatedTarget = $event->target;
				$event->target = $node;
				$data = array_slice($data, 1);
			} else {
				$event = new DOMEvent(array(
					'type' => $type,
					'target' => $node,
					'timeStamp' => time(),
				));
			}
			$i = 0;
			while ($node) {
				// TODO whois
				phpQuery::debug("Triggering " . ($i ? "bubbled " : '') . "event '{$type}' on "
					. "node \n"); //.phpQueryObject::whois($node)."\n");
				$event->currentTarget = $node;
				$eventNode = self::getNode($documentID, $node);
				if (isset($eventNode->eventHandlers)) {
					foreach ($eventNode->eventHandlers as $eventType => $handlers) {
						$eventNamespace = null;
						if (strpos($type, '.') !== false)
							list($eventName, $eventNamespace) = explode('.', $eventType);
						else
							$eventName = $eventType;
						if ($name != $eventName)
							continue;
						if ($namespace && $eventNamespace && $namespace != $eventNamespace)
							continue;
						foreach ($handlers as $handler) {
							phpQuery::debug("Calling event handler\n");
							$event->data = $handler['data']
								? $handler['data']
								: null;
							$params = array_merge(array($event), $data);
							$return = phpQuery::callbackRun($handler['callback'], $params);
							if ($return === false) {
								$event->bubbles = false;
							}
						}
					}
				}
				// to bubble or not to bubble...
				if (!$event->bubbles)
					break;
				$node = $node->parentNode;
				$i++;
			}
		}
	}
	/**
	 * Binds a handler to one or more events (like click) for each matched element.
	 * Can also bind custom events.
	 *
	 * @param DOMNode|phpQueryObject|string $document
	 * @param unknown_type $type
	 * @param unknown_type $data Optional
	 * @param unknown_type $callback
	 *
	 * @TODO support '!' (exclusive) events
	 * @TODO support more than event in $type (space-separated)
	 * @TODO support binding to global events
	 */
	public static function add($document, $node, $type, $data, $callback = null)
	{
		phpQuery::debug("Binding '$type' event");
		$documentID = phpQuery::getDocumentID($document);
		//		if (is_null($callback) && is_callable($data)) {
		//			$callback = $data;
		//			$data = null;
		//		}
		$eventNode = self::getNode($documentID, $node);
		if (!$eventNode)
			$eventNode = self::setNode($documentID, $node);
		if (!isset($eventNode->eventHandlers[$type]))
			$eventNode->eventHandlers[$type] = array();
		$eventNode->eventHandlers[$type][] = array(
			'callback' => $callback,
			'data' => $data,
		);
	}
	/**
	 * Enter description here...
	 *
	 * @param DOMNode|phpQueryObject|string $document
	 * @param unknown_type $type
	 * @param unknown_type $callback
	 *
	 * @TODO namespace events
	 * @TODO support more than event in $type (space-separated)
	 */
	public static function remove($document, $node, $type = null, $callback = null)
	{
		$documentID = phpQuery::getDocumentID($document);
		$eventNode = self::getNode($documentID, $node);
		if (is_object($eventNode) && isset($eventNode->eventHandlers[$type])) {
			if ($callback) {
				foreach ($eventNode->eventHandlers[$type] as $k => $handler)
					if ($handler['callback'] == $callback)
						unset($eventNode->eventHandlers[$type][$k]);
			} else {
				unset($eventNode->eventHandlers[$type]);
			}
		}
	}
	protected static function getNode($documentID, $node)
	{
		foreach (phpQuery::$documents[$documentID]->eventsNodes as $eventNode) {
			if ($node->isSameNode($eventNode))
				return $eventNode;
		}
	}
	protected static function setNode($documentID, $node)
	{
		phpQuery::$documents[$documentID]->eventsNodes[] = $node;
		return phpQuery::$documents[$documentID]->eventsNodes[count(phpQuery::$documents[$documentID]->eventsNodes) - 1];
	}
	protected static function issetGlobal($documentID, $type)
	{
		return isset(phpQuery::$documents[$documentID])
			? in_array($type, phpQuery::$documents[$documentID]->eventsGlobal)
			: false;
	}
}


interface ICallbackNamed
{
	function hasName();
	function getName();
}
/**
 * Callback class introduces currying-like pattern.
 *
 * Example:
 * function foo($param1, $param2, $param3) {
 *   var_dump($param1, $param2, $param3);
 * }
 * $fooCurried = new Callback('foo',
 *   'param1 is now statically set',
 *   new CallbackParam, new CallbackParam
 * );
 * phpQuery::callbackRun($fooCurried,
 * 	array('param2 value', 'param3 value'
 * );
 *
 * Callback class is supported in all phpQuery methods which accepts callbacks.
 *
 * @link http://code.google.com/p/phpquery/wiki/Callbacks#Param_Structures
 * @author Tobiasz Cudnik <tobiasz.cudnik/gmail.com>
 *
 * @TODO??? return fake forwarding function created via create_function
 * @TODO honor paramStructure
 */
class Callback
implements ICallbackNamed
{
	public $callback = null;
	public $params = null;
	protected $name;
	public function __construct(
		$callback,
		$param1 = null,
		$param2 = null,
		$param3 = null
	) {
		$params = func_get_args();
		$params = array_slice($params, 1);
		if ($callback instanceof Callback) {
			// TODO implement recurention
		} else {
			$this->callback = $callback;
			$this->params = $params;
		}
	}
	public function getName()
	{
		return 'Callback: ' . $this->name;
	}
	public function hasName()
	{
		return isset($this->name) && $this->name;
	}
	public function setName($name)
	{
		$this->name = $name;
		return $this;
	}
	// TODO test me
	//	public function addParams() {
	//		$params = func_get_args();
	//		return new Callback($this->callback, $this->params+$params);
	//	}
}
/**
 * Shorthand for new Callback(create_function(...), ...);
 *
 * @author Tobiasz Cudnik <tobiasz.cudnik/gmail.com>
 */
class CallbackBody extends Callback
{
	public function __construct(
		$paramList,
		$code,
		$param1 = null,
		$param2 = null,
		$param3 = null
	) {
		$params = func_get_args();
		$params = array_slice($params, 2);
		$this->callback = create_function($paramList, $code);
		$this->params = $params;
	}
}
/**
 * Callback type which on execution returns reference passed during creation.
 *
 * @author Tobiasz Cudnik <tobiasz.cudnik/gmail.com>
 */
class CallbackReturnReference extends Callback
implements ICallbackNamed
{
	protected $reference;
	public function __construct(&$reference, $name = null)
	{
		$this->reference = &$reference;
		$this->callback = array($this, 'callback');
	}
	public function callback()
	{
		return $this->reference;
	}
	public function getName()
	{
		return 'Callback: ' . $this->name;
	}
	public function hasName()
	{
		return isset($this->name) && $this->name;
	}
}
/**
 * Callback type which on execution returns value passed during creation.
 *
 * @author Tobiasz Cudnik <tobiasz.cudnik/gmail.com>
 */
class CallbackReturnValue extends Callback
implements ICallbackNamed
{
	protected $value;
	protected $name;
	public function __construct($value, $name = null)
	{
		$this->value = &$value;
		$this->name = $name;
		$this->callback = array($this, 'callback');
	}
	public function callback()
	{
		return $this->value;
	}
	public function __toString()
	{
		return $this->getName();
	}
	public function getName()
	{
		return 'Callback: ' . $this->name;
	}
	public function hasName()
	{
		return isset($this->name) && $this->name;
	}
}
/**
 * CallbackParameterToReference can be used when we don't really want a callback,
 * only parameter passed to it. CallbackParameterToReference takes first
 * parameter's value and passes it to reference.
 *
 * @author Tobiasz Cudnik <tobiasz.cudnik/gmail.com>
 */
class CallbackParameterToReference extends Callback
{
	/**
	 * @param $reference
	 * @TODO implement $paramIndex;
	 * param index choose which callback param will be passed to reference
	 */
	public function __construct(&$reference)
	{
		$this->callback = &$reference;
	}
}
//class CallbackReference extends Callback {
//	/**
//	 *
//	 * @param $reference
//	 * @param $paramIndex
//	 * @todo implement $paramIndex; param index choose which callback param will be passed to reference
//	 */
//	public function __construct(&$reference, $name = null){
//		$this->callback =& $reference;
//	}
//}
class CallbackParam
{
}

/**
 * Class representing phpQuery objects.
 *
 * @author Tobiasz Cudnik <tobiasz.cudnik/gmail.com>
 * @package phpQuery
 * @method phpQueryObject clone() clone()
 * @method phpQueryObject empty() empty()
 * @method phpQueryObject next() next($selector = null)
 * @method phpQueryObject prev() prev($selector = null)
 * @property Int $length
 */
class phpQueryObject
implements Iterator, Countable, ArrayAccess
{
	public $documentID = null;
	/**
	 * DOMDocument class.
	 *
	 * @var DOMDocument
	 */
	public $document = null;
	public $charset = null;
	/**
	 *
	 * @var DOMDocumentWrapper
	 */
	public $documentWrapper = null;
	/**
	 * XPath interface.
	 *
	 * @var DOMXPath
	 */
	public $xpath = null;
	/**
	 * Stack of selected elements.
	 * @TODO refactor to ->nodes
	 * @var array
	 */
	public $elements = array();
	/**
	 * @access private
	 */
	protected $elementsBackup = array();
	/**
	 * @access private
	 */
	protected $previous = null;
	/**
	 * @access private
	 * @TODO deprecate
	 */
	protected $root = array();
	/**
	 * Indicated if doument is just a fragment (no <html> tag).
	 *
	 * Every document is realy a full document, so even documentFragments can
	 * be queried against <html>, but getDocument(id)->htmlOuter() will return
	 * only contents of <body>.
	 *
	 * @var bool
	 */
	public $documentFragment = true;
	/**
	 * Iterator interface helper
	 * @access private
	 */
	protected $elementsInterator = array();
	/**
	 * Iterator interface helper
	 * @access private
	 */
	protected $valid = false;
	/**
	 * Iterator interface helper
	 * @access private
	 */
	protected $current = null;
	/**
	 * Enter description here...
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function __construct($documentID)
	{
		//		if ($documentID instanceof self)
		//			var_dump($documentID->getDocumentID());
		$id = $documentID instanceof self
			? $documentID->getDocumentID()
			: $documentID;
		//		var_dump($id);
		if (!isset(phpQuery::$documents[$id])) {
			//			var_dump(phpQuery::$documents);
			throw new Exception("Document with ID '{$id}' isn't loaded. Use phpQuery::newDocument(\$html) or phpQuery::newDocumentFile(\$file) first.");
		}
		$this->documentID = $id;
		$this->documentWrapper = &phpQuery::$documents[$id];
		$this->document = &$this->documentWrapper->document;
		$this->xpath = &$this->documentWrapper->xpath;
		$this->charset = &$this->documentWrapper->charset;
		$this->documentFragment = &$this->documentWrapper->isDocumentFragment;
		// TODO check $this->DOM->documentElement;
		//		$this->root = $this->document->documentElement;
		$this->root = &$this->documentWrapper->root;
		//		$this->toRoot();
		$this->elements = array($this->root);
	}
	/**
	 *
	 * @access private
	 * @param $attr
	 * @return unknown_type
	 */
	public function __get($attr)
	{
		switch ($attr) {
				// FIXME doesnt work at all ?
			case 'length':
				return $this->size();
				break;
			default:
				return $this->$attr;
		}
	}
	/**
	 * Saves actual object to $var by reference.
	 * Useful when need to break chain.
	 * @param phpQueryObject $var
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function toReference(&$var)
	{
		return $var = $this;
	}
	public function documentFragment($state = null)
	{
		if ($state) {
			phpQuery::$documents[$this->getDocumentID()]['documentFragment'] = $state;
			return $this;
		}
		return $this->documentFragment;
	}
	/**
	 * @access private
	 * @TODO documentWrapper
	 */
	protected function isRoot($node)
	{
		//		return $node instanceof DOMDOCUMENT || $node->tagName == 'html';
		return $node instanceof DOMDOCUMENT
			|| ($node instanceof DOMELEMENT && $node->tagName == 'html')
			|| $this->root->isSameNode($node);
	}
	/**
	 * @access private
	 */
	protected function stackIsRoot()
	{
		return $this->size() == 1 && $this->isRoot($this->elements[0]);
	}
	/**
	 * Enter description here...
	 * NON JQUERY METHOD
	 *
	 * Watch out, it doesn't creates new instance, can be reverted with end().
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function toRoot()
	{
		$this->elements = array($this->root);
		return $this;
		//		return $this->newInstance(array($this->root));
	}
	/**
	 * Saves object's DocumentID to $var by reference.
	 * <code>
	 * $myDocumentId;
	 * phpQuery::newDocument('<div/>')
	 *     ->getDocumentIDRef($myDocumentId)
	 *     ->find('div')->...
	 * </code>
	 *
	 * @param unknown_type $domId
	 * @see phpQuery::newDocument
	 * @see phpQuery::newDocumentFile
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function getDocumentIDRef(&$documentID)
	{
		$documentID = $this->getDocumentID();
		return $this;
	}
	/**
	 * Returns object with stack set to document root.
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function getDocument()
	{
		return phpQuery::getDocument($this->getDocumentID());
	}
	/**
	 *
	 * @return DOMDocument
	 */
	public function getDOMDocument()
	{
		return $this->document;
	}
	/**
	 * Get object's Document ID.
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function getDocumentID()
	{
		return $this->documentID;
	}
	/**
	 * Unloads whole document from memory.
	 * CAUTION! None further operations will be possible on this document.
	 * All objects refering to it will be useless.
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function unloadDocument()
	{
		phpQuery::unloadDocuments($this->getDocumentID());
	}
	public function isHTML()
	{
		return $this->documentWrapper->isHTML;
	}
	public function isXHTML()
	{
		return $this->documentWrapper->isXHTML;
	}
	public function isXML()
	{
		return $this->documentWrapper->isXML;
	}
	/**
	 * Enter description here...
	 *
	 * @link http://docs.jquery.com/Ajax/serialize
	 * @return string
	 */
	public function serialize()
	{
		return phpQuery::param($this->serializeArray());
	}
	/**
	 * Enter description here...
	 *
	 * @link http://docs.jquery.com/Ajax/serializeArray
	 * @return array
	 */
	public function serializeArray($submit = null)
	{
		$source = $this->filter('form, input, select, textarea')
			->find('input, select, textarea')
			->andSelf()
			->not('form');
		$return = array();
		//		$source->dumpDie();
		foreach ($source as $input) {
			$input = phpQuery::pq($input);
			if ($input->is('[disabled]'))
				continue;
			if (!$input->is('[name]'))
				continue;
			if ($input->is('[type=checkbox]') && !$input->is('[checked]'))
				continue;
			// jquery diff
			if ($submit && $input->is('[type=submit]')) {
				if ($submit instanceof DOMELEMENT && !$input->elements[0]->isSameNode($submit))
					continue;
				else if (is_string($submit) && $input->attr('name') != $submit)
					continue;
			}
			$return[] = array(
				'name' => $input->attr('name'),
				'value' => $input->val(),
			);
		}
		return $return;
	}
	/**
	 * @access private
	 */
	protected function debug($in)
	{
		if (!phpQuery::$debug)
			return;
		print('<pre>');
		print_r($in);
		// file debug
		//		file_put_contents(dirname(__FILE__).'/phpQuery.log', print_r($in, true)."\n", FILE_APPEND);
		// quite handy debug trace
		//		if ( is_array($in))
		//			print_r(array_slice(debug_backtrace(), 3));
		print("</pre>\n");
	}
	/**
	 * @access private
	 */
	protected function isRegexp($pattern)
	{
		return in_array(
			$pattern[mb_strlen($pattern) - 1],
			array('^', '*', '$')
		);
	}
	/**
	 * Determines if $char is really a char.
	 *
	 * @param string $char
	 * @return bool
	 * @todo rewrite me to charcode range ! ;)
	 * @access private
	 */
	protected function isChar($char)
	{
		return extension_loaded('mbstring') && phpQuery::$mbstringSupport
			? mb_eregi('\w', $char)
			: preg_match('@\w@', $char);
	}
	/**
	 * @access private
	 */
	protected function parseSelector($query)
	{
		// clean spaces
		// TODO include this inside parsing ?
		$query = trim(
			preg_replace(
				'@\s+@',
				' ',
				preg_replace('@\s*(>|\\+|~)\s*@', '\\1', $query)
			)
		);
		$queries = array(array());
		if (!$query)
			return $queries;
		$return = &$queries[0];
		$specialChars = array('>', ' ');
		//		$specialCharsMapping = array('/' => '>');
		$specialCharsMapping = array();
		$strlen = mb_strlen($query);
		$classChars = array('.', '-');
		$pseudoChars = array('-');
		$tagChars = array('*', '|', '-');
		// split multibyte string
		// http://code.google.com/p/phpquery/issues/detail?id=76
		$_query = array();
		for ($i = 0; $i < $strlen; $i++)
			$_query[] = mb_substr($query, $i, 1);
		$query = $_query;
		// it works, but i dont like it...
		$i = 0;
		while ($i < $strlen) {
			$c = $query[$i];
			$tmp = '';
			// TAG
			if ($this->isChar($c) || in_array($c, $tagChars)) {
				while (
					isset($query[$i])
					&& ($this->isChar($query[$i]) || in_array($query[$i], $tagChars))
				) {
					$tmp .= $query[$i];
					$i++;
				}
				$return[] = $tmp;
				// IDs
			} else if ($c == '#') {
				$i++;
				while (isset($query[$i]) && ($this->isChar($query[$i]) || $query[$i] == '-')) {
					$tmp .= $query[$i];
					$i++;
				}
				$return[] = '#' . $tmp;
				// SPECIAL CHARS
			} else if (in_array($c, $specialChars)) {
				$return[] = $c;
				$i++;
				// MAPPED SPECIAL MULTICHARS
				//			} else if ( $c.$query[$i+1] == '//') {
				//				$return[] = ' ';
				//				$i = $i+2;
				// MAPPED SPECIAL CHARS
			} else if (isset($specialCharsMapping[$c])) {
				$return[] = $specialCharsMapping[$c];
				$i++;
				// COMMA
			} else if ($c == ',') {
				$queries[] = array();
				$return = &$queries[count($queries) - 1];
				$i++;
				while (isset($query[$i]) && $query[$i] == ' ')
					$i++;
				// CLASSES
			} else if ($c == '.') {
				while (isset($query[$i]) && ($this->isChar($query[$i]) || in_array($query[$i], $classChars))) {
					$tmp .= $query[$i];
					$i++;
				}
				$return[] = $tmp;
				// ~ General Sibling Selector
			} else if ($c == '~') {
				$spaceAllowed = true;
				$tmp .= $query[$i++];
				while (
					isset($query[$i])
					&& ($this->isChar($query[$i])
						|| in_array($query[$i], $classChars)
						|| $query[$i] == '*'
						|| ($query[$i] == ' ' && $spaceAllowed)
					)
				) {
					if ($query[$i] != ' ')
						$spaceAllowed = false;
					$tmp .= $query[$i];
					$i++;
				}
				$return[] = $tmp;
				// + Adjacent sibling selectors
			} else if ($c == '+') {
				$spaceAllowed = true;
				$tmp .= $query[$i++];
				while (
					isset($query[$i])
					&& ($this->isChar($query[$i])
						|| in_array($query[$i], $classChars)
						|| $query[$i] == '*'
						|| ($spaceAllowed && $query[$i] == ' ')
					)
				) {
					if ($query[$i] != ' ')
						$spaceAllowed = false;
					$tmp .= $query[$i];
					$i++;
				}
				$return[] = $tmp;
				// ATTRS
			} else if ($c == '[') {
				$stack = 1;
				$tmp .= $c;
				while (isset($query[++$i])) {
					$tmp .= $query[$i];
					if ($query[$i] == '[') {
						$stack++;
					} else if ($query[$i] == ']') {
						$stack--;
						if (!$stack)
							break;
					}
				}
				$return[] = $tmp;
				$i++;
				// PSEUDO CLASSES
			} else if ($c == ':') {
				$stack = 1;
				$tmp .= $query[$i++];
				while (isset($query[$i]) && ($this->isChar($query[$i]) || in_array($query[$i], $pseudoChars))) {
					$tmp .= $query[$i];
					$i++;
				}
				// with arguments ?
				if (isset($query[$i]) && $query[$i] == '(') {
					$tmp .= $query[$i];
					$stack = 1;
					while (isset($query[++$i])) {
						$tmp .= $query[$i];
						if ($query[$i] == '(') {
							$stack++;
						} else if ($query[$i] == ')') {
							$stack--;
							if (!$stack)
								break;
						}
					}
					$return[] = $tmp;
					$i++;
				} else {
					$return[] = $tmp;
				}
			} else {
				$i++;
			}
		}
		foreach ($queries as $k => $q) {
			if (isset($q[0])) {
				if (isset($q[0][0]) && $q[0][0] == ':')
					array_unshift($queries[$k], '*');
				if ($q[0] != '>')
					array_unshift($queries[$k], ' ');
			}
		}
		return $queries;
	}
	/**
	 * Return matched DOM nodes.
	 *
	 * @param int $index
	 * @return array|DOMElement Single DOMElement or array of DOMElement.
	 */
	public function get($index = null, $callback1 = null, $callback2 = null, $callback3 = null)
	{
		$return = isset($index)
			? (isset($this->elements[$index]) ? $this->elements[$index] : null)
			: $this->elements;
		// pass thou callbacks
		$args = func_get_args();
		$args = array_slice($args, 1);
		foreach ($args as $callback) {
			if (is_array($return))
				foreach ($return as $k => $v)
					$return[$k] = phpQuery::callbackRun($callback, array($v));
			else
				$return = phpQuery::callbackRun($callback, array($return));
		}
		return $return;
	}
	/**
	 * Return matched DOM nodes.
	 * jQuery difference.
	 *
	 * @param int $index
	 * @return array|string Returns string if $index != null
	 * @todo implement callbacks
	 * @todo return only arrays ?
	 * @todo maybe other name...
	 */
	public function getString($index = null, $callback1 = null, $callback2 = null, $callback3 = null)
	{
		if (!is_null($index) && is_int($index))
			$return = $this->eq($index)->text();
		else {
			$return = array();
			for ($i = 0; $i < $this->size(); $i++) {
				$return[] = $this->eq($i)->text();
			}
		}
		// pass thou callbacks
		$args = func_get_args();
		$args = array_slice($args, 1);
		foreach ($args as $callback) {
			$return = phpQuery::callbackRun($callback, array($return));
		}
		return $return;
	}
	/**
	 * Return matched DOM nodes.
	 * jQuery difference.
	 *
	 * @param int $index
	 * @return array|string Returns string if $index != null
	 * @todo implement callbacks
	 * @todo return only arrays ?
	 * @todo maybe other name...
	 */
	public function getStrings($index = null, $callback1 = null, $callback2 = null, $callback3 = null)
	{
		if (!is_null($index) && is_int($index))
			$return = $this->eq($index)->text();
		else {
			$return = array();
			for ($i = 0; $i < $this->size(); $i++) {
				$return[] = $this->eq($i)->text();
			}
			// pass thou callbacks
			$args = func_get_args();
			$args = array_slice($args, 1);
		}
		foreach ($args as $callback) {
			if (is_array($return))
				foreach ($return as $k => $v)
					$return[$k] = phpQuery::callbackRun($callback, array($v));
			else
				$return = phpQuery::callbackRun($callback, array($return));
		}
		return $return;
	}
	/**
	 * Returns new instance of actual class.
	 *
	 * @param array $newStack Optional. Will replace old stack with new and move old one to history.c
	 */
	public function newInstance($newStack = null)
	{
		$class = get_class($this);
		// support inheritance by passing old object to overloaded constructor
		$new = $class != 'phpQuery'
			? new $class($this, $this->getDocumentID())
			: new phpQueryObject($this->getDocumentID());
		$new->previous = $this;
		if (is_null($newStack)) {
			$new->elements = $this->elements;
			if ($this->elementsBackup)
				$this->elements = $this->elementsBackup;
		} else if (is_string($newStack)) {
			$new->elements = phpQuery::pq($newStack, $this->getDocumentID())->stack();
		} else {
			$new->elements = $newStack;
		}
		return $new;
	}
	/**
	 * Enter description here...
	 *
	 * In the future, when PHP will support XLS 2.0, then we would do that this way:
	 * contains(tokenize(@class, '\s'), "something")
	 * @param unknown_type $class
	 * @param unknown_type $node
	 * @return boolean
	 * @access private
	 */
	protected function matchClasses($class, $node)
	{
		// multi-class
		if (mb_strpos($class, '.', 1)) {
			$classes = explode('.', substr($class, 1));
			$classesCount = count($classes);
			$nodeClasses = explode(' ', $node->getAttribute('class'));
			$nodeClassesCount = count($nodeClasses);
			if ($classesCount > $nodeClassesCount)
				return false;
			$diff = count(
				array_diff(
					$classes,
					$nodeClasses
				)
			);
			if (!$diff)
				return true;
			// single-class
		} else {
			return in_array(
				// strip leading dot from class name
				substr($class, 1),
				// get classes for element as array
				explode(' ', $node->getAttribute('class'))
			);
		}
	}
	/**
	 * @access private
	 */
	protected function runQuery($XQuery, $selector = null, $compare = null)
	{
		if ($compare && !method_exists($this, $compare))
			return false;
		$stack = array();
		if (!$this->elements)
			$this->debug('Stack empty, skipping...');
		//		var_dump($this->elements[0]->nodeType);
		// element, document
		foreach ($this->stack(array(1, 9, 13)) as $k => $stackNode) {
			$detachAfter = false;
			// to work on detached nodes we need temporary place them somewhere
			// thats because context xpath queries sucks ;]
			$testNode = $stackNode;
			while ($testNode) {
				if (!$testNode->parentNode && !$this->isRoot($testNode)) {
					$this->root->appendChild($testNode);
					$detachAfter = $testNode;
					break;
				}
				$testNode = isset($testNode->parentNode)
					? $testNode->parentNode
					: null;
			}
			// XXX tmp ?
			$xpath = $this->documentWrapper->isXHTML
				? $this->getNodeXpath($stackNode, 'html')
				: $this->getNodeXpath($stackNode);
			// FIXME pseudoclasses-only query, support XML
			$query = $XQuery == '//' && $xpath == '/html[1]'
				? '//*'
				: $xpath . $XQuery;
			$this->debug("XPATH: {$query}");
			// run query, get elements
			$nodes = $this->xpath->query($query);
			$this->debug("QUERY FETCHED");
			if (!$nodes->length)
				$this->debug('Nothing found');
			$debug = array();
			foreach ($nodes as $node) {
				$matched = false;
				if ($compare) {
					phpQuery::$debug ?
						$this->debug("Found: " . $this->whois($node) . ", comparing with {$compare}()")
						: null;
					$phpQueryDebug = phpQuery::$debug;
					phpQuery::$debug = false;
					// TODO ??? use phpQuery::callbackRun()
					if (call_user_func_array(array($this, $compare), array($selector, $node)))
						$matched = true;
					phpQuery::$debug = $phpQueryDebug;
				} else {
					$matched = true;
				}
				if ($matched) {
					if (phpQuery::$debug)
						$debug[] = $this->whois($node);
					$stack[] = $node;
				}
			}
			if (phpQuery::$debug) {
				$this->debug("Matched " . count($debug) . ": " . implode(', ', $debug));
			}
			if ($detachAfter)
				$this->root->removeChild($detachAfter);
		}
		$this->elements = $stack;
	}
	/**
	 * Enter description here...
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function find($selectors, $context = null, $noHistory = false)
	{
		if (!$noHistory)
			// backup last stack /for end()/
			$this->elementsBackup = $this->elements;
		// allow to define context
		// TODO combine code below with phpQuery::pq() context guessing code
		//   as generic function
		if ($context) {
			if (!is_array($context) && $context instanceof DOMELEMENT)
				$this->elements = array($context);
			else if (is_array($context)) {
				$this->elements = array();
				foreach ($context as $c)
					if ($c instanceof DOMELEMENT)
						$this->elements[] = $c;
			} else if ($context instanceof self)
				$this->elements = $context->elements;
		}
		$queries = $this->parseSelector($selectors);
		$this->debug(array('FIND', $selectors, $queries));
		$XQuery = '';
		// remember stack state because of multi-queries
		$oldStack = $this->elements;
		// here we will be keeping found elements
		$stack = array();
		foreach ($queries as $selector) {
			$this->elements = $oldStack;
			$delimiterBefore = false;
			foreach ($selector as $s) {
				// TAG
				$isTag = extension_loaded('mbstring') && phpQuery::$mbstringSupport
					? mb_ereg_match('^[\w|\||-]+$', $s) || $s == '*'
					: preg_match('@^[\w|\||-]+$@', $s) || $s == '*';
				if ($isTag) {
					if ($this->isXML()) {
						// namespace support
						if (mb_strpos($s, '|') !== false) {
							$ns = $tag = null;
							list($ns, $tag) = explode('|', $s);
							$XQuery .= "$ns:$tag";
						} else if ($s == '*') {
							$XQuery .= "*";
						} else {
							$XQuery .= "*[local-name()='$s']";
						}
					} else {
						$XQuery .= $s;
					}
					// ID
				} else if ($s[0] == '#') {
					if ($delimiterBefore)
						$XQuery .= '*';
					$XQuery .= "[@id='" . substr($s, 1) . "']";
					// ATTRIBUTES
				} else if ($s[0] == '[') {
					if ($delimiterBefore)
						$XQuery .= '*';
					// strip side brackets
					$attr = trim($s, '][');
					$execute = false;
					// attr with specifed value
					if (mb_strpos($s, '=')) {
						$value = null;
						list($attr, $value) = explode('=', $attr);
						$value = trim($value, "'\"");
						if ($this->isRegexp($attr)) {
							// cut regexp character
							$attr = substr($attr, 0, -1);
							$execute = true;
							$XQuery .= "[@{$attr}]";
						} else {
							$XQuery .= "[@{$attr}='{$value}']";
						}
						// attr without specified value
					} else {
						$XQuery .= "[@{$attr}]";
					}
					if ($execute) {
						$this->runQuery($XQuery, $s, 'is');
						$XQuery = '';
						if (!$this->length())
							break;
					}
					// CLASSES
				} else if ($s[0] == '.') {
					// TODO use return $this->find("./self::*[contains(concat(\" \",@class,\" \"), \" $class \")]");
					// thx wizDom ;)
					if ($delimiterBefore)
						$XQuery .= '*';
					$XQuery .= '[@class]';
					$this->runQuery($XQuery, $s, 'matchClasses');
					$XQuery = '';
					if (!$this->length())
						break;
					// ~ General Sibling Selector
				} else if ($s[0] == '~') {
					$this->runQuery($XQuery);
					$XQuery = '';
					$this->elements = $this
						->siblings(
							substr($s, 1)
						)->elements;
					if (!$this->length())
						break;
					// + Adjacent sibling selectors
				} else if ($s[0] == '+') {
					// TODO /following-sibling::
					$this->runQuery($XQuery);
					$XQuery = '';
					$subSelector = substr($s, 1);
					$subElements = $this->elements;
					$this->elements = array();
					foreach ($subElements as $node) {
						// search first DOMElement sibling
						$test = $node->nextSibling;
						while ($test && !($test instanceof DOMELEMENT))
							$test = $test->nextSibling;
						if ($test && $this->is($subSelector, $test))
							$this->elements[] = $test;
					}
					if (!$this->length())
						break;
					// PSEUDO CLASSES
				} else if ($s[0] == ':') {
					// TODO optimization for :first :last
					if ($XQuery) {
						$this->runQuery($XQuery);
						$XQuery = '';
					}
					if (!$this->length())
						break;
					$this->pseudoClasses($s);
					if (!$this->length())
						break;
					// DIRECT DESCENDANDS
				} else if ($s == '>') {
					$XQuery .= '/';
					$delimiterBefore = 2;
					// ALL DESCENDANDS
				} else if ($s == ' ') {
					$XQuery .= '//';
					$delimiterBefore = 2;
					// ERRORS
				} else {
					phpQuery::debug("Unrecognized token '$s'");
				}
				$delimiterBefore = $delimiterBefore === 2;
			}
			// run query if any
			if ($XQuery && $XQuery != '//') {
				$this->runQuery($XQuery);
				$XQuery = '';
			}
			foreach ($this->elements as $node)
				if (!$this->elementsContainsNode($node, $stack))
					$stack[] = $node;
		}
		$this->elements = $stack;
		return $this->newInstance();
	}
	/**
	 * @todo create API for classes with pseudoselectors
	 * @access private
	 */
	protected function pseudoClasses($class)
	{
		// TODO clean args parsing ?
		$class = ltrim($class, ':');
		$haveArgs = mb_strpos($class, '(');
		if ($haveArgs !== false) {
			$args = substr($class, $haveArgs + 1, -1);
			$class = substr($class, 0, $haveArgs);
		}
		switch ($class) {
			case 'even':
			case 'odd':
				$stack = array();
				foreach ($this->elements as $i => $node) {
					if ($class == 'even' && ($i % 2) == 0)
						$stack[] = $node;
					else if ($class == 'odd' && $i % 2)
						$stack[] = $node;
				}
				$this->elements = $stack;
				break;
			case 'eq':
				$k = intval($args);
				if ($k < 0) {
					$this->elements = array($this->elements[count($this->elements) + $k]);
				} else {
					$this->elements = isset($this->elements[$k])
						? array($this->elements[$k])
						: array();
				}
				break;
			case 'gt':
				$this->elements = array_slice($this->elements, $args + 1);
				break;
			case 'lt':
				$this->elements = array_slice($this->elements, 0, $args + 1);
				break;
			case 'first':
				if (isset($this->elements[0]))
					$this->elements = array($this->elements[0]);
				break;
			case 'last':
				if ($this->elements)
					$this->elements = array($this->elements[count($this->elements) - 1]);
				break;
				/*case 'parent':
				$stack = array();
				foreach($this->elements as $node) {
					if ( $node->childNodes->length )
						$stack[] = $node;
				}
				$this->elements = $stack;
				break;*/
			case 'contains':
				$text = trim($args, "\"'");
				$stack = array();
				foreach ($this->elements as $node) {
					if (mb_stripos($node->textContent, $text) === false)
						continue;
					$stack[] = $node;
				}
				$this->elements = $stack;
				break;
			case 'not':
				$selector = self::unQuote($args);
				$this->elements = $this->not($selector)->stack();
				break;
			case 'slice':
				// TODO jQuery difference ?
				$args = explode(
					',',
					str_replace(', ', ',', trim($args, "\"'"))
				);
				$start = $args[0];
				$end = isset($args[1])
					? $args[1]
					: null;
				if ($end > 0)
					$end = $end - $start;
				$this->elements = array_slice($this->elements, $start, $end);
				break;
			case 'has':
				$selector = trim($args, "\"'");
				$stack = array();
				foreach ($this->stack(1) as $el) {
					if ($this->find($selector, $el, true)->length)
						$stack[] = $el;
				}
				$this->elements = $stack;
				break;
			case 'submit':
			case 'reset':
				$this->elements = phpQuery::merge(
					$this->map(
						array($this, 'is'),
						"input[type=$class]",
						new CallbackParam()
					),
					$this->map(
						array($this, 'is'),
						"button[type=$class]",
						new CallbackParam()
					)
				);
				break;
				//				$stack = array();
				//				foreach($this->elements as $node)
				//					if ($node->is('input[type=submit]') || $node->is('button[type=submit]'))
				//						$stack[] = $el;
				//				$this->elements = $stack;
			case 'input':
				$this->elements = $this->map(
					array($this, 'is'),
					'input',
					new CallbackParam()
				)->elements;
				break;
			case 'password':
			case 'checkbox':
			case 'radio':
			case 'hidden':
			case 'image':
			case 'file':
				$this->elements = $this->map(
					array($this, 'is'),
					"input[type=$class]",
					new CallbackParam()
				)->elements;
				break;
			case 'parent':
				$this->elements = $this->map(
					function ($node) {
						return $node instanceof DOMELEMENT && $node->childNodes->length
							? $node : null;
					}
				)->elements;
				break;
			case 'empty':
				$this->elements = $this->map(
					function ($node) {
						return $node instanceof DOMELEMENT && $node->childNodes->length
							? null : $node;
					}
				)->elements;
				break;
			case 'disabled':
			case 'selected':
			case 'checked':
				$this->elements = $this->map(
					array($this, 'is'),
					"[$class]",
					new CallbackParam()
				)->elements;
				break;
			case 'enabled':
				$this->elements = $this->map(
					function ($node) {
						return pq($node)->not(":disabled") ? $node : null;
					}
				)->elements;
				break;
			case 'header':
				$this->elements = $this->map(
					function ($node) {
						$isHeader = isset($node->tagName) && in_array($node->tagName, array(
							"h1", "h2", "h3", "h4", "h5", "h6", "h7"
						));
						return $isHeader
							? $node
							: null;
					}
				)->elements;
				//				$this->elements = $this->map(
				//					create_function('$node', '$node = pq($node);
				//						return $node->is("h1")
				//							|| $node->is("h2")
				//							|| $node->is("h3")
				//							|| $node->is("h4")
				//							|| $node->is("h5")
				//							|| $node->is("h6")
				//							|| $node->is("h7")
				//							? $node
				//							: null;')
				//				)->elements;
				break;
			case 'only-child':
				$this->elements = $this->map(
					function ($node) {
						return pq($node)->siblings()->size() == 0 ? $node : null;
					}
				)->elements;
				break;
			case 'first-child':
				$this->elements = $this->map(
					function ($node) {
						return pq($node)->prevAll()->size() == 0 ? $node : null;
					}
				)->elements;
				break;
			case 'last-child':
				$this->elements = $this->map(
					function ($node) {
						return pq($node)->nextAll()->size() == 0 ? $node : null;
					}
				)->elements;
				break;
			case 'nth-child':
				$param = trim($args, "\"'");
				if (!$param)
					break;
				// nth-child(n+b) to nth-child(1n+b)
				if ($param[0] == 'n')
					$param = '1' . $param;
				// :nth-child(index/even/odd/equation)
				if ($param == 'even' || $param == 'odd')
					$mapped = $this->map(
						function ($node, $param) {
							$index = pq($node)->prevAll()->size() + 1;
							if ($param == "even" && ($index % 2) == 0)
								return $node;
							else if ($param == "odd" && $index % 2 == 1)
								return $node;
							else
								return null;
						},
						new CallbackParam(),
						$param
					);
				else if (mb_strlen($param) > 1 && preg_match('/^(\d*)n([-+]?)(\d*)/', $param) === 1)
					// an+b
					$mapped = $this->map(
						function ($node, $param) {
							$prevs = pq($node)->prevAll()->size();
							$index = 1 + $prevs;

							preg_match("/^(\d*)n([-+]?)(\d*)/", $param, $matches);
							$a = intval($matches[1]);
							$b = intval($matches[3]);
							if ($matches[2] === "-") {
								$b = -$b;
							}

							if ($a > 0) {
								return ($index - $b) % $a == 0
									? $node
									: null;
								phpQuery::debug($a . "*" . floor($index / $a) . "+$b-1 == " . ($a * floor($index / $a) + $b - 1) . " ?= $prevs");
								return $a * floor($index / $a) + $b - 1 == $prevs
									? $node
									: null;
							} else if ($a == 0)
								return $index == $b
									? $node
									: null;
							else
								// negative value
								return $index <= $b
									? $node
									: null;
							//							if (! $b)
							//								return $index%$a == 0
							//									? $node
							//									: null;
							//							else
							//								return ($index-$b)%$a == 0
							//									? $node
							//									: null;
						},
						new CallbackParam(),
						$param
					);
				else
					// index
					$mapped = $this->map(
						function ($node, $index) {
							$prevs = pq($node)->prevAll()->size();
							if ($prevs && $prevs == $index - 1)
								return $node;
							else if (!$prevs && $index == 1)
								return $node;
							else
								return null;
						},
						new CallbackParam(),
						$param
					);
				$this->elements = $mapped->elements;
				break;
			default:
				$this->debug("Unknown pseudoclass '{$class}', skipping...");
		}
	}
	/**
	 * @access private
	 */
	protected function __pseudoClassParam($paramsString)
	{
		// TODO;
	}
	/**
	 * Enter description here...
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function is($selector, $nodes = null)
	{
		phpQuery::debug(array("Is:", $selector));
		if (!$selector)
			return false;
		$oldStack = $this->elements;
		$returnArray = false;
		if ($nodes && is_array($nodes)) {
			$this->elements = $nodes;
		} else if ($nodes)
			$this->elements = array($nodes);
		$this->filter($selector, true);
		$stack = $this->elements;
		$this->elements = $oldStack;
		if ($nodes)
			return $stack ? $stack : null;
		return (bool)count($stack);
	}
	/**
	 * Enter description here...
	 * jQuery difference.
	 *
	 * Callback:
	 * - $index int
	 * - $node DOMNode
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 * @link http://docs.jquery.com/Traversing/filter
	 */
	public function filterCallback($callback, $_skipHistory = false)
	{
		if (!$_skipHistory) {
			$this->elementsBackup = $this->elements;
			$this->debug("Filtering by callback");
		}
		$newStack = array();
		foreach ($this->elements as $index => $node) {
			$result = phpQuery::callbackRun($callback, array($index, $node));
			if (is_null($result) || (!is_null($result) && $result))
				$newStack[] = $node;
		}
		$this->elements = $newStack;
		return $_skipHistory
			? $this
			: $this->newInstance();
	}
	/**
	 * Enter description here...
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 * @link http://docs.jquery.com/Traversing/filter
	 */
	public function filter($selectors, $_skipHistory = false)
	{
		if ($selectors instanceof Callback or $selectors instanceof Closure)
			return $this->filterCallback($selectors, $_skipHistory);
		if (!$_skipHistory)
			$this->elementsBackup = $this->elements;
		$notSimpleSelector = array(' ', '>', '~', '+', '/');
		if (!is_array($selectors))
			$selectors = $this->parseSelector($selectors);
		if (!$_skipHistory)
			$this->debug(array("Filtering:", $selectors));
		$finalStack = array();
		foreach ($selectors as $selector) {
			$stack = array();
			if (!$selector)
				break;
			// avoid first space or /
			if (in_array($selector[0], $notSimpleSelector))
				$selector = array_slice($selector, 1);
			// PER NODE selector chunks
			foreach ($this->stack() as $node) {
				$break = false;
				foreach ($selector as $s) {
					if (!($node instanceof DOMELEMENT)) {
						// all besides DOMElement
						if ($s[0] == '[') {
							$attr = trim($s, '[]');
							if (mb_strpos($attr, '=')) {
								list($attr, $val) = explode('=', $attr);
								if ($attr == 'nodeType' && $node->nodeType != $val)
									$break = true;
							}
						} else
							$break = true;
					} else {
						// DOMElement only
						// ID
						if ($s[0] == '#') {
							if ($node->getAttribute('id') != substr($s, 1))
								$break = true;
							// CLASSES
						} else if ($s[0] == '.') {
							if (!$this->matchClasses($s, $node))
								$break = true;
							// ATTRS
						} else if ($s[0] == '[') {
							// strip side brackets
							$attr = trim($s, '[]');
							if (mb_strpos($attr, '=')) {
								list($attr, $val) = explode('=', $attr);
								$val = self::unQuote($val);
								if ($attr == 'nodeType') {
									if ($val != $node->nodeType)
										$break = true;
								} else if ($this->isRegexp($attr)) {
									$val = extension_loaded('mbstring') && phpQuery::$mbstringSupport
										? quotemeta(trim($val, '"\''))
										: preg_quote(trim($val, '"\''), '@');
									// switch last character
									switch (substr($attr, -1)) {
											// quotemeta used insted of preg_quote
											// http://code.google.com/p/phpquery/issues/detail?id=76
										case '^':
											$pattern = '^' . $val;
											break;
										case '*':
											$pattern = '.*' . $val . '.*';
											break;
										case '$':
											$pattern = '.*' . $val . '$';
											break;
									}
									// cut last character
									$attr = substr($attr, 0, -1);
									$isMatch = extension_loaded('mbstring') && phpQuery::$mbstringSupport
										? mb_ereg_match($pattern, $node->getAttribute($attr))
										: preg_match("@{$pattern}@", $node->getAttribute($attr));
									if (!$isMatch)
										$break = true;
								} else if ($node->getAttribute($attr) != $val)
									$break = true;
							} else if (!$node->hasAttribute($attr))
								$break = true;
							// PSEUDO CLASSES
						} else if ($s[0] == ':') {
							// skip
							// TAG
						} else if (trim($s)) {
							if ($s != '*') {
								// TODO namespaces
								if (isset($node->tagName)) {
									if ($node->tagName != $s)
										$break = true;
								} else if ($s == 'html' && !$this->isRoot($node))
									$break = true;
							}
							// AVOID NON-SIMPLE SELECTORS
						} else if (in_array($s, $notSimpleSelector)) {
							$break = true;
							$this->debug(array('Skipping non simple selector', $selector));
						}
					}
					if ($break)
						break;
				}
				// if element passed all chunks of selector - add it to new stack
				if (!$break)
					$stack[] = $node;
			}
			$tmpStack = $this->elements;
			$this->elements = $stack;
			// PER ALL NODES selector chunks
			foreach ($selector as $s)
				// PSEUDO CLASSES
				if ($s[0] == ':')
					$this->pseudoClasses($s);
			foreach ($this->elements as $node)
				// XXX it should be merged without duplicates
				// but jQuery doesnt do that
				$finalStack[] = $node;
			$this->elements = $tmpStack;
		}
		$this->elements = $finalStack;
		if ($_skipHistory) {
			return $this;
		} else {
			$this->debug("Stack length after filter(): " . count($finalStack));
			return $this->newInstance();
		}
	}
	/**
	 *
	 * @param $value
	 * @return unknown_type
	 * @TODO implement in all methods using passed parameters
	 */
	protected static function unQuote($value)
	{
		return $value[0] == '\'' || $value[0] == '"'
			? substr($value, 1, -1)
			: $value;
	}
	/**
	 * Enter description here...
	 *
	 * @link http://docs.jquery.com/Ajax/load
	 * @return phpQuery|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 * @todo Support $selector
	 */
	public function load($url, $data = null, $callback = null)
	{
		if ($data && !is_array($data)) {
			$callback = $data;
			$data = null;
		}
		if (mb_strpos($url, ' ') !== false) {
			$matches = null;
			if (extension_loaded('mbstring') && phpQuery::$mbstringSupport)
				mb_ereg('^([^ ]+) (.*)$', $url, $matches);
			else
				preg_match('^([^ ]+) (.*)$', $url, $matches);
			$url = $matches[1];
			$selector = $matches[2];
			// FIXME this sucks, pass as callback param
			$this->_loadSelector = $selector;
		}
		$ajax = array(
			'url' => $url,
			'type' => $data ? 'POST' : 'GET',
			'data' => $data,
			'complete' => $callback,
			'success' => array($this, '__loadSuccess')
		);
		phpQuery::ajax($ajax);
		return $this;
	}
	/**
	 * @access private
	 * @param $html
	 * @return unknown_type
	 */
	public function __loadSuccess($html)
	{
		if ($this->_loadSelector) {
			$html = phpQuery::newDocument($html)->find($this->_loadSelector);
			unset($this->_loadSelector);
		}
		foreach ($this->stack(1) as $node) {
			phpQuery::pq($node, $this->getDocumentID())
				->markup($html);
		}
	}
	/**
	 * Enter description here...
	 *
	 * @return phpQuery|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 * @todo
	 */
	public function css()
	{
		// TODO
		return $this;
	}
	/**
	 * @todo
	 *
	 */
	public function show()
	{
		// TODO
		return $this;
	}
	/**
	 * @todo
	 *
	 */
	public function hide()
	{
		// TODO
		return $this;
	}
	/**
	 * Trigger a type of event on every matched element.
	 *
	 * @param unknown_type $type
	 * @param unknown_type $data
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 * @TODO support more than event in $type (space-separated)
	 */
	public function trigger($type, $data = array())
	{
		foreach ($this->elements as $node)
			phpQueryEvents::trigger($this->getDocumentID(), $type, $data, $node);
		return $this;
	}
	/**
	 * This particular method triggers all bound event handlers on an element (for a specific event type) WITHOUT executing the browsers default actions.
	 *
	 * @param unknown_type $type
	 * @param unknown_type $data
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 * @TODO
	 */
	public function triggerHandler($type, $data = array())
	{
		// TODO;
	}
	/**
	 * Binds a handler to one or more events (like click) for each matched element.
	 * Can also bind custom events.
	 *
	 * @param unknown_type $type
	 * @param unknown_type $data Optional
	 * @param unknown_type $callback
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 * @TODO support '!' (exclusive) events
	 * @TODO support more than event in $type (space-separated)
	 */
	public function bind($type, $data, $callback = null)
	{
		// TODO check if $data is callable, not using is_callable
		if (!isset($callback)) {
			$callback = $data;
			$data = null;
		}
		foreach ($this->elements as $node)
			phpQueryEvents::add($this->getDocumentID(), $node, $type, $data, $callback);
		return $this;
	}
	/**
	 * Enter description here...
	 *
	 * @param unknown_type $type
	 * @param unknown_type $callback
	 * @return unknown
	 * @TODO namespace events
	 * @TODO support more than event in $type (space-separated)
	 */
	public function unbind($type = null, $callback = null)
	{
		foreach ($this->elements as $node)
			phpQueryEvents::remove($this->getDocumentID(), $node, $type, $callback);
		return $this;
	}
	/**
	 * Enter description here...
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function change($callback = null)
	{
		if ($callback)
			return $this->bind('change', $callback);
		return $this->trigger('change');
	}
	/**
	 * Enter description here...
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function submit($callback = null)
	{
		if ($callback)
			return $this->bind('submit', $callback);
		return $this->trigger('submit');
	}
	/**
	 * Enter description here...
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function click($callback = null)
	{
		if ($callback)
			return $this->bind('click', $callback);
		return $this->trigger('click');
	}
	/**
	 * Enter description here...
	 *
	 * @param String|phpQuery
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function wrapAllOld($wrapper)
	{
		$wrapper = pq($wrapper)->_clone();
		if (!$wrapper->length() || !$this->length())
			return $this;
		$wrapper->insertBefore($this->elements[0]);
		$deepest = $wrapper->elements[0];
		while ($deepest->firstChild && $deepest->firstChild instanceof DOMELEMENT)
			$deepest = $deepest->firstChild;
		pq($deepest)->append($this);
		return $this;
	}
	/**
	 * Enter description here...
	 *
	 * TODO testme...
	 * @param String|phpQuery
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function wrapAll($wrapper)
	{
		if (!$this->length())
			return $this;
		return phpQuery::pq($wrapper, $this->getDocumentID())
			->clone()
			->insertBefore($this->get(0))
			->map(array($this, '___wrapAllCallback'))
			->append($this);
	}
	/**
	 *
	 * @param $node
	 * @return unknown_type
	 * @access private
	 */
	public function ___wrapAllCallback($node)
	{
		$deepest = $node;
		while ($deepest->firstChild && $deepest->firstChild instanceof DOMELEMENT)
			$deepest = $deepest->firstChild;
		return $deepest;
	}
	/**
	 * Enter description here...
	 * NON JQUERY METHOD
	 *
	 * @param String|phpQuery
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function wrapAllPHP($codeBefore, $codeAfter)
	{
		return $this
			->slice(0, 1)
			->beforePHP($codeBefore)
			->end()
			->slice(-1)
			->afterPHP($codeAfter)
			->end();
	}
	/**
	 * Enter description here...
	 *
	 * @param String|phpQuery
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function wrap($wrapper)
	{
		foreach ($this->stack() as $node)
			phpQuery::pq($node, $this->getDocumentID())->wrapAll($wrapper);
		return $this;
	}
	/**
	 * Enter description here...
	 *
	 * @param String|phpQuery
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function wrapPHP($codeBefore, $codeAfter)
	{
		foreach ($this->stack() as $node)
			phpQuery::pq($node, $this->getDocumentID())->wrapAllPHP($codeBefore, $codeAfter);
		return $this;
	}
	/**
	 * Enter description here...
	 *
	 * @param String|phpQuery
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function wrapInner($wrapper)
	{
		foreach ($this->stack() as $node)
			phpQuery::pq($node, $this->getDocumentID())->contents()->wrapAll($wrapper);
		return $this;
	}
	/**
	 * Enter description here...
	 *
	 * @param String|phpQuery
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function wrapInnerPHP($codeBefore, $codeAfter)
	{
		foreach ($this->stack(1) as $node)
			phpQuery::pq($node, $this->getDocumentID())->contents()
				->wrapAllPHP($codeBefore, $codeAfter);
		return $this;
	}
	/**
	 * Enter description here...
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 * @testme Support for text nodes
	 */
	public function contents()
	{
		$stack = array();
		foreach ($this->stack(1) as $el) {
			// FIXME (fixed) http://code.google.com/p/phpquery/issues/detail?id=56
			//			if (! isset($el->childNodes))
			//				continue;
			foreach ($el->childNodes as $node) {
				$stack[] = $node;
			}
		}
		return $this->newInstance($stack);
	}
	/**
	 * Enter description here...
	 *
	 * jQuery difference.
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function contentsUnwrap()
	{
		foreach ($this->stack(1) as $node) {
			if (!$node->parentNode)
				continue;
			$childNodes = array();
			// any modification in DOM tree breaks childNodes iteration, so cache them first
			foreach ($node->childNodes as $chNode)
				$childNodes[] = $chNode;
			foreach ($childNodes as $chNode)
				//				$node->parentNode->appendChild($chNode);
				$node->parentNode->insertBefore($chNode, $node);
			$node->parentNode->removeChild($node);
		}
		return $this;
	}
	/**
	 * Enter description here...
	 *
	 * jQuery difference.
	 */
	public function switchWith($markup)
	{
		$markup = pq($markup, $this->getDocumentID());
		$content = null;
		foreach ($this->stack(1) as $node) {
			pq($node)
				->contents()->toReference($content)->end()
				->replaceWith($markup->clone()->append($content));
		}
		return $this;
	}
	/**
	 * Enter description here...
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function eq($num)
	{
		$oldStack = $this->elements;
		$this->elementsBackup = $this->elements;
		$this->elements = array();
		if (isset($oldStack[$num]))
			$this->elements[] = $oldStack[$num];
		return $this->newInstance();
	}
	/**
	 * Enter description here...
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function size()
	{
		return count($this->elements);
	}
	/**
	 * Enter description here...
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 * @deprecated Use length as attribute
	 */
	public function length()
	{
		return $this->size();
	}

	#[\ReturnTypeWillChange]
	public function count()
	{
		return $this->size();
	}
	/**
	 * Enter description here...
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 * @todo $level
	 */
	public function end($level = 1)
	{
		//		$this->elements = array_pop( $this->history );
		//		return $this;
		//		$this->previous->DOM = $this->DOM;
		//		$this->previous->XPath = $this->XPath;
		return $this->previous
			? $this->previous
			: $this;
	}
	/**
	 * Enter description here...
	 * Normal use ->clone() .
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 * @access private
	 */
	public function _clone()
	{
		$newStack = array();
		//pr(array('copy... ', $this->whois()));
		//$this->dumpHistory('copy');
		$this->elementsBackup = $this->elements;
		foreach ($this->elements as $node) {
			$newStack[] = $node->cloneNode(true);
		}
		$this->elements = $newStack;
		return $this->newInstance();
	}
	/**
	 * Enter description here...
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function replaceWithPHP($code)
	{
		return $this->replaceWith(phpQuery::php($code));
	}
	/**
	 * Enter description here...
	 *
	 * @param String|phpQuery $content
	 * @link http://docs.jquery.com/Manipulation/replaceWith#content
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function replaceWith($content)
	{
		return $this->after($content)->remove();
	}
	/**
	 * Enter description here...
	 *
	 * @param String $selector
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 * @todo this works ?
	 */
	public function replaceAll($selector)
	{
		foreach (phpQuery::pq($selector, $this->getDocumentID()) as $node)
			phpQuery::pq($node, $this->getDocumentID())
				->after($this->_clone())
				->remove();
		return $this;
	}
	/**
	 * Enter description here...
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function remove($selector = null)
	{
		$loop = $selector
			? $this->filter($selector)->elements
			: $this->elements;
		foreach ($loop as $node) {
			if (!$node->parentNode)
				continue;
			if (isset($node->tagName))
				$this->debug("Removing '{$node->tagName}'");
			$node->parentNode->removeChild($node);
			// Mutation event
			$event = new DOMEvent(array(
				'target' => $node,
				'type' => 'DOMNodeRemoved'
			));
			phpQueryEvents::trigger(
				$this->getDocumentID(),
				$event->type,
				array($event),
				$node
			);
		}
		return $this;
	}
	protected function markupEvents($newMarkup, $oldMarkup, $node)
	{
		if ($node->tagName == 'textarea' && $newMarkup != $oldMarkup) {
			$event = new DOMEvent(array(
				'target' => $node,
				'type' => 'change'
			));
			phpQueryEvents::trigger(
				$this->getDocumentID(),
				$event->type,
				array($event),
				$node
			);
		}
	}
	/**
	 * jQuey difference
	 *
	 * @param $markup
	 * @return unknown_type
	 * @TODO trigger change event for textarea
	 */
	public function markup($markup = null, $callback1 = null, $callback2 = null, $callback3 = null)
	{
		$args = func_get_args();
		if ($this->documentWrapper->isXML)
			return call_user_func_array(array($this, 'xml'), $args);
		else
			return call_user_func_array(array($this, 'html'), $args);
	}
	/**
	 * jQuey difference
	 *
	 * @param $markup
	 * @return unknown_type
	 */
	public function markupOuter($callback1 = null, $callback2 = null, $callback3 = null)
	{
		$args = func_get_args();
		if ($this->documentWrapper->isXML)
			return call_user_func_array(array($this, 'xmlOuter'), $args);
		else
			return call_user_func_array(array($this, 'htmlOuter'), $args);
	}
	/**
	 * Enter description here...
	 *
	 * @param unknown_type $html
	 * @return string|phpQuery|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 * @TODO force html result
	 */
	public function html($html = null, $callback1 = null, $callback2 = null, $callback3 = null)
	{
		if (isset($html)) {
			// INSERT
			$nodes = $this->documentWrapper->import($html);
			$this->empty();
			foreach ($this->stack(1) as $alreadyAdded => $node) {
				// for now, limit events for textarea
				if (($this->isXHTML() || $this->isHTML()) && $node->tagName == 'textarea')
					$oldHtml = pq($node, $this->getDocumentID())->markup();
				foreach ($nodes as $newNode) {
					$node->appendChild(
						$alreadyAdded
							? $newNode->cloneNode(true)
							: $newNode
					);
				}
				// for now, limit events for textarea
				if (($this->isXHTML() || $this->isHTML()) && $node->tagName == 'textarea')
					$this->markupEvents($html, $oldHtml, $node);
			}
			return $this;
		} else {
			// FETCH
			$return = $this->documentWrapper->markup($this->elements, true);
			$args = func_get_args();
			foreach (array_slice($args, 1) as $callback) {
				$return = phpQuery::callbackRun($callback, array($return));
			}
			return $return;
		}
	}
	/**
	 * @TODO force xml result
	 */
	public function xml($xml = null, $callback1 = null, $callback2 = null, $callback3 = null)
	{
		$args = func_get_args();
		return call_user_func_array(array($this, 'html'), $args);
	}
	/**
	 * Enter description here...
	 * @TODO force html result
	 *
	 * @return String
	 */
	public function htmlOuter($callback1 = null, $callback2 = null, $callback3 = null)
	{
		$markup = $this->documentWrapper->markup($this->elements);
		// pass thou callbacks
		$args = func_get_args();
		foreach ($args as $callback) {
			$markup = phpQuery::callbackRun($callback, array($markup));
		}
		return $markup;
	}
	/**
	 * @TODO force xml result
	 */
	public function xmlOuter($callback1 = null, $callback2 = null, $callback3 = null)
	{
		$args = func_get_args();
		return call_user_func_array(array($this, 'htmlOuter'), $args);
	}
	public function __toString()
	{
		return $this->markupOuter();
	}
	/**
	 * Just like html(), but returns markup with VALID (dangerous) PHP tags.
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 * @todo support returning markup with PHP tags when called without param
	 */
	public function php($code = null)
	{
		return $this->markupPHP($code);
	}
	/**
	 * Enter description here...
	 *
	 * @param $code
	 * @return unknown_type
	 */
	public function markupPHP($code = null)
	{
		return isset($code)
			? $this->markup(phpQuery::php($code))
			: phpQuery::markupToPHP($this->markup());
	}
	/**
	 * Enter description here...
	 *
	 * @param $code
	 * @return unknown_type
	 */
	public function markupOuterPHP()
	{
		return phpQuery::markupToPHP($this->markupOuter());
	}
	/**
	 * Enter description here...
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function children($selector = null)
	{
		$stack = array();
		foreach ($this->stack(1) as $node) {
			//			foreach($node->getElementsByTagName('*') as $newNode) {
			foreach ($node->childNodes as $newNode) {
				if ($newNode->nodeType != 1)
					continue;
				if ($selector && !$this->is($selector, $newNode))
					continue;
				if ($this->elementsContainsNode($newNode, $stack))
					continue;
				$stack[] = $newNode;
			}
		}
		$this->elementsBackup = $this->elements;
		$this->elements = $stack;
		return $this->newInstance();
	}
	/**
	 * Enter description here...
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function ancestors($selector = null)
	{
		return $this->children($selector);
	}
	/**
	 * Enter description here...
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function append($content)
	{
		return $this->insert($content, __FUNCTION__);
	}
	/**
	 * Enter description here...
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function appendPHP($content)
	{
		return $this->insert("<php><!-- {$content} --></php>", 'append');
	}
	/**
	 * Enter description here...
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function appendTo($seletor)
	{
		return $this->insert($seletor, __FUNCTION__);
	}
	/**
	 * Enter description here...
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function prepend($content)
	{
		return $this->insert($content, __FUNCTION__);
	}
	/**
	 * Enter description here...
	 *
	 * @todo accept many arguments, which are joined, arrays maybe also
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function prependPHP($content)
	{
		return $this->insert("<php><!-- {$content} --></php>", 'prepend');
	}
	/**
	 * Enter description here...
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function prependTo($seletor)
	{
		return $this->insert($seletor, __FUNCTION__);
	}
	/**
	 * Enter description here...
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function before($content)
	{
		return $this->insert($content, __FUNCTION__);
	}
	/**
	 * Enter description here...
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function beforePHP($content)
	{
		return $this->insert("<php><!-- {$content} --></php>", 'before');
	}
	/**
	 * Enter description here...
	 *
	 * @param String|phpQuery
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function insertBefore($seletor)
	{
		return $this->insert($seletor, __FUNCTION__);
	}
	/**
	 * Enter description here...
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function after($content)
	{
		return $this->insert($content, __FUNCTION__);
	}
	/**
	 * Enter description here...
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function afterPHP($content)
	{
		return $this->insert("<php><!-- {$content} --></php>", 'after');
	}
	/**
	 * Enter description here...
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function insertAfter($seletor)
	{
		return $this->insert($seletor, __FUNCTION__);
	}
	/**
	 * Internal insert method. Don't use it.
	 *
	 * @param unknown_type $target
	 * @param unknown_type $type
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 * @access private
	 */
	public function insert($target, $type)
	{
		$this->debug("Inserting data with '{$type}'");
		$to = false;
		switch ($type) {
			case 'appendTo':
			case 'prependTo':
			case 'insertBefore':
			case 'insertAfter':
				$to = true;
		}
		switch (gettype($target)) {
			case 'string':
				$insertFrom = $insertTo = array();
				if ($to) {
					// INSERT TO
					$insertFrom = $this->elements;
					if (phpQuery::isMarkup($target)) {
						// $target is new markup, import it
						$insertTo = $this->documentWrapper->import($target);
						// insert into selected element
					} else {
						// $tagret is a selector
						$thisStack = $this->elements;
						$this->toRoot();
						$insertTo = $this->find($target)->elements;
						$this->elements = $thisStack;
					}
				} else {
					// INSERT FROM
					$insertTo = $this->elements;
					$insertFrom = $this->documentWrapper->import($target);
				}
				break;
			case 'object':
				$insertFrom = $insertTo = array();
				// phpQuery
				if ($target instanceof self) {
					if ($to) {
						$insertTo = $target->elements;
						if ($this->documentFragment && $this->stackIsRoot())
							// get all body children
							//							$loop = $this->find('body > *')->elements;
							// TODO test it, test it hard...
							//							$loop = $this->newInstance($this->root)->find('> *')->elements;
							$loop = $this->root->childNodes;
						else
							$loop = $this->elements;
						// import nodes if needed
						$insertFrom = $this->getDocumentID() == $target->getDocumentID()
							? $loop
							: $target->documentWrapper->import($loop);
					} else {
						$insertTo = $this->elements;
						if ($target->documentFragment && $target->stackIsRoot())
							// get all body children
							//							$loop = $target->find('body > *')->elements;
							$loop = $target->root->childNodes;
						else
							$loop = $target->elements;
						// import nodes if needed
						$insertFrom = $this->getDocumentID() == $target->getDocumentID()
							? $loop
							: $this->documentWrapper->import($loop);
					}
					// DOMNODE
				} elseif ($target instanceof DOMNODE) {
					// import node if needed
					//					if ( $target->ownerDocument != $this->DOM )
					//						$target = $this->DOM->importNode($target, true);
					if ($to) {
						$insertTo = array($target);
						if ($this->documentFragment && $this->stackIsRoot())
							// get all body children
							$loop = $this->root->childNodes;
						//							$loop = $this->find('body > *')->elements;
						else
							$loop = $this->elements;
						foreach ($loop as $fromNode)
							// import nodes if needed
							$insertFrom[] = !$fromNode->ownerDocument->isSameNode($target->ownerDocument)
								? $target->ownerDocument->importNode($fromNode, true)
								: $fromNode;
					} else {
						// import node if needed
						if (!$target->ownerDocument->isSameNode($this->document))
							$target = $this->document->importNode($target, true);
						$insertTo = $this->elements;
						$insertFrom[] = $target;
					}
				}
				break;
		}
		phpQuery::debug("From " . count($insertFrom) . "; To " . count($insertTo) . " nodes");
		foreach ($insertTo as $insertNumber => $toNode) {
			// we need static relative elements in some cases
			switch ($type) {
				case 'prependTo':
				case 'prepend':
					$firstChild = $toNode->firstChild;
					break;
				case 'insertAfter':
				case 'after':
					$nextSibling = $toNode->nextSibling;
					break;
			}
			foreach ($insertFrom as $fromNode) {
				// clone if inserted already before
				$insert = $insertNumber
					? $fromNode->cloneNode(true)
					: $fromNode;
				switch ($type) {
					case 'appendTo':
					case 'append':
						//						$toNode->insertBefore(
						//							$fromNode,
						//							$toNode->lastChild->nextSibling
						//						);
						$toNode->appendChild($insert);
						$eventTarget = $insert;
						break;
					case 'prependTo':
					case 'prepend':
						$toNode->insertBefore(
							$insert,
							$firstChild
						);
						break;
					case 'insertBefore':
					case 'before':
						if (!$toNode->parentNode)
							throw new Exception("No parentNode, can't do {$type}()");
						else
							$toNode->parentNode->insertBefore(
								$insert,
								$toNode
							);
						break;
					case 'insertAfter':
					case 'after':
						if (!$toNode->parentNode)
							throw new Exception("No parentNode, can't do {$type}()");
						else
							$toNode->parentNode->insertBefore(
								$insert,
								$nextSibling
							);
						break;
				}
				// Mutation event
				$event = new DOMEvent(array(
					'target' => $insert,
					'type' => 'DOMNodeInserted'
				));
				phpQueryEvents::trigger(
					$this->getDocumentID(),
					$event->type,
					array($event),
					$insert
				);
			}
		}
		return $this;
	}
	/**
	 * Enter description here...
	 *
	 * @return Int
	 */
	public function index($subject)
	{
		$index = -1;
		$subject = $subject instanceof phpQueryObject
			? $subject->elements[0]
			: $subject;
		foreach ($this->newInstance() as $k => $node) {
			if ($node->isSameNode($subject))
				$index = $k;
		}
		return $index;
	}
	/**
	 * Enter description here...
	 *
	 * @param unknown_type $start
	 * @param unknown_type $end
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 * @testme
	 */
	public function slice($start, $end = null)
	{
		//		$last = count($this->elements)-1;
		//		$end = $end
		//			? min($end, $last)
		//			: $last;
		//		if ($start < 0)
		//			$start = $last+$start;
		//		if ($start > $last)
		//			return array();
		if ($end > 0)
			$end = $end - $start;
		return $this->newInstance(
			array_slice($this->elements, $start, $end)
		);
	}
	/**
	 * Enter description here...
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function reverse()
	{
		$this->elementsBackup = $this->elements;
		$this->elements = array_reverse($this->elements);
		return $this->newInstance();
	}
	/**
	 * Return joined text content.
	 * @return String
	 */
	public function text($text = null, $callback1 = null, $callback2 = null, $callback3 = null)
	{
		if (isset($text))
			return $this->html(htmlspecialchars($text));
		$args = func_get_args();
		$args = array_slice($args, 1);
		$return = '';
		foreach ($this->elements as $node) {
			$text = $node->textContent;
			if (count($this->elements) > 1 && $text)
				$text .= "\n";
			foreach ($args as $callback) {
				$text = phpQuery::callbackRun($callback, array($text));
			}
			$return .= $text;
		}
		return $return;
	}
	/**
	 * @return The text content of each matching element, like
	 * text() but returns an array with one entry per matched element.
	 * Read only.
	 */
	public function texts($attr = null)
	{
		$results = array();
		foreach ($this->elements as $node) {
			$results[] = $node->textContent;
		}
		return $results;
	}
	/**
	 * Enter description here...
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function plugin($class, $file = null)
	{
		phpQuery::plugin($class, $file);
		return $this;
	}
	/**
	 * Deprecated, use $pq->plugin() instead.
	 *
	 * @deprecated
	 * @param $class
	 * @param $file
	 * @return unknown_type
	 */
	public static function extend($class, $file = null)
	{
		return $this->plugin($class, $file);
	}
	/**
	 *
	 * @access private
	 * @param $method
	 * @param $args
	 * @return unknown_type
	 */
	public function __call($method, $args)
	{
		$aliasMethods = array('clone', 'empty');
		if (isset(phpQuery::$extendMethods[$method])) {
			array_unshift($args, $this);
			return phpQuery::callbackRun(
				phpQuery::$extendMethods[$method],
				$args
			);
		} else if (isset(phpQuery::$pluginsMethods[$method])) {
			array_unshift($args, $this);
			$class = phpQuery::$pluginsMethods[$method];
			$realClass = "phpQueryObjectPlugin_$class";
			$return = call_user_func_array(
				array($realClass, $method),
				$args
			);
			// XXX deprecate ?
			return is_null($return)
				? $this
				: $return;
		} else if (in_array($method, $aliasMethods)) {
			return call_user_func_array(array($this, '_' . $method), $args);
		} else
			throw new Exception("Method '{$method}' doesnt exist");
	}
	/**
	 * Safe rename of next().
	 *
	 * Use it ONLY when need to call next() on an iterated object (in same time).
	 * Normaly there is no need to do such thing ;)
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 * @access private
	 */
	public function _next($selector = null)
	{
		return $this->newInstance(
			$this->getElementSiblings('nextSibling', $selector, true)
		);
	}
	/**
	 * Use prev() and next().
	 *
	 * @deprecated
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 * @access private
	 */
	public function _prev($selector = null)
	{
		return $this->prev($selector);
	}
	/**
	 * Enter description here...
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function prev($selector = null)
	{
		return $this->newInstance(
			$this->getElementSiblings('previousSibling', $selector, true)
		);
	}
	/**
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 * @todo
	 */
	public function prevAll($selector = null)
	{
		return $this->newInstance(
			$this->getElementSiblings('previousSibling', $selector)
		);
	}
	/**
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 * @todo FIXME: returns source elements insted of next siblings
	 */
	public function nextAll($selector = null)
	{
		return $this->newInstance(
			$this->getElementSiblings('nextSibling', $selector)
		);
	}
	/**
	 * @access private
	 */
	protected function getElementSiblings($direction, $selector = null, $limitToOne = false)
	{
		$stack = array();
		$count = 0;
		foreach ($this->stack() as $node) {
			$test = $node;
			while (isset($test->{$direction}) && $test->{$direction}) {
				$test = $test->{$direction};
				if (!$test instanceof DOMELEMENT)
					continue;
				$stack[] = $test;
				if ($limitToOne)
					break;
			}
		}
		if ($selector) {
			$stackOld = $this->elements;
			$this->elements = $stack;
			$stack = $this->filter($selector, true)->stack();
			$this->elements = $stackOld;
		}
		return $stack;
	}
	/**
	 * Enter description here...
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function siblings($selector = null)
	{
		$stack = array();
		$siblings = array_merge(
			$this->getElementSiblings('previousSibling', $selector),
			$this->getElementSiblings('nextSibling', $selector)
		);
		foreach ($siblings as $node) {
			if (!$this->elementsContainsNode($node, $stack))
				$stack[] = $node;
		}
		return $this->newInstance($stack);
	}
	/**
	 * Enter description here...
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function not($selector = null)
	{
		if (is_string($selector))
			phpQuery::debug(array('not', $selector));
		else
			phpQuery::debug('not');
		$stack = array();
		if ($selector instanceof self || $selector instanceof DOMNODE) {
			foreach ($this->stack() as $node) {
				if ($selector instanceof self) {
					$matchFound = false;
					foreach ($selector->stack() as $notNode) {
						if ($notNode->isSameNode($node))
							$matchFound = true;
					}
					if (!$matchFound)
						$stack[] = $node;
				} else if ($selector instanceof DOMNODE) {
					if (!$selector->isSameNode($node))
						$stack[] = $node;
				} else {
					if (!$this->is($selector))
						$stack[] = $node;
				}
			}
		} else {
			$orgStack = $this->stack();
			$matched = $this->filter($selector, true)->stack();
			//			$matched = array();
			//			// simulate OR in filter() instead of AND 5y
			//			foreach($this->parseSelector($selector) as $s) {
			//				$matched = array_merge($matched,
			//					$this->filter(array($s))->stack()
			//				);
			//			}
			foreach ($orgStack as $node)
				if (!$this->elementsContainsNode($node, $matched))
					$stack[] = $node;
		}
		return $this->newInstance($stack);
	}
	/**
	 * Enter description here...
	 *
	 * @param string|phpQueryObject
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function add($selector = null)
	{
		if (!$selector)
			return $this;
		$stack = array();
		$this->elementsBackup = $this->elements;
		$found = phpQuery::pq($selector, $this->getDocumentID());
		$this->merge($found->elements);
		return $this->newInstance();
	}
	/**
	 * @access private
	 */
	protected function merge()
	{
		foreach (func_get_args() as $nodes)
			foreach ($nodes as $newNode)
				if (!$this->elementsContainsNode($newNode))
					$this->elements[] = $newNode;
	}
	/**
	 * @access private
	 * TODO refactor to stackContainsNode
	 */
	protected function elementsContainsNode($nodeToCheck, $elementsStack = null)
	{
		$loop = !is_null($elementsStack)
			? $elementsStack
			: $this->elements;
		foreach ($loop as $node) {
			if ($node->isSameNode($nodeToCheck))
				return true;
		}
		return false;
	}
	/**
	 * Enter description here...
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function parent($selector = null)
	{
		$stack = array();
		foreach ($this->elements as $node)
			if ($node->parentNode && !$this->elementsContainsNode($node->parentNode, $stack))
				$stack[] = $node->parentNode;
		$this->elementsBackup = $this->elements;
		$this->elements = $stack;
		if ($selector)
			$this->filter($selector, true);
		return $this->newInstance();
	}
	/**
	 * Enter description here...
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function parents($selector = null)
	{
		$stack = array();
		if (!$this->elements)
			$this->debug('parents() - stack empty');
		foreach ($this->elements as $node) {
			$test = $node;
			while ($test->parentNode) {
				$test = $test->parentNode;
				if ($this->isRoot($test))
					break;
				if (!$this->elementsContainsNode($test, $stack)) {
					$stack[] = $test;
					continue;
				}
			}
		}
		$this->elementsBackup = $this->elements;
		$this->elements = $stack;
		if ($selector)
			$this->filter($selector, true);
		return $this->newInstance();
	}
	/**
	 * Internal stack iterator.
	 *
	 * @access private
	 */
	public function stack($nodeTypes = null)
	{
		if (!isset($nodeTypes))
			return $this->elements;
		if (!is_array($nodeTypes))
			$nodeTypes = array($nodeTypes);
		$return = array();
		foreach ($this->elements as $node) {
			if (in_array($node->nodeType, $nodeTypes))
				$return[] = $node;
		}
		return $return;
	}
	// TODO phpdoc; $oldAttr is result of hasAttribute, before any changes
	protected function attrEvents($attr, $oldAttr, $oldValue, $node)
	{
		// skip events for XML documents
		if (!$this->isXHTML() && !$this->isHTML())
			return;
		$event = null;
		// identify
		$isInputValue = $node->tagName == 'input'
			&& (in_array(
					$node->getAttribute('type'),
					array('text', 'password', 'hidden')
				)
				|| !$node->getAttribute('type')
			);
		$isRadio = $node->tagName == 'input'
			&& $node->getAttribute('type') == 'radio';
		$isCheckbox = $node->tagName == 'input'
			&& $node->getAttribute('type') == 'checkbox';
		$isOption = $node->tagName == 'option';
		if ($isInputValue && $attr == 'value' && $oldValue != $node->getAttribute($attr)) {
			$event = new DOMEvent(array(
				'target' => $node,
				'type' => 'change'
			));
		} else if (($isRadio || $isCheckbox) && $attr == 'checked' && (
			// check
			(!$oldAttr && $node->hasAttribute($attr))
			// un-check
			|| (!$node->hasAttribute($attr) && $oldAttr)
		)) {
			$event = new DOMEvent(array(
				'target' => $node,
				'type' => 'change'
			));
		} else if ($isOption && $node->parentNode && $attr == 'selected' && (
			// select
			(!$oldAttr && $node->hasAttribute($attr))
			// un-select
			|| (!$node->hasAttribute($attr) && $oldAttr)
		)) {
			$event = new DOMEvent(array(
				'target' => $node->parentNode,
				'type' => 'change'
			));
		}
		if ($event) {
			phpQueryEvents::trigger(
				$this->getDocumentID(),
				$event->type,
				array($event),
				$node
			);
		}
	}
	public function attr($attr = null, $value = null)
	{
		foreach ($this->stack(1) as $node) {
			if (!is_null($value)) {
				$loop = $attr == '*'
					? $this->getNodeAttrs($node)
					: array($attr);
				foreach ($loop as $a) {
					$oldValue = $node->getAttribute($a);
					$oldAttr = $node->hasAttribute($a);
					// TODO raises an error when charset other than UTF-8
					// while document's charset is also not UTF-8
					@$node->setAttribute($a, $value);
					$this->attrEvents($a, $oldAttr, $oldValue, $node);
				}
			} else if ($attr == '*') {
				// jQuery difference
				$return = array();
				foreach ($node->attributes as $n => $v)
					$return[$n] = $v->value;
				return $return;
			} else
				return $node->hasAttribute($attr)
					? $node->getAttribute($attr)
					: null;
		}
		return is_null($value)
			? '' : $this;
	}
	/**
	 * @return The same attribute of each matching element, like
	 * attr() but returns an array with one entry per matched element.
	 * Read only.
	 */
	public function attrs($attr = null)
	{
		$results = array();
		foreach ($this->stack(1) as $node) {
			$results[] = $node->hasAttribute($attr)
				? $node->getAttribute($attr)
				: null;
		}
		return $results;
	}
	/**
	 * @access private
	 */
	protected function getNodeAttrs($node)
	{
		$return = array();
		foreach ($node->attributes as $n => $o)
			$return[] = $n;
		return $return;
	}
	/**
	 * Enter description here...
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 * @todo check CDATA ???
	 */
	public function attrPHP($attr, $code)
	{
		if (!is_null($code)) {
			$value = '<' . '?php ' . $code . ' ?' . '>';
			// TODO tempolary solution
			// http://code.google.com/p/phpquery/issues/detail?id=17
			//			if (function_exists('mb_detect_encoding') && mb_detect_encoding($value) == 'ASCII')
			//				$value	= mb_convert_encoding($value, 'UTF-8', 'HTML-ENTITIES');
		}
		foreach ($this->stack(1) as $node) {
			if (!is_null($code)) {
				//				$attrNode = $this->DOM->createAttribute($attr);
				$node->setAttribute($attr, $value);
				//				$attrNode->value = $value;
				//				$node->appendChild($attrNode);
			} else if ($attr == '*') {
				// jQuery diff
				$return = array();
				foreach ($node->attributes as $n => $v)
					$return[$n] = $v->value;
				return $return;
			} else
				return $node->getAttribute($attr);
		}
		return $this;
	}
	/**
	 * Enter description here...
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function removeAttr($attr)
	{
		foreach ($this->stack(1) as $node) {
			$loop = $attr == '*'
				? $this->getNodeAttrs($node)
				: array($attr);
			foreach ($loop as $a) {
				$oldValue = $node->getAttribute($a);
				$node->removeAttribute($a);
				$this->attrEvents($a, $oldValue, null, $node);
			}
		}
		return $this;
	}
	/**
	 * Return form element value.
	 *
	 * @return String Fields value.
	 */
	public function val($val = null)
	{
		if (!isset($val)) {
			if ($this->eq(0)->is('select')) {
				$selected = $this->eq(0)->find('option[selected=selected]');
				if ($selected->is('[value]'))
					return $selected->attr('value');
				else
					return $selected->text();
			} else if ($this->eq(0)->is('textarea'))
				return $this->eq(0)->markup();
			else
				return $this->eq(0)->attr('value');
		} else {
			$_val = null;
			foreach ($this->stack(1) as $node) {
				$node = pq($node, $this->getDocumentID());
				if (is_array($val) && in_array($node->attr('type'), array('checkbox', 'radio'))) {
					$isChecked = in_array($node->attr('value'), $val)
						|| in_array($node->attr('name'), $val);
					if ($isChecked)
						$node->attr('checked', 'checked');
					else
						$node->removeAttr('checked');
				} else if ($node->get(0)->tagName == 'select') {
					if (!isset($_val)) {
						$_val = array();
						if (!is_array($val))
							$_val = array((string)$val);
						else
							foreach ($val as $v)
								$_val[] = $v;
					}
					foreach ($node['option']->stack(1) as $option) {
						$option = pq($option, $this->getDocumentID());
						$selected = false;
						// XXX: workaround for string comparsion, see issue #96
						// http://code.google.com/p/phpquery/issues/detail?id=96
						$selected = is_null($option->attr('value'))
							? in_array($option->markup(), $_val)
							: in_array($option->attr('value'), $_val);
						//						$optionValue = $option->attr('value');
						//						$optionText = $option->text();
						//						$optionTextLenght = mb_strlen($optionText);
						//						foreach($_val as $v)
						//							if ($optionValue == $v)
						//								$selected = true;
						//							else if ($optionText == $v && $optionTextLenght == mb_strlen($v))
						//								$selected = true;
						if ($selected)
							$option->attr('selected', 'selected');
						else
							$option->removeAttr('selected');
					}
				} else if ($node->get(0)->tagName == 'textarea')
					$node->markup($val);
				else
					$node->attr('value', $val);
			}
		}
		return $this;
	}
	/**
	 * Enter description here...
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function andSelf()
	{
		if ($this->previous)
			$this->elements = array_merge($this->elements, $this->previous->elements);
		return $this;
	}
	/**
	 * Enter description here...
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function addClass($className)
	{
		if (!$className)
			return $this;
		foreach ($this->stack(1) as $node) {
			if (!$this->is(".$className", $node))
				$node->setAttribute(
					'class',
					trim($node->getAttribute('class') . ' ' . $className)
				);
		}
		return $this;
	}
	/**
	 * Enter description here...
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function addClassPHP($className)
	{
		foreach ($this->stack(1) as $node) {
			$classes = $node->getAttribute('class');
			$newValue = $classes
				? $classes . ' <' . '?php ' . $className . ' ?' . '>'
				: '<' . '?php ' . $className . ' ?' . '>';
			$node->setAttribute('class', $newValue);
		}
		return $this;
	}
	/**
	 * Enter description here...
	 *
	 * @param	string	$className
	 * @return	bool
	 */
	public function hasClass($className)
	{
		foreach ($this->stack(1) as $node) {
			if ($this->is(".$className", $node))
				return true;
		}
		return false;
	}
	/**
	 * Enter description here...
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function removeClass($className)
	{
		foreach ($this->stack(1) as $node) {
			$classes = explode(' ', $node->getAttribute('class'));
			if (in_array($className, $classes)) {
				$classes = array_diff($classes, array($className));
				if ($classes)
					$node->setAttribute('class', implode(' ', $classes));
				else
					$node->removeAttribute('class');
			}
		}
		return $this;
	}
	/**
	 * Enter description here...
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function toggleClass($className)
	{
		foreach ($this->stack(1) as $node) {
			if ($this->is($node, '.' . $className))
				$this->removeClass($className);
			else
				$this->addClass($className);
		}
		return $this;
	}
	/**
	 * Proper name without underscore (just ->empty()) also works.
	 *
	 * Removes all child nodes from the set of matched elements.
	 *
	 * Example:
	 * pq("p")._empty()
	 *
	 * HTML:
	 * <p>Hello, <span>Person</span> <a href="#">and person</a></p>
	 *
	 * Result:
	 * [ <p></p> ]
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 * @access private
	 */
	public function _empty()
	{
		foreach ($this->stack(1) as $node) {
			// thx to 'dave at dgx dot cz'
			$node->nodeValue = '';
		}
		return $this;
	}
	/**
	 * Enter description here...
	 *
	 * @param array|string $callback Expects $node as first param, $index as second
	 * @param array $scope External variables passed to callback. Use compact('varName1', 'varName2'...) and extract($scope)
	 * @param array $arg1 Will ba passed as third and futher args to callback.
	 * @param array $arg2 Will ba passed as fourth and futher args to callback, and so on...
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function each($callback, $param1 = null, $param2 = null, $param3 = null)
	{
		$paramStructure = null;
		if (func_num_args() > 1) {
			$paramStructure = func_get_args();
			$paramStructure = array_slice($paramStructure, 1);
		}
		foreach ($this->elements as $v)
			phpQuery::callbackRun($callback, array($v), $paramStructure);
		return $this;
	}
	/**
	 * Run callback on actual object.
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public function callback($callback, $param1 = null, $param2 = null, $param3 = null)
	{
		$params = func_get_args();
		$params[0] = $this;
		phpQuery::callbackRun($callback, $params);
		return $this;
	}
	/**
	 * Enter description here...
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 * @todo add $scope and $args as in each() ???
	 */
	public function map($callback, $param1 = null, $param2 = null, $param3 = null)
	{
		//		$stack = array();
		////		foreach($this->newInstance() as $node) {
		//		foreach($this->newInstance() as $node) {
		//			$result = call_user_func($callback, $node);
		//			if ($result)
		//				$stack[] = $result;
		//		}
		$params = func_get_args();
		array_unshift($params, $this->elements);
		return $this->newInstance(
			call_user_func_array(array('phpQuery', 'map'), $params)
			//			phpQuery::map($this->elements, $callback)
		);
	}
	/**
	 * Enter description here...
	 *
	 * @param <type> $key
	 * @param <type> $value
	 */
	public function data($key, $value = null)
	{
		if (!isset($value)) {
			// TODO? implement specific jQuery behavior od returning parent values
			// is child which we look up doesn't exist
			return phpQuery::data($this->get(0), $key, $value, $this->getDocumentID());
		} else {
			foreach ($this as $node)
				phpQuery::data($node, $key, $value, $this->getDocumentID());
			return $this;
		}
	}
	/**
	 * Enter description here...
	 *
	 * @param <type> $key
	 */
	public function removeData($key)
	{
		foreach ($this as $node)
			phpQuery::removeData($node, $key, $this->getDocumentID());
		return $this;
	}
	// INTERFACE IMPLEMENTATIONS

	// ITERATOR INTERFACE
	/**
	 * @access private
	 */
	#[\ReturnTypeWillChange]
	public function rewind()
	{
		$this->debug('iterating foreach');
		//		phpQuery::selectDocument($this->getDocumentID());
		$this->elementsBackup = $this->elements;
		$this->elementsInterator = $this->elements;
		$this->valid = isset($this->elements[0])
			? 1 : 0;
		// 		$this->elements = $this->valid
		// 			? array($this->elements[0])
		// 			: array();
		$this->current = 0;
	}
	/**
	 * @access private
	 */
	#[\ReturnTypeWillChange]
	public function current()
	{
		return $this->elementsInterator[$this->current];
	}
	/**
	 * @access private
	 */
	#[\ReturnTypeWillChange]
	public function key()
	{
		return $this->current;
	}
	/**
	 * Double-function method.
	 *
	 * First: main iterator interface method.
	 * Second: Returning next sibling, alias for _next().
	 *
	 * Proper functionality is choosed automagicaly.
	 *
	 * @see phpQueryObject::_next()
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	#[\ReturnTypeWillChange]
	public function next($cssSelector = null)
	{
		//		if ($cssSelector || $this->valid)
		//			return $this->_next($cssSelector);
		$this->valid = isset($this->elementsInterator[$this->current + 1])
			? true
			: false;
		if (!$this->valid && $this->elementsInterator) {
			$this->elementsInterator = null;
		} else if ($this->valid) {
			$this->current++;
		} else {
			return $this->_next($cssSelector);
		}
	}
	/**
	 * @access private
	 */
	#[\ReturnTypeWillChange]
	public function valid()
	{
		return $this->valid;
	}
	// ITERATOR INTERFACE END
	// ARRAYACCESS INTERFACE
	/**
	 * @access private
	 */
	#[\ReturnTypeWillChange]
	public function offsetExists($offset)
	{
		return $this->find($offset)->size() > 0;
	}
	/**
	 * @access private
	 */
	#[\ReturnTypeWillChange]
	public function offsetGet($offset)
	{
		return $this->find($offset);
	}
	/**
	 * @access private
	 */
	#[\ReturnTypeWillChange]
	public function offsetSet($offset, $value)
	{
		//		$this->find($offset)->replaceWith($value);
		$this->find($offset)->html($value);
	}
	/**
	 * @access private
	 */
	#[\ReturnTypeWillChange]
	public function offsetUnset($offset)
	{
		// empty
		throw new Exception("Can't do unset, use array interface only for calling queries and replacing HTML.");
	}
	// ARRAYACCESS INTERFACE END
	/**
	 * Returns node's XPath.
	 *
	 * @param unknown_type $oneNode
	 * @return string
	 * @TODO use native getNodePath is avaible
	 * @access private
	 */
	protected function getNodeXpath($oneNode = null, $namespace = null)
	{
		$return = array();
		$loop = $oneNode
			? array($oneNode)
			: $this->elements;
		//		if ($namespace)
		//			$namespace .= ':';
		foreach ($loop as $node) {
			if ($node instanceof DOMDOCUMENT) {
				$return[] = '';
				continue;
			}
			$xpath = array();
			while (!($node instanceof DOMDOCUMENT)) {
				$i = 1;
				$sibling = $node;
				while ($sibling->previousSibling) {
					$sibling = $sibling->previousSibling;
					$isElement = $sibling instanceof DOMELEMENT;
					if ($isElement && $sibling->tagName == $node->tagName)
						$i++;
				}
				$xpath[] = $this->isXML()
					? "*[local-name()='{$node->tagName}'][{$i}]"
					: "{$node->tagName}[{$i}]";
				$node = $node->parentNode;
			}
			$xpath = implode('/', array_reverse($xpath));
			$return[] = '/' . $xpath;
		}
		return $oneNode
			? $return[0]
			: $return;
	}
	// HELPERS
	public function whois($oneNode = null)
	{
		$return = array();
		$loop = $oneNode
			? array($oneNode)
			: $this->elements;
		foreach ($loop as $node) {
			if (isset($node->tagName)) {
				$tag = in_array($node->tagName, array('php', 'js'))
					? strtoupper($node->tagName)
					: $node->tagName;
				$return[] = $tag
					. ($node->getAttribute('id')
						? '#' . $node->getAttribute('id') : '')
					. ($node->getAttribute('class')
						? '.' . implode('.', explode(' ', $node->getAttribute('class'))) : '')
					. ($node->getAttribute('name')
						? '[name="' . $node->getAttribute('name') . '"]' : '')
					. ($node->getAttribute('value') && strpos($node->getAttribute('value'), '<' . '?php') === false
						? '[value="' . substr(str_replace("\n", '', $node->getAttribute('value')), 0, 15) . '"]' : '')
					. ($node->getAttribute('value') && strpos($node->getAttribute('value'), '<' . '?php') !== false
						? '[value=PHP]' : '')
					. ($node->getAttribute('selected')
						? '[selected]' : '')
					. ($node->getAttribute('checked')
						? '[checked]' : '');
			} else if ($node instanceof DOMTEXT) {
				if (trim($node->textContent))
					$return[] = 'Text:' . substr(str_replace("\n", ' ', $node->textContent), 0, 15);
			} else {
			}
		}
		return $oneNode && isset($return[0])
			? $return[0]
			: $return;
	}
	/**
	 * Dump htmlOuter and preserve chain. Usefull for debugging.
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 *
	 */
	public function dump()
	{
		print 'DUMP #' . (phpQuery::$dumpCount++) . ' ';
		$debug = phpQuery::$debug;
		phpQuery::$debug = false;
		//		print __FILE__.':'.__LINE__."\n";
		var_dump($this->htmlOuter());
		return $this;
	}
	public function dumpWhois()
	{
		print 'DUMP #' . (phpQuery::$dumpCount++) . ' ';
		$debug = phpQuery::$debug;
		phpQuery::$debug = false;
		//		print __FILE__.':'.__LINE__."\n";
		var_dump('whois', $this->whois());
		phpQuery::$debug = $debug;
		return $this;
	}
	public function dumpLength()
	{
		print 'DUMP #' . (phpQuery::$dumpCount++) . ' ';
		$debug = phpQuery::$debug;
		phpQuery::$debug = false;
		//		print __FILE__.':'.__LINE__."\n";
		var_dump('length', $this->length());
		phpQuery::$debug = $debug;
		return $this;
	}
	public function dumpTree($html = true, $title = true)
	{
		$output = $title
			? 'DUMP #' . (phpQuery::$dumpCount++) . " \n" : '';
		$debug = phpQuery::$debug;
		phpQuery::$debug = false;
		foreach ($this->stack() as $node)
			$output .= $this->__dumpTree($node);
		phpQuery::$debug = $debug;
		print $html
			? nl2br(str_replace(' ', '&nbsp;', $output))
			: $output;
		return $this;
	}
	private function __dumpTree($node, $intend = 0)
	{
		$whois = $this->whois($node);
		$return = '';
		if ($whois)
			$return .= str_repeat(' - ', $intend) . $whois . "\n";
		if (isset($node->childNodes))
			foreach ($node->childNodes as $chNode)
				$return .= $this->__dumpTree($chNode, $intend + 1);
		return $return;
	}
	/**
	 * Dump htmlOuter and stop script execution. Usefull for debugging.
	 *
	 */
	public function dumpDie()
	{
		print __FILE__ . ':' . __LINE__;
		var_dump($this->htmlOuter());
		die();
	}
}


// -- Multibyte Compatibility functions ---------------------------------------
// http://svn.iphonewebdev.com/lace/lib/mb_compat.php

/**
 *  mb_internal_encoding()
 *
 *  Included for mbstring pseudo-compatability.
 */
if (!function_exists('mb_internal_encoding')) {
	function mb_internal_encoding($enc)
	{
		return true;
	}
}

/**
 *  mb_regex_encoding()
 *
 *  Included for mbstring pseudo-compatability.
 */
if (!function_exists('mb_regex_encoding')) {
	function mb_regex_encoding($enc)
	{
		return true;
	}
}

/**
 *  mb_strlen()
 *
 *  Included for mbstring pseudo-compatability.
 */
if (!function_exists('mb_strlen')) {
	function mb_strlen($str)
	{
		return strlen($str);
	}
}

/**
 *  mb_strpos()
 *
 *  Included for mbstring pseudo-compatability.
 */
if (!function_exists('mb_strpos')) {
	function mb_strpos($haystack, $needle, $offset = 0)
	{
		return strpos($haystack, $needle, $offset);
	}
}
/**
 *  mb_stripos()
 *
 *  Included for mbstring pseudo-compatability.
 */
if (!function_exists('mb_stripos')) {
	function mb_stripos($haystack, $needle, $offset = 0)
	{
		return stripos($haystack, $needle, $offset);
	}
}

/**
 *  mb_substr()
 *
 *  Included for mbstring pseudo-compatability.
 */
if (!function_exists('mb_substr')) {
	function mb_substr($str, $start, $length = 0)
	{
		return substr($str, $start, $length);
	}
}

/**
 *  mb_substr_count()
 *
 *  Included for mbstring pseudo-compatability.
 */
if (!function_exists('mb_substr_count')) {
	function mb_substr_count($haystack, $needle)
	{
		return substr_count($haystack, $needle);
	}
}


/**
 * Static namespace for phpQuery functions.
 *
 * @author Tobiasz Cudnik <tobiasz.cudnik/gmail.com>
 * @package phpQuery
 */
abstract class phpQuery
{
	/**
	 * XXX: Workaround for mbstring problems
	 *
	 * @var bool
	 */
	public static $mbstringSupport = true;
	public static $debug = false;
	public static $documents = array();
	public static $defaultDocumentID = null;
	//	public static $defaultDoctype = 'html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"';
	/**
	 * Applies only to HTML.
	 *
	 * @var unknown_type
	 */
	public static $defaultDoctype = '<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">';
	public static $defaultCharset = 'UTF-8';
	/**
	 * Static namespace for plugins.
	 *
	 * @var object
	 */
	public static $plugins = array();
	/**
	 * List of loaded plugins.
	 *
	 * @var unknown_type
	 */
	public static $pluginsLoaded = array();
	public static $pluginsMethods = array();
	public static $pluginsStaticMethods = array();
	public static $extendMethods = array();
	/**
	 * @TODO implement
	 */
	public static $extendStaticMethods = array();
	/**
	 * Hosts allowed for AJAX connections.
	 * Dot '.' means $_SERVER['HTTP_HOST'] (if any).
	 *
	 * @var array
	 */
	public static $ajaxAllowedHosts = array(
		'.'
	);
	/**
	 * AJAX settings.
	 *
	 * @var array
	 * XXX should it be static or not ?
	 */
	public static $ajaxSettings = array(
		'url' => '', //TODO
		'global' => true,
		'type' => "GET",
		'timeout' => null,
		'contentType' => "application/x-www-form-urlencoded",
		'processData' => true,
		//		'async' => true,
		'data' => null,
		'username' => null,
		'password' => null,
		'accepts' => array(
			'xml' => "application/xml, text/xml",
			'html' => "text/html",
			'script' => "text/javascript, application/javascript",
			'json' => "application/json, text/javascript",
			'text' => "text/plain",
			'_default' => "*/*"
		)
	);
	public static $lastModified = null;
	public static $active = 0;
	public static $dumpCount = 0;
	/**
	 * Multi-purpose function.
	 * Use pq() as shortcut.
	 *
	 * In below examples, $pq is any result of pq(); function.
	 *
	 * 1. Import markup into existing document (without any attaching):
	 * - Import into selected document:
	 *   pq('<div/>')				// DOESNT accept text nodes at beginning of input string !
	 * - Import into document with ID from $pq->getDocumentID():
	 *   pq('<div/>', $pq->getDocumentID())
	 * - Import into same document as DOMNode belongs to:
	 *   pq('<div/>', DOMNode)
	 * - Import into document from phpQuery object:
	 *   pq('<div/>', $pq)
	 *
	 * 2. Run query:
	 * - Run query on last selected document:
	 *   pq('div.myClass')
	 * - Run query on document with ID from $pq->getDocumentID():
	 *   pq('div.myClass', $pq->getDocumentID())
	 * - Run query on same document as DOMNode belongs to and use node(s)as root for query:
	 *   pq('div.myClass', DOMNode)
	 * - Run query on document from phpQuery object
	 *   and use object's stack as root node(s) for query:
	 *   pq('div.myClass', $pq)
	 *
	 * @param string|DOMNode|DOMNodeList|array	$arg1	HTML markup, CSS Selector, DOMNode or array of DOMNodes
	 * @param string|phpQueryObject|DOMNode	$context	DOM ID from $pq->getDocumentID(), phpQuery object (determines also query root) or DOMNode (determines also query root)
	 *
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery|QueryTemplatesPhpQuery|false
	 * phpQuery object or false in case of error.
	 */
	public static function pq($arg1, $context = null)
	{
		if ($arg1 instanceof DOMNODE && !isset($context)) {
			foreach (phpQuery::$documents as $documentWrapper) {
				$compare = $arg1 instanceof DOMDocument
					? $arg1 : $arg1->ownerDocument;
				if ($documentWrapper->document->isSameNode($compare))
					$context = $documentWrapper->id;
			}
		}
		if (!$context) {
			$domId = self::$defaultDocumentID;
			if (!$domId)
				throw new Exception("Can't use last created DOM, because there isn't any. Use phpQuery::newDocument() first.");
			//		} else if (is_object($context) && ($context instanceof PHPQUERY || is_subclass_of($context, 'phpQueryObject')))
		} else if (is_object($context) && $context instanceof phpQueryObject)
			$domId = $context->getDocumentID();
		else if ($context instanceof DOMDOCUMENT) {
			$domId = self::getDocumentID($context);
			if (!$domId) {
				//throw new Exception('Orphaned DOMDocument');
				$domId = self::newDocument($context)->getDocumentID();
			}
		} else if ($context instanceof DOMNODE) {
			$domId = self::getDocumentID($context);
			if (!$domId) {
				throw new Exception('Orphaned DOMNode');
				//				$domId = self::newDocument($context->ownerDocument);
			}
		} else
			$domId = $context;
		if ($arg1 instanceof phpQueryObject) {
			//		if (is_object($arg1) && (get_class($arg1) == 'phpQueryObject' || $arg1 instanceof PHPQUERY || is_subclass_of($arg1, 'phpQueryObject'))) {
			/**
			 * Return $arg1 or import $arg1 stack if document differs:
			 * pq(pq('<div/>'))
			 */
			if ($arg1->getDocumentID() == $domId)
				return $arg1;
			$class = get_class($arg1);
			// support inheritance by passing old object to overloaded constructor
			$phpQuery = $class != 'phpQuery'
				? new $class($arg1, $domId)
				: new phpQueryObject($domId);
			$phpQuery->elements = array();
			foreach ($arg1->elements as $node)
				$phpQuery->elements[] = $phpQuery->document->importNode($node, true);
			return $phpQuery;
		} else if ($arg1 instanceof DOMNODE || (is_array($arg1) && isset($arg1[0]) && $arg1[0] instanceof DOMNODE)) {
			/*
			 * Wrap DOM nodes with phpQuery object, import into document when needed:
			 * pq(array($domNode1, $domNode2))
			 */
			$phpQuery = new phpQueryObject($domId);
			if (!($arg1 instanceof DOMNODELIST) && !is_array($arg1))
				$arg1 = array($arg1);
			$phpQuery->elements = array();
			foreach ($arg1 as $node) {
				$sameDocument = $node->ownerDocument instanceof DOMDOCUMENT
					&& !$node->ownerDocument->isSameNode($phpQuery->document);
				$phpQuery->elements[] = $sameDocument
					? $phpQuery->document->importNode($node, true)
					: $node;
			}
			return $phpQuery;
		} else if (self::isMarkup($arg1)) {
			/**
			 * Import HTML:
			 * pq('<div/>')
			 */
			$phpQuery = new phpQueryObject($domId);
			return $phpQuery->newInstance(
				$phpQuery->documentWrapper->import($arg1)
			);
		} else {
			/**
			 * Run CSS query:
			 * pq('div.myClass')
			 */
			$phpQuery = new phpQueryObject($domId);
			//			if ($context && ($context instanceof PHPQUERY || is_subclass_of($context, 'phpQueryObject')))
			if ($context && $context instanceof phpQueryObject)
				$phpQuery->elements = $context->elements;
			else if ($context && $context instanceof DOMNODELIST) {
				$phpQuery->elements = array();
				foreach ($context as $node)
					$phpQuery->elements[] = $node;
			} else if ($context && $context instanceof DOMNODE)
				$phpQuery->elements = array($context);
			return $phpQuery->find($arg1);
		}
	}
	/**
	 * Sets default document to $id. Document has to be loaded prior
	 * to using this method.
	 * $id can be retrived via getDocumentID() or getDocumentIDRef().
	 *
	 * @param unknown_type $id
	 */
	public static function selectDocument($id)
	{
		$id = self::getDocumentID($id);
		self::debug("Selecting document '$id' as default one");
		self::$defaultDocumentID = self::getDocumentID($id);
	}
	/**
	 * Returns document with id $id or last used as phpQueryObject.
	 * $id can be retrived via getDocumentID() or getDocumentIDRef().
	 * Chainable.
	 *
	 * @see phpQuery::selectDocument()
	 * @param unknown_type $id
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public static function getDocument($id = null)
	{
		if ($id)
			phpQuery::selectDocument($id);
		else
			$id = phpQuery::$defaultDocumentID;
		return new phpQueryObject($id);
	}
	/**
	 * Creates new document from markup.
	 * Chainable.
	 *
	 * @param unknown_type $markup
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public static function newDocument($markup = null, $contentType = null)
	{
		if (!$markup)
			$markup = '';
		$documentID = phpQuery::createDocumentWrapper($markup, $contentType);
		return new phpQueryObject($documentID);
	}
	/**
	 * Creates new document from markup.
	 * Chainable.
	 *
	 * @param unknown_type $markup
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public static function newDocumentHTML($markup = null, $charset = null)
	{
		$contentType = $charset
			? ";charset=$charset"
			: '';
		return self::newDocument($markup, "text/html{$contentType}");
	}
	/**
	 * Creates new document from markup.
	 * Chainable.
	 *
	 * @param unknown_type $markup
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public static function newDocumentXML($markup = null, $charset = null)
	{
		$contentType = $charset
			? ";charset=$charset"
			: '';
		return self::newDocument($markup, "text/xml{$contentType}");
	}
	/**
	 * Creates new document from markup.
	 * Chainable.
	 *
	 * @param unknown_type $markup
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public static function newDocumentXHTML($markup = null, $charset = null)
	{
		$contentType = $charset
			? ";charset=$charset"
			: '';
		return self::newDocument($markup, "application/xhtml+xml{$contentType}");
	}
	/**
	 * Creates new document from markup.
	 * Chainable.
	 *
	 * @param unknown_type $markup
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public static function newDocumentPHP($markup = null, $contentType = "text/html")
	{
		// TODO pass charset to phpToMarkup if possible (use DOMDocumentWrapper function)
		$markup = phpQuery::phpToMarkup($markup, self::$defaultCharset);
		return self::newDocument($markup, $contentType);
	}
	public static function phpToMarkup($php, $charset = 'utf-8')
	{
		$regexes = array(
			'@(<(?!\\?)(?:[^>]|\\?>)+\\w+\\s*=\\s*)(\')([^\']*)<' . '?php?(.*?)(?:\\?>)([^\']*)\'@s',
			'@(<(?!\\?)(?:[^>]|\\?>)+\\w+\\s*=\\s*)(")([^"]*)<' . '?php?(.*?)(?:\\?>)([^"]*)"@s',
		);
		foreach ($regexes as $regex)
			while (preg_match($regex, $php, $matches)) {
				$php = preg_replace_callback(
					$regex,
					//					create_function('$m, $charset = "'.$charset.'"',
					//						'return $m[1].$m[2]
					//							.htmlspecialchars("<"."?php".$m[4]."?".">", ENT_QUOTES|ENT_NOQUOTES, $charset)
					//							.$m[5].$m[2];'
					//					),
					array('phpQuery', '_phpToMarkupCallback'),
					$php
				);
			}
		$regex = '@(^|>[^<]*)+?(<\?php(.*?)(\?>))@s';
		//preg_match_all($regex, $php, $matches);
		//var_dump($matches);
		$php = preg_replace($regex, '\\1<php><!-- \\3 --></php>', $php);
		return $php;
	}
	public static function _phpToMarkupCallback($php, $charset = 'utf-8')
	{
		return $m[1] . $m[2]
			. htmlspecialchars("<" . "?php" . $m[4] . "?" . ">", ENT_QUOTES | ENT_NOQUOTES, $charset)
			. $m[5] . $m[2];
	}
	public static function _markupToPHPCallback($m)
	{
		return "<" . "?php " . htmlspecialchars_decode($m[1]) . " ?" . ">";
	}
	/**
	 * Converts document markup containing PHP code generated by phpQuery::php()
	 * into valid (executable) PHP code syntax.
	 *
	 * @param string|phpQueryObject $content
	 * @return string PHP code.
	 */
	public static function markupToPHP($content)
	{
		if ($content instanceof phpQueryObject)
			$content = $content->markupOuter();
		/* <php>...</php> to <?php...? > */
		$content = preg_replace_callback(
			'@<php>\s*<!--(.*?)-->\s*</php>@s',
			//			create_function('$m',
			//				'return "<'.'?php ".htmlspecialchars_decode($m[1])." ?'.'>";'
			//			),
			array('phpQuery', '_markupToPHPCallback'),
			$content
		);
		/* <node attr='< ?php ? >'> extra space added to save highlighters */
		$regexes = array(
			'@(<(?!\\?)(?:[^>]|\\?>)+\\w+\\s*=\\s*)(\')([^\']*)(?:&lt;|%3C)\\?(?:php)?(.*?)(?:\\?(?:&gt;|%3E))([^\']*)\'@s',
			'@(<(?!\\?)(?:[^>]|\\?>)+\\w+\\s*=\\s*)(")([^"]*)(?:&lt;|%3C)\\?(?:php)?(.*?)(?:\\?(?:&gt;|%3E))([^"]*)"@s',
		);
		foreach ($regexes as $regex)
			while (preg_match($regex, $content))
				$content = preg_replace_callback(
					$regex,
					function ($m) {
						return $m[1] . $m[2] . $m[3] . "<?php "
							. str_replace(
								array("%20", "%3E", "%09", "&#10;", "&#9;", "%7B", "%24", "%7D", "%22", "%5B", "%5D"),
								array(" ", ">", "	", "\n", "	", "{", "$", "}", '"', "[", "]"),
								htmlspecialchars_decode($m[4])
							)
							. " ?>" . $m[5] . $m[2];
					},
					$content
				);
		return $content;
	}
	/**
	 * Creates new document from file $file.
	 * Chainable.
	 *
	 * @param string $file URLs allowed. See File wrapper page at php.net for more supported sources.
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public static function newDocumentFile($file, $contentType = null)
	{
		$documentID = self::createDocumentWrapper(
			file_get_contents($file),
			$contentType
		);
		return new phpQueryObject($documentID);
	}
	/**
	 * Creates new document from markup.
	 * Chainable.
	 *
	 * @param unknown_type $markup
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public static function newDocumentFileHTML($file, $charset = null)
	{
		$contentType = $charset
			? ";charset=$charset"
			: '';
		return self::newDocumentFile($file, "text/html{$contentType}");
	}
	/**
	 * Creates new document from markup.
	 * Chainable.
	 *
	 * @param unknown_type $markup
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public static function newDocumentFileXML($file, $charset = null)
	{
		$contentType = $charset
			? ";charset=$charset"
			: '';
		return self::newDocumentFile($file, "text/xml{$contentType}");
	}
	/**
	 * Creates new document from markup.
	 * Chainable.
	 *
	 * @param unknown_type $markup
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public static function newDocumentFileXHTML($file, $charset = null)
	{
		$contentType = $charset
			? ";charset=$charset"
			: '';
		return self::newDocumentFile($file, "application/xhtml+xml{$contentType}");
	}
	/**
	 * Creates new document from markup.
	 * Chainable.
	 *
	 * @param unknown_type $markup
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 */
	public static function newDocumentFilePHP($file, $contentType = null)
	{
		return self::newDocumentPHP(file_get_contents($file), $contentType);
	}
	/**
	 * Reuses existing DOMDocument object.
	 * Chainable.
	 *
	 * @param $document DOMDocument
	 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
	 * @TODO support DOMDocument
	 */
	public static function loadDocument($document)
	{
		// TODO
		die('TODO loadDocument');
	}
	/**
	 * Enter description here...
	 *
	 * @param unknown_type $html
	 * @param unknown_type $domId
	 * @return unknown New DOM ID
	 * @todo support PHP tags in input
	 * @todo support passing DOMDocument object from self::loadDocument
	 */
	protected static function createDocumentWrapper($html, $contentType = null, $documentID = null)
	{
		if (function_exists('domxml_open_mem'))
			throw new Exception("Old PHP4 DOM XML extension detected. phpQuery won't work until this extension is enabled.");
		//		$id = $documentID
		//			? $documentID
		//			: md5(microtime());
		$document = null;
		if ($html instanceof DOMDOCUMENT) {
			if (self::getDocumentID($html)) {
				// document already exists in phpQuery::$documents, make a copy
				$document = clone $html;
			} else {
				// new document, add it to phpQuery::$documents
				$wrapper = new DOMDocumentWrapper($html, $contentType, $documentID);
			}
		} else {
			$wrapper = new DOMDocumentWrapper($html, $contentType, $documentID);
		}
		//		$wrapper->id = $id;
		// bind document
		phpQuery::$documents[$wrapper->id] = $wrapper;
		// remember last loaded document
		phpQuery::selectDocument($wrapper->id);
		return $wrapper->id;
	}
	/**
	 * Extend class namespace.
	 *
	 * @param string|array $target
	 * @param array $source
	 * @TODO support string $source
	 * @return unknown_type
	 */
	public static function extend($target, $source)
	{
		switch ($target) {
			case 'phpQueryObject':
				$targetRef = &self::$extendMethods;
				$targetRef2 = &self::$pluginsMethods;
				break;
			case 'phpQuery':
				$targetRef = &self::$extendStaticMethods;
				$targetRef2 = &self::$pluginsStaticMethods;
				break;
			default:
				throw new Exception("Unsupported \$target type");
		}
		if (is_string($source))
			$source = array($source => $source);
		foreach ($source as $method => $callback) {
			if (isset($targetRef[$method])) {
				//				throw new Exception
				self::debug("Duplicate method '{$method}', can\'t extend '{$target}'");
				continue;
			}
			if (isset($targetRef2[$method])) {
				//				throw new Exception
				self::debug("Duplicate method '{$method}' from plugin '{$targetRef2[$method]}',"
					. " can\'t extend '{$target}'");
				continue;
			}
			$targetRef[$method] = $callback;
		}
		return true;
	}
	/**
	 * Extend phpQuery with $class from $file.
	 *
	 * @param string $class Extending class name. Real class name can be prepended phpQuery_.
	 * @param string $file Filename to include. Defaults to "{$class}.php".
	 */
	public static function plugin($class, $file = null)
	{
		// TODO $class checked agains phpQuery_$class
		//		if (strpos($class, 'phpQuery') === 0)
		//			$class = substr($class, 8);
		if (in_array($class, self::$pluginsLoaded))
			return true;
		if (!$file)
			$file = $class . '.php';
		$objectClassExists = class_exists('phpQueryObjectPlugin_' . $class);
		$staticClassExists = class_exists('phpQueryPlugin_' . $class);
		if (!$objectClassExists && !$staticClassExists)
			require_once($file);
		self::$pluginsLoaded[] = $class;
		// static methods
		if (class_exists('phpQueryPlugin_' . $class)) {
			$realClass = 'phpQueryPlugin_' . $class;
			$vars = get_class_vars($realClass);
			$loop = isset($vars['phpQueryMethods'])
				&& !is_null($vars['phpQueryMethods'])
				? $vars['phpQueryMethods']
				: get_class_methods($realClass);
			foreach ($loop as $method) {
				if ($method == '__initialize')
					continue;
				if (!is_callable(array($realClass, $method)))
					continue;
				if (isset(self::$pluginsStaticMethods[$method])) {
					throw new Exception("Duplicate method '{$method}' from plugin '{$c}' conflicts with same method from plugin '" . self::$pluginsStaticMethods[$method] . "'");
					return;
				}
				self::$pluginsStaticMethods[$method] = $class;
			}
			if (method_exists($realClass, '__initialize'))
				call_user_func_array(array($realClass, '__initialize'), array());
		}
		// object methods
		if (class_exists('phpQueryObjectPlugin_' . $class)) {
			$realClass = 'phpQueryObjectPlugin_' . $class;
			$vars = get_class_vars($realClass);
			$loop = isset($vars['phpQueryMethods'])
				&& !is_null($vars['phpQueryMethods'])
				? $vars['phpQueryMethods']
				: get_class_methods($realClass);
			foreach ($loop as $method) {
				if (!is_callable(array($realClass, $method)))
					continue;
				if (isset(self::$pluginsMethods[$method])) {
					throw new Exception("Duplicate method '{$method}' from plugin '{$c}' conflicts with same method from plugin '" . self::$pluginsMethods[$method] . "'");
					continue;
				}
				self::$pluginsMethods[$method] = $class;
			}
		}
		return true;
	}
	/**
	 * Unloades all or specified document from memory.
	 *
	 * @param mixed $documentID @see phpQuery::getDocumentID() for supported types.
	 */
	public static function unloadDocuments($id = null)
	{
		if (isset($id)) {
			if ($id = self::getDocumentID($id))
				unset(phpQuery::$documents[$id]);
		} else {
			foreach (phpQuery::$documents as $k => $v) {
				unset(phpQuery::$documents[$k]);
			}
		}
	}
	/**
	 * Parses phpQuery object or HTML result against PHP tags and makes them active.
	 *
	 * @param phpQuery|string $content
	 * @deprecated
	 * @return string
	 */
	public static function unsafePHPTags($content)
	{
		return self::markupToPHP($content);
	}
	public static function DOMNodeListToArray($DOMNodeList)
	{
		$array = array();
		if (!$DOMNodeList)
			return $array;
		foreach ($DOMNodeList as $node)
			$array[] = $node;
		return $array;
	}
	/**
	 * Checks if $input is HTML string, which has to start with '<'.
	 *
	 * @deprecated
	 * @param String $input
	 * @return Bool
	 * @todo still used ?
	 */
	public static function isMarkup($input)
	{
		return !is_array($input) && substr(trim($input), 0, 1) == '<';
	}
	public static function debug($text)
	{
		if (self::$debug)
			print var_dump($text);
	}
	/**
	 * Make an AJAX request.
	 *
	 * @param array See $options http://docs.jquery.com/Ajax/jQuery.ajax#toptions
	 * Additional options are:
	 * 'document' - document for global events, @see phpQuery::getDocumentID()
	 * 'referer' - implemented
	 * 'requested_with' - TODO; not implemented (X-Requested-With)
	 * @return Zend_Http_Client
	 * @link http://docs.jquery.com/Ajax/jQuery.ajax
	 *
	 * @TODO $options['cache']
	 * @TODO $options['processData']
	 * @TODO $options['xhr']
	 * @TODO $options['data'] as string
	 * @TODO XHR interface
	 */
	public static function ajax($options = array(), $xhr = null)
	{
		$options = array_merge(
			self::$ajaxSettings,
			$options
		);
		$documentID = isset($options['document'])
			? self::getDocumentID($options['document'])
			: null;
		if ($xhr) {
			// reuse existing XHR object, but clean it up
			$client = $xhr;
			//			$client->setParameterPost(null);
			//			$client->setParameterGet(null);
			$client->setAuth(false);
			$client->setHeaders("If-Modified-Since", null);
			$client->setHeaders("Referer", null);
			$client->resetParameters();
		} else {
			// create new XHR object
			require_once('Zend/Http/Client.php');
			$client = new Zend_Http_Client();
			$client->setCookieJar();
		}
		if (isset($options['timeout']))
			$client->setConfig(array(
				'timeout'      => $options['timeout'],
			));
		//			'maxredirects' => 0,
		foreach (self::$ajaxAllowedHosts as $k => $host)
			if ($host == '.' && isset($_SERVER['HTTP_HOST']))
				self::$ajaxAllowedHosts[$k] = $_SERVER['HTTP_HOST'];
		$host = parse_url($options['url'], PHP_URL_HOST);
		if (!in_array($host, self::$ajaxAllowedHosts)) {
			throw new Exception("Request not permitted, host '$host' not present in "
				. "phpQuery::\$ajaxAllowedHosts");
		}
		// JSONP
		$jsre = "/=\\?(&|$)/";
		if (isset($options['dataType']) && $options['dataType'] == 'jsonp') {
			$jsonpCallbackParam = $options['jsonp']
				? $options['jsonp'] : 'callback';
			if (strtolower($options['type']) == 'get') {
				if (!preg_match($jsre, $options['url'])) {
					$sep = strpos($options['url'], '?')
						? '&' : '?';
					$options['url'] .= "$sep$jsonpCallbackParam=?";
				}
			} else if ($options['data']) {
				$jsonp = false;
				foreach ($options['data'] as $n => $v) {
					if ($v == '?')
						$jsonp = true;
				}
				if (!$jsonp) {
					$options['data'][$jsonpCallbackParam] = '?';
				}
			}
			$options['dataType'] = 'json';
		}
		if (isset($options['dataType']) && $options['dataType'] == 'json') {
			$jsonpCallback = 'json_' . md5(microtime());
			$jsonpData = $jsonpUrl = false;
			if ($options['data']) {
				foreach ($options['data'] as $n => $v) {
					if ($v == '?')
						$jsonpData = $n;
				}
			}
			if (preg_match($jsre, $options['url']))
				$jsonpUrl = true;
			if ($jsonpData !== false || $jsonpUrl) {
				// remember callback name for httpData()
				$options['_jsonp'] = $jsonpCallback;
				if ($jsonpData !== false)
					$options['data'][$jsonpData] = $jsonpCallback;
				if ($jsonpUrl)
					$options['url'] = preg_replace($jsre, "=$jsonpCallback\\1", $options['url']);
			}
		}
		$client->setUri($options['url']);
		$client->setMethod(strtoupper($options['type']));
		if (isset($options['referer']) && $options['referer'])
			$client->setHeaders('Referer', $options['referer']);
		$client->setHeaders(array(
			//			'content-type' => $options['contentType'],
			'User-Agent' => 'Mozilla/5.0 (X11; U; Linux x86; en-US; rv:1.9.0.5) Gecko'
				. '/2008122010 Firefox/3.0.5',
			// TODO custom charset
			'Accept-Charset' => 'ISO-8859-1,utf-8;q=0.7,*;q=0.7',
			// 	 		'Connection' => 'keep-alive',
			// 			'Accept' => 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
			'Accept-Language' => 'en-us,en;q=0.5',
		));
		if ($options['username'])
			$client->setAuth($options['username'], $options['password']);
		if (isset($options['ifModified']) && $options['ifModified'])
			$client->setHeaders(
				"If-Modified-Since",
				self::$lastModified
					? self::$lastModified
					: "Thu, 01 Jan 1970 00:00:00 GMT"
			);
		$client->setHeaders(
			"Accept",
			isset($options['dataType'])
				&& isset(self::$ajaxSettings['accepts'][$options['dataType']])
				? self::$ajaxSettings['accepts'][$options['dataType']] . ", */*"
				: self::$ajaxSettings['accepts']['_default']
		);
		// TODO $options['processData']
		if ($options['data'] instanceof phpQueryObject) {
			$serialized = $options['data']->serializeArray($options['data']);
			$options['data'] = array();
			foreach ($serialized as $r)
				$options['data'][$r['name']] = $r['value'];
		}
		if (strtolower($options['type']) == 'get') {
			$client->setParameterGet($options['data']);
		} else if (strtolower($options['type']) == 'post') {
			$client->setEncType($options['contentType']);
			$client->setParameterPost($options['data']);
		}
		if (self::$active == 0 && $options['global'])
			phpQueryEvents::trigger($documentID, 'ajaxStart');
		self::$active++;
		// beforeSend callback
		if (isset($options['beforeSend']) && $options['beforeSend'])
			phpQuery::callbackRun($options['beforeSend'], array($client));
		// ajaxSend event
		if ($options['global'])
			phpQueryEvents::trigger($documentID, 'ajaxSend', array($client, $options));
		if (phpQuery::$debug) {
			self::debug("{$options['type']}: {$options['url']}\n");
			self::debug("Options: <pre>" . var_export($options, true) . "</pre>\n");
			//			if ($client->getCookieJar())
			//				self::debug("Cookies: <pre>".var_export($client->getCookieJar()->getMatchingCookies($options['url']), true)."</pre>\n");
		}
		// request
		$response = $client->request();
		if (phpQuery::$debug) {
			self::debug('Status: ' . $response->getStatus() . ' / ' . $response->getMessage());
			self::debug($client->getLastRequest());
			self::debug($response->getHeaders());
		}
		if ($response->isSuccessful()) {
			// XXX tempolary
			self::$lastModified = $response->getHeader('Last-Modified');
			$data = self::httpData($response->getBody(), $options['dataType'], $options);
			if (isset($options['success']) && $options['success'])
				phpQuery::callbackRun($options['success'], array($data, $response->getStatus(), $options));
			if ($options['global'])
				phpQueryEvents::trigger($documentID, 'ajaxSuccess', array($client, $options));
		} else {
			if (isset($options['error']) && $options['error'])
				phpQuery::callbackRun($options['error'], array($client, $response->getStatus(), $response->getMessage()));
			if ($options['global'])
				phpQueryEvents::trigger($documentID, 'ajaxError', array($client, /*$response->getStatus(),*/ $response->getMessage(), $options));
		}
		if (isset($options['complete']) && $options['complete'])
			phpQuery::callbackRun($options['complete'], array($client, $response->getStatus()));
		if ($options['global'])
			phpQueryEvents::trigger($documentID, 'ajaxComplete', array($client, $options));
		if ($options['global'] && !--self::$active)
			phpQueryEvents::trigger($documentID, 'ajaxStop');
		return $client;
		//		if (is_null($domId))
		//			$domId = self::$defaultDocumentID ? self::$defaultDocumentID : false;
		//		return new phpQueryAjaxResponse($response, $domId);
	}
	protected static function httpData($data, $type, $options)
	{
		if (isset($options['dataFilter']) && $options['dataFilter'])
			$data = self::callbackRun($options['dataFilter'], array($data, $type));
		if (is_string($data)) {
			if ($type == "json") {
				if (isset($options['_jsonp']) && $options['_jsonp']) {
					$data = preg_replace('/^\s*\w+\((.*)\)\s*$/s', '$1', $data);
				}
				$data = self::parseJSON($data);
			}
		}
		return $data;
	}
	/**
	 * Enter description here...
	 *
	 * @param array|phpQuery $data
	 *
	 */
	public static function param($data)
	{
		return http_build_query($data, null, '&');
	}
	public static function get($url, $data = null, $callback = null, $type = null)
	{
		if (!is_array($data)) {
			$callback = $data;
			$data = null;
		}
		// TODO some array_values on this shit
		return phpQuery::ajax(array(
			'type' => 'GET',
			'url' => $url,
			'data' => $data,
			'success' => $callback,
			'dataType' => $type,
		));
	}
	public static function post($url, $data = null, $callback = null, $type = null)
	{
		if (!is_array($data)) {
			$callback = $data;
			$data = null;
		}
		return phpQuery::ajax(array(
			'type' => 'POST',
			'url' => $url,
			'data' => $data,
			'success' => $callback,
			'dataType' => $type,
		));
	}
	public static function getJSON($url, $data = null, $callback = null)
	{
		if (!is_array($data)) {
			$callback = $data;
			$data = null;
		}
		// TODO some array_values on this shit
		return phpQuery::ajax(array(
			'type' => 'GET',
			'url' => $url,
			'data' => $data,
			'success' => $callback,
			'dataType' => 'json',
		));
	}
	public static function ajaxSetup($options)
	{
		self::$ajaxSettings = array_merge(
			self::$ajaxSettings,
			$options
		);
	}
	public static function ajaxAllowHost($host1, $host2 = null, $host3 = null)
	{
		$loop = is_array($host1)
			? $host1
			: func_get_args();
		foreach ($loop as $host) {
			if ($host && !in_array($host, phpQuery::$ajaxAllowedHosts)) {
				phpQuery::$ajaxAllowedHosts[] = $host;
			}
		}
	}
	public static function ajaxAllowURL($url1, $url2 = null, $url3 = null)
	{
		$loop = is_array($url1)
			? $url1
			: func_get_args();
		foreach ($loop as $url)
			phpQuery::ajaxAllowHost(parse_url($url, PHP_URL_HOST));
	}
	/**
	 * Returns JSON representation of $data.
	 *
	 * @static
	 * @param mixed $data
	 * @return string
	 */
	public static function toJSON($data)
	{
		if (function_exists('json_encode'))
			return json_encode($data);
		require_once('Zend/Json/Encoder.php');
		return Zend_Json_Encoder::encode($data);
	}
	/**
	 * Parses JSON into proper PHP type.
	 *
	 * @static
	 * @param string $json
	 * @return mixed
	 */
	public static function parseJSON($json)
	{
		if (function_exists('json_decode')) {
			$return = json_decode(trim($json), true);
			// json_decode and UTF8 issues
			if (isset($return))
				return $return;
		}
		require_once('Zend/Json/Decoder.php');
		return Zend_Json_Decoder::decode($json);
	}
	/**
	 * Returns source's document ID.
	 *
	 * @param $source DOMNode|phpQueryObject
	 * @return string
	 */
	public static function getDocumentID($source)
	{
		if ($source instanceof DOMDOCUMENT) {
			foreach (phpQuery::$documents as $id => $document) {
				if ($source->isSameNode($document->document))
					return $id;
			}
		} else if ($source instanceof DOMNODE) {
			foreach (phpQuery::$documents as $id => $document) {
				if ($source->ownerDocument->isSameNode($document->document))
					return $id;
			}
		} else if ($source instanceof phpQueryObject)
			return $source->getDocumentID();
		else if (is_string($source) && isset(phpQuery::$documents[$source]))
			return $source;
	}
	/**
	 * Get DOMDocument object related to $source.
	 * Returns null if such document doesn't exist.
	 *
	 * @param $source DOMNode|phpQueryObject|string
	 * @return string
	 */
	public static function getDOMDocument($source)
	{
		if ($source instanceof DOMDOCUMENT)
			return $source;
		$source = self::getDocumentID($source);
		return $source
			? self::$documents[$id]['document']
			: null;
	}

	// UTILITIES
	// http://docs.jquery.com/Utilities

	/**
	 *
	 * @return unknown_type
	 * @link http://docs.jquery.com/Utilities/jQuery.makeArray
	 */
	public static function makeArray($obj)
	{
		$array = array();
		if (is_object($object) && $object instanceof DOMNODELIST) {
			foreach ($object as $value)
				$array[] = $value;
		} else if (is_object($object) && !($object instanceof Iterator)) {
			foreach (get_object_vars($object) as $name => $value)
				$array[0][$name] = $value;
		} else {
			foreach ($object as $name => $value)
				$array[0][$name] = $value;
		}
		return $array;
	}
	public static function inArray($value, $array)
	{
		return in_array($value, $array);
	}
	/**
	 *
	 * @param $object
	 * @param $callback
	 * @return unknown_type
	 * @link http://docs.jquery.com/Utilities/jQuery.each
	 */
	public static function each($object, $callback, $param1 = null, $param2 = null, $param3 = null)
	{
		$paramStructure = null;
		if (func_num_args() > 2) {
			$paramStructure = func_get_args();
			$paramStructure = array_slice($paramStructure, 2);
		}
		if (is_object($object) && !($object instanceof Iterator)) {
			foreach (get_object_vars($object) as $name => $value)
				phpQuery::callbackRun($callback, array($name, $value), $paramStructure);
		} else {
			foreach ($object as $name => $value)
				phpQuery::callbackRun($callback, array($name, $value), $paramStructure);
		}
	}
	/**
	 *
	 * @link http://docs.jquery.com/Utilities/jQuery.map
	 */
	public static function map($array, $callback, $param1 = null, $param2 = null, $param3 = null)
	{
		$result = array();
		$paramStructure = null;
		if (func_num_args() > 2) {
			$paramStructure = func_get_args();
			$paramStructure = array_slice($paramStructure, 2);
		}
		foreach ($array as $v) {
			$vv = phpQuery::callbackRun($callback, array($v), $paramStructure);
			//			$callbackArgs = $args;
			//			foreach($args as $i => $arg) {
			//				$callbackArgs[$i] = $arg instanceof CallbackParam
			//					? $v
			//					: $arg;
			//			}
			//			$vv = call_user_func_array($callback, $callbackArgs);
			if (is_array($vv)) {
				foreach ($vv as $vvv)
					$result[] = $vvv;
			} else if ($vv !== null) {
				$result[] = $vv;
			}
		}
		return $result;
	}
	/**
	 *
	 * @param $callback Callback
	 * @param $params
	 * @param $paramStructure
	 * @return unknown_type
	 */
	public static function callbackRun($callback, $params = array(), $paramStructure = null)
	{
		if (!$callback)
			return;
		if ($callback instanceof CallbackParameterToReference) {
			// TODO support ParamStructure to select which $param push to reference
			if (isset($params[0]))
				$callback->callback = $params[0];
			return true;
		}
		if ($callback instanceof Callback) {
			$paramStructure = $callback->params;
			$callback = $callback->callback;
		}
		if (!$paramStructure)
			return call_user_func_array($callback, $params);
		$p = 0;
		foreach ($paramStructure as $i => $v) {
			$paramStructure[$i] = $v instanceof CallbackParam
				? $params[$p++]
				: $v;
		}
		return call_user_func_array($callback, $paramStructure);
	}
	/**
	 * Merge 2 phpQuery objects.
	 * @param array $one
	 * @param array $two
	 * @protected
	 * @todo node lists, phpQueryObject
	 */
	public static function merge($one, $two)
	{
		$elements = $one->elements;
		foreach ($two->elements as $node) {
			$exists = false;
			foreach ($elements as $node2) {
				if ($node2->isSameNode($node))
					$exists = true;
			}
			if (!$exists)
				$elements[] = $node;
		}
		return $elements;
		//		$one = $one->newInstance();
		//		$one->elements = $elements;
		//		return $one;
	}
	/**
	 *
	 * @param $array
	 * @param $callback
	 * @param $invert
	 * @return unknown_type
	 * @link http://docs.jquery.com/Utilities/jQuery.grep
	 */
	public static function grep($array, $callback, $invert = false)
	{
		$result = array();
		foreach ($array as $k => $v) {
			$r = call_user_func_array($callback, array($v, $k));
			if ($r === !(bool)$invert)
				$result[] = $v;
		}
		return $result;
	}
	public static function unique($array)
	{
		return array_unique($array);
	}
	/**
	 *
	 * @param $function
	 * @return unknown_type
	 * @TODO there are problems with non-static methods, second parameter pass it
	 * 	but doesnt verify is method is really callable
	 */
	public static function isFunction($function)
	{
		return is_callable($function);
	}
	public static function trim($str)
	{
		return trim($str);
	}
	/* PLUGINS NAMESPACE */
	/**
	 *
	 * @param $url
	 * @param $callback
	 * @param $param1
	 * @param $param2
	 * @param $param3
	 * @return phpQueryObject
	 */
	public static function browserGet($url, $callback, $param1 = null, $param2 = null, $param3 = null)
	{
		if (self::plugin('WebBrowser')) {
			$params = func_get_args();
			return self::callbackRun(array(self::$plugins, 'browserGet'), $params);
		} else {
			self::debug('WebBrowser plugin not available...');
		}
	}
	/**
	 *
	 * @param $url
	 * @param $data
	 * @param $callback
	 * @param $param1
	 * @param $param2
	 * @param $param3
	 * @return phpQueryObject
	 */
	public static function browserPost($url, $data, $callback, $param1 = null, $param2 = null, $param3 = null)
	{
		if (self::plugin('WebBrowser')) {
			$params = func_get_args();
			return self::callbackRun(array(self::$plugins, 'browserPost'), $params);
		} else {
			self::debug('WebBrowser plugin not available...');
		}
	}
	/**
	 *
	 * @param $ajaxSettings
	 * @param $callback
	 * @param $param1
	 * @param $param2
	 * @param $param3
	 * @return phpQueryObject
	 */
	public static function browser($ajaxSettings, $callback, $param1 = null, $param2 = null, $param3 = null)
	{
		if (self::plugin('WebBrowser')) {
			$params = func_get_args();
			return self::callbackRun(array(self::$plugins, 'browser'), $params);
		} else {
			self::debug('WebBrowser plugin not available...');
		}
	}
	/**
	 *
	 * @param $code
	 * @return string
	 */
	public static function php($code)
	{
		return self::code('php', $code);
	}
	/**
	 *
	 * @param $type
	 * @param $code
	 * @return string
	 */
	public static function code($type, $code)
	{
		return "<$type><!-- " . trim($code) . " --></$type>";
	}

	public static function __callStatic($method, $params)
	{
		return call_user_func_array(
			array(phpQuery::$plugins, $method),
			$params
		);
	}
	protected static function dataSetupNode($node, $documentID)
	{
		// search are return if alredy exists
		foreach (phpQuery::$documents[$documentID]->dataNodes as $dataNode) {
			if ($node->isSameNode($dataNode))
				return $dataNode;
		}
		// if doesn't, add it
		phpQuery::$documents[$documentID]->dataNodes[] = $node;
		return $node;
	}
	protected static function dataRemoveNode($node, $documentID)
	{
		// search are return if alredy exists
		foreach (phpQuery::$documents[$documentID]->dataNodes as $k => $dataNode) {
			if ($node->isSameNode($dataNode)) {
				unset(self::$documents[$documentID]->dataNodes[$k]);
				unset(self::$documents[$documentID]->data[$dataNode->dataID]);
			}
		}
	}
	public static function data($node, $name, $data, $documentID = null)
	{
		if (!$documentID)
			// TODO check if this works
			$documentID = self::getDocumentID($node);
		$document = phpQuery::$documents[$documentID];
		$node = self::dataSetupNode($node, $documentID);
		if (!isset($node->dataID))
			$node->dataID = ++phpQuery::$documents[$documentID]->uuid;
		$id = $node->dataID;
		if (!isset($document->data[$id]))
			$document->data[$id] = array();
		if (!is_null($data))
			$document->data[$id][$name] = $data;
		if ($name) {
			if (isset($document->data[$id][$name]))
				return $document->data[$id][$name];
		} else
			return $id;
	}
	public static function removeData($node, $name, $documentID)
	{
		if (!$documentID)
			// TODO check if this works
			$documentID = self::getDocumentID($node);
		$document = phpQuery::$documents[$documentID];
		$node = self::dataSetupNode($node, $documentID);
		$id = $node->dataID;
		if ($name) {
			if (isset($document->data[$id][$name]))
				unset($document->data[$id][$name]);
			$name = null;
			foreach ($document->data[$id] as $name)
				break;
			if (!$name)
				self::removeData($node, $name, $documentID);
		} else {
			self::dataRemoveNode($node, $documentID);
		}
	}
}
/**
 * Plugins static namespace class.
 *
 * @author Tobiasz Cudnik <tobiasz.cudnik/gmail.com>
 * @package phpQuery
 * @todo move plugin methods here (as statics)
 */
class phpQueryPlugins
{
	public function __call($method, $args)
	{
		if (isset(phpQuery::$extendStaticMethods[$method])) {
			$return = call_user_func_array(
				phpQuery::$extendStaticMethods[$method],
				$args
			);
		} else if (isset(phpQuery::$pluginsStaticMethods[$method])) {
			$class = phpQuery::$pluginsStaticMethods[$method];
			$realClass = "phpQueryPlugin_$class";
			$return = call_user_func_array(
				array($realClass, $method),
				$args
			);
			return isset($return)
				? $return
				: $this;
		} else
			throw new Exception("Method '{$method}' doesnt exist");
	}
}
/**
 * Shortcut to phpQuery::pq($arg1, $context)
 * Chainable.
 *
 * @see phpQuery::pq()
 * @return phpQueryObject|QueryTemplatesSource|QueryTemplatesParse|QueryTemplatesSourceQuery
 * @author Tobiasz Cudnik <tobiasz.cudnik/gmail.com>
 * @package phpQuery
 */
function pq($arg1, $context = null)
{
	$args = func_get_args();
	return call_user_func_array(
		array('phpQuery', 'pq'),
		$args
	);
}
// add plugins dir and Zend framework to include path
set_include_path(
	get_include_path()
		. PATH_SEPARATOR . dirname(__FILE__) . '/phpQuery/'
		. PATH_SEPARATOR . dirname(__FILE__) . '/phpQuery/plugins/'
);
// why ? no __call nor __get for statics in php...
// XXX __callStatic will be available in PHP 5.3
phpQuery::$plugins = new phpQueryPlugins();
// include bootstrap file (personal library config)
if (file_exists(dirname(__FILE__) . '/phpQuery/bootstrap.php'))
	require_once dirname(__FILE__) . '/phpQuery/bootstrap.php';