function ReadCSS($html) {
	preg_match_all('/<style[^>]*media=["\']([^"\'>]*)["\'].*?<\/style>/is',$html,$m);
	for($i=0; $i<count($m[0]); $i++) {
		if ($this->mpdf->CSSselectMedia && !preg_match('/('.trim($this->mpdf->CSSselectMedia).'|all)/i',$m[1][$i])) { 
			$html = str_replace($m[0][$i],'',$html);
		}
	}
	preg_match_all('/<link[^>]*media=["\']([^"\'>]*)["\'].*?>/is',$html,$m);
	for($i=0; $i<count($m[0]); $i++) {
		if ($this->mpdf->CSSselectMedia && !preg_match('/('.trim($this->mpdf->CSSselectMedia).'|all)/i',$m[1][$i])) { 
			$html = str_replace($m[0][$i],'',$html);
		}
	}

	// mPDF 5.5.02
	// Remove Comment tags <!-- ... --> inside CSS as <style> in HTML document
	// Remove Comment tags /* ...  */ inside CSS as <style> in HTML document
	// But first, we replace upper and mixed case closing style tag with lower
	// case so we can use str_replace later.
	preg_replace('/<\/style>/i', '</style>', $html);
	preg_match_all('/<style.*?>(.*?)<\/style>/si',$html,$m);
	if (count($m[1])) { 
		for($i=0;$i<count($m[1]);$i++) {
			// Remove comment tags 
			$sub = preg_replace('/(<\!\-\-|\-\->)/s',' ',$m[1][$i]);
			$sub = '>'.preg_replace('|/\*.*?\*/|s',' ',$sub).'</style>';
			$html = str_replace('>'.$m[1][$i].'</style>', $sub, $html);
		}
	}


	$html = preg_replace('/<!--mpdf/i','',$html);
	$html = preg_replace('/mpdf-->/i','',$html);
	$html = preg_replace('/<\!\-\-.*?\-\->/s',' ',$html);

	$match = 0; // no match for instance
	$regexp = ''; // This helps debugging: showing what is the REAL string being processed
	$CSSext = array(); 

	//CSS inside external files
	$regexp = '/<link[^>]*rel=["\']stylesheet["\'][^>]*href=["\']([^>"\']*)["\'].*?>/si';
	$x = preg_match_all($regexp,$html,$cxt);
	if ($x) { 
		$match += $x; 
		$CSSext = $cxt[1];
	}

	$regexp = '/<link[^>]*href=["\']([^>"\']*)["\'][^>]*?rel=["\']stylesheet["\'].*?>/si';
	$x = preg_match_all($regexp,$html,$cxt);
	if ($x) { 
		$match += $x; 
		$CSSext = array_merge($CSSext,$cxt[1]);
	}

	// look for @import stylesheets
	//$regexp = '/@import url\([\'\"]{0,1}([^\)]*?\.css)[\'\"]{0,1}\)/si';
	$regexp = '/@import url\([\'\"]{0,1}([^\)]*?\.css(\?\S+)?)[\'\"]{0,1}\)/si';
	$x = preg_match_all($regexp,$html,$cxt);
	if ($x) { 
		$match += $x; 
		$CSSext = array_merge($CSSext,$cxt[1]);
	}

	// look for @import without the url()
	//$regexp = '/@import [\'\"]{0,1}([^;]*?\.css)[\'\"]{0,1}/si';
	$regexp = '/@import [\'\"]{0,1}([^;]*?\.css(\?\S+)?)[\'\"]{0,1}/si';
	$x = preg_match_all($regexp,$html,$cxt);
	if ($x) { 
		$match += $x; 
		$CSSext = array_merge($CSSext,$cxt[1]);
	}

	$ind = 0;
	$CSSstr = '';

	if (!is_array($this->cascadeCSS)) $this->cascadeCSS = array();

	while($match){
		$path = $CSSext[$ind];
		$this->mpdf->GetFullPath($path); 
		$CSSextblock = $this->mpdf->_get_file($path);
		if ($CSSextblock) {
			// look for embedded @import stylesheets in other stylesheets
			// and fix url paths (including background-images) relative to stylesheet
			//$regexpem = '/@import url\([\'\"]{0,1}(.*?\.css)[\'\"]{0,1}\)/si';
			$regexpem = '/@import url\([\'\"]{0,1}(.*?\.css(\?\S+)?)[\'\"]{0,1}\)/si';
			$xem = preg_match_all($regexpem,$CSSextblock,$cxtem);
			$cssBasePath = preg_replace('/\/[^\/]*$/','',$path) . '/';
			if ($xem) { 
				foreach($cxtem[1] AS $cxtembedded) {
					// path is relative to original stlyesheet!!
					$this->mpdf->GetFullPath($cxtembedded, $cssBasePath );
					$match++;
					$CSSext[] = $cxtembedded;
				}
			}
			$regexpem = '/(background[^;]*url\s*\(\s*[\'\"]{0,1})([^\)\'\"]*)([\'\"]{0,1}\s*\))/si';
			$xem = preg_match_all($regexpem,$CSSextblock,$cxtem);
			if ($xem) { 
				for ($i=0;$i<count($cxtem[0]);$i++) {
					// path is relative to original stlyesheet!!
					$embedded = $cxtem[2][$i];
					if (!preg_match('/^data:image/i', $embedded)) {	// mPDF 5.5.13
						$this->mpdf->GetFullPath($embedded, $cssBasePath );
						$CSSextblock = str_replace($cxtem[0][$i], ($cxtem[1][$i].$embedded.$cxtem[3][$i]), $CSSextblock);
					}
				}
			}
			$CSSstr .= ' '.$CSSextblock;
		}
		$match--;
		$ind++;
	} //end of match

	$match = 0; // reset value, if needed
	// CSS as <style> in HTML document
	$regexp = '/<style.*?>(.*?)<\/style>/si'; 
	$match = preg_match_all($regexp,$html,$CSSblock);
	if ($match) {
		$tmpCSSstr = implode(' ',$CSSblock[1]);
		$regexpem = '/(background[^;]*url\s*\(\s*[\'\"]{0,1})([^\)\'\"]*)([\'\"]{0,1}\s*\))/si';
		$xem = preg_match_all($regexpem,$tmpCSSstr ,$cxtem);
		if ($xem) { 
		   for ($i=0;$i<count($cxtem[0]);$i++) {
			$embedded = $cxtem[2][$i];
			if (!preg_match('/^data:image/i', $embedded)) {	// mPDF 5.5.13
				$this->mpdf->GetFullPath($embedded);
				$tmpCSSstr = str_replace($cxtem[0][$i], ($cxtem[1][$i].$embedded.$cxtem[3][$i]), $tmpCSSstr );
			}
		   }
		}
		$CSSstr .= ' '.$tmpCSSstr;
	}
	// Remove comments
	$CSSstr = preg_replace('|/\*.*?\*/|s',' ',$CSSstr);
	$CSSstr = preg_replace('/[\s\n\r\t\f]/s',' ',$CSSstr);

	if (preg_match('/@media/',$CSSstr)) { 
		preg_match_all('/@media(.*?)\{(([^\{\}]*\{[^\{\}]*\})+)\s*\}/is',$CSSstr,$m);
		for($i=0; $i<count($m[0]); $i++) {
			if ($this->mpdf->CSSselectMedia && !preg_match('/('.trim($this->mpdf->CSSselectMedia).'|all)/is',$m[1][$i])) { 
				$CSSstr = str_replace($m[0][$i], '', $CSSstr);
			}
			else {
				$CSSstr = str_replace($m[0][$i],' '.$m[2][$i].' ',$CSSstr);
			}
		}
	}

	// mPDF 5.5.13
	// Replace any background: url(data:image... with temporary image file reference
	preg_match_all("/(url\(data:image\/(jpeg|gif|png);base64,(.*)\))/si", $CSSstr, $idata);
	if (count($idata[0])) { 
		for($i=0;$i<count($idata[0]);$i++) {
			$file = _MPDF_TEMP_PATH.'_tempCSSidata'.RAND(1,10000).'_'.$i.'.'.$idata[2][$i];
			//Save to local file
			file_put_contents($file, base64_decode($idata[3][$i]));
			// $this->mpdf->GetFullPath($file);	// ? is this needed - NO  mPDF 5.6.03
			$CSSstr = str_replace($idata[0][$i], 'url("'.$file.'")', $CSSstr); 	// mPDF 5.5.17
		}
	}

	$CSSstr = preg_replace('/(<\!\-\-|\-\->)/s',' ',$CSSstr);
	if ($CSSstr ) {
		preg_match_all('/(.*?)\{(.*?)\}/',$CSSstr,$styles);
		for($i=0; $i < count($styles[1]) ; $i++)  {
			// SET array e.g. $classproperties['COLOR'] = '#ffffff';
	 		$stylestr= trim($styles[2][$i]);
			$stylearr = explode(';',$stylestr);
			foreach($stylearr AS $sta) {
				if (trim($sta)) { 
					// Changed to allow style="background: url('http://www.bpm1.com/bg.jpg')"
					list($property,$value) = explode(':',$sta,2);
					$property = trim($property);
					$value = preg_replace('/\s*!important/i','',$value);
					$value = trim($value);
					if ($property && ($value || $value==='0')) {
					// Ignores -webkit-gradient so doesn't override -moz-
						if ((strtoupper($property)=='BACKGROUND-IMAGE' || strtoupper($property)=='BACKGROUND') && preg_match('/-webkit-gradient/i',$value)) { 
							continue; 
						}
	  					$classproperties[strtoupper($property)] = $value;
					}
				}
			}
			$classproperties = $this->fixCSS($classproperties);
			$tagstr = strtoupper(trim($styles[1][$i]));
			$tagarr = explode(',',$tagstr);
			$pageselectors = false;	// used to turn on $this->mpdf->mirrorMargins
			foreach($tagarr AS $tg) {
				$tags = preg_split('/\s+/',trim($tg));
				$level = count($tags);
				$t = '';
				$t2 = '';
				$t3 = '';
				if (trim($tags[0])=='@PAGE') {
					if (isset($tags[0])) { $t = trim($tags[0]); }
					if (isset($tags[1])) { $t2 = trim($tags[1]); }
					if (isset($tags[2])) { $t3 = trim($tags[2]); }
					$tag = '';
					if ($level==1) { $tag = $t; }
					else if ($level==2 && preg_match('/^[:](.*)$/',$t2,$m)) { 
						$tag = $t.'>>PSEUDO>>'.$m[1]; 
						if ($m[1]=='LEFT' || $m[1]=='RIGHT') { $pageselectors = true; }	// used to turn on $this->mpdf->mirrorMargins 
					}
					else if ($level==2) { $tag = $t.'>>NAMED>>'.$t2; }
					else if ($level==3 && preg_match('/^[:](.*)$/',$t3,$m)) { 
						$tag = $t.'>>NAMED>>'.$t2.'>>PSEUDO>>'.$m[1]; 
						if ($m[1]=='LEFT' || $m[1]=='RIGHT') { $pageselectors = true; }	// used to turn on $this->mpdf->mirrorMargins
					}
					if (isset($this->CSS[$tag]) && $tag) { $this->CSS[$tag] = $this->array_merge_recursive_unique($this->CSS[$tag], $classproperties); }
					else if ($tag) { $this->CSS[$tag] = $classproperties; }
				}

				else if ($level == 1) {		// e.g. p or .class or #id or p.class or p#id
				if (isset($tags[0])) { $t = trim($tags[0]); }
					if ($t) {
						$tag = '';
						if (preg_match('/^[.](.*)$/',$t,$m)) { $tag = 'CLASS>>'.$m[1]; }
						else if (preg_match('/^[#](.*)$/',$t,$m)) { $tag = 'ID>>'.$m[1]; }
						else if (preg_match('/^('.$this->mpdf->allowedCSStags.')[.](.*)$/',$t,$m)) { $tag = $m[1].'>>CLASS>>'.$m[2]; }
						else if (preg_match('/^('.$this->mpdf->allowedCSStags.')\s*:NTH-CHILD\((.*)\)$/',$t,$m)) { $tag = $m[1].'>>SELECTORNTHCHILD>>'.$m[2]; }
						else if (preg_match('/^('.$this->mpdf->allowedCSStags.')[#](.*)$/',$t,$m)) { $tag = $m[1].'>>ID>>'.$m[2]; }
						else if (preg_match('/^('.$this->mpdf->allowedCSStags.')$/',$t)) { $tag= $t; }
						if (isset($this->CSS[$tag]) && $tag) { $this->CSS[$tag] = $this->array_merge_recursive_unique($this->CSS[$tag], $classproperties); }
						else if ($tag) { $this->CSS[$tag] = $classproperties; }
					}
				}
				else {
					$tmp = array();
					for($n=0;$n<$level;$n++) {
						if (isset($tags[$n])) { $t = trim($tags[$n]); }
						else { $t = ''; }
						if ($t) {
							$tag = '';
							if (preg_match('/^[.](.*)$/',$t,$m)) { $tag = 'CLASS>>'.$m[1]; }
							else if (preg_match('/^[#](.*)$/',$t,$m)) { $tag = 'ID>>'.$m[1]; }
							else if (preg_match('/^('.$this->mpdf->allowedCSStags.')[.](.*)$/',$t,$m)) { $tag = $m[1].'>>CLASS>>'.$m[2]; }
							else if (preg_match('/^('.$this->mpdf->allowedCSStags.')\s*:NTH-CHILD\((.*)\)$/',$t,$m)) { $tag = $m[1].'>>SELECTORNTHCHILD>>'.$m[2]; }
							else if (preg_match('/^('.$this->mpdf->allowedCSStags.')[#](.*)$/',$t,$m)) { $tag = $m[1].'>>ID>>'.$m[2]; }
							else if (preg_match('/^('.$this->mpdf->allowedCSStags.')$/',$t)) { $tag= $t; }

							if ($tag) $tmp[] = $tag;
							else { break; }
						}
					}
		   
					if ($tag) {
						$x = &$this->cascadeCSS; 
						foreach($tmp AS $tp) { $x = &$x[$tp]; }
						$x = $this->array_merge_recursive_unique($x, $classproperties); 
						$x['depth'] = $level;
					}
				}
			}
			if ($pageselectors) { $this->mpdf->mirrorMargins = true; }
  			$properties = array();
  			$values = array();
  			$classproperties = array();
		}
	} // end of if
	//Remove CSS (tags and content), if any
	$regexp = '/<style.*?>(.*?)<\/style>/si'; // it can be <style> or <style type="txt/css"> 
	$html = preg_replace($regexp,'',$html);
//print_r($this->CSS); exit;
//print_r($this->cascadeCSS); exit;
	return $html;
}