- <?php
- /**
-  * CSSTidy - CSS Parser and Optimiser
-  *
-  * CSS Optimising Class
-  * This class optimises CSS data generated by csstidy.
-  *
-  * This file is part of CSSTidy.
-  *
-  * CSSTidy is free software; you can redistribute it and/or modify
-  * it under the terms of the GNU General Public License as published by
-  * the Free Software Foundation; either version 2 of the License, or
-  * (at your option) any later version.
-  *
-  * CSSTidy is distributed in the hope that it will be useful,
-  * but WITHOUT ANY WARRANTY; without even the implied warranty of
-  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-  * GNU General Public License for more details.
-  *
-  * You should have received a copy of the GNU General Public License
-  * along with CSSTidy; if not, write to the Free Software
-  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
-  *
-  * @license http://opensource.org/licenses/gpl-license.php GNU Public License
-  * @package csstidy
-  * @author Florian Schmitz (floele at gmail dot com) 2005-2006
-  */
-  
- /**
-  * CSS Optimising Class
-  *
-  * This class optimises CSS data generated by csstidy.
-  *
-  * @package csstidy
-  * @author Florian Schmitz (floele at gmail dot com) 2005-2006
-  * @version 1.0
-  */
-  
- class csstidy_optimise
- {
-     /**
-      * Constructor
-      * @param array $css contains the class csstidy
-      * @access private
-      * @version 1.0
-      */
-     function csstidy_optimise(&$css)
-     {
-         $this->parser    =& $css;
-         $this->css       =& $css->css;
-         $this->sub_value =& $css->sub_value;
-         $this->at        =& $css->at;
-         $this->selector  =& $css->selector;
-         $this->property  =& $css->property;
-         $this->value     =& $css->value;
-     }
-  
-     /**
-      * Optimises $css after parsing
-      * @access public
-      * @version 1.0
-      */
-     function postparse()
-     {
-         if ($this->parser->get_cfg('preserve_css')) {
-             return;
-         }
-         
-         if ($this->parser->get_cfg('merge_selectors') == 2)
-         {
-             foreach ($this->css as $medium => $value)
-             {
-                 $this->merge_selectors($this->css[$medium]);
-             }
-         }
-  
-         if ($this->parser->get_cfg('optimise_shorthands') > 0)
-         {
-             foreach ($this->css as $medium => $value)
-             {
-                 foreach ($value as $selector => $value1)
-                 {
-                     $this->css[$medium][$selector] = csstidy_optimise::merge_4value_shorthands($this->css[$medium][$selector]);
-                     
-                     if ($this->parser->get_cfg('optimise_shorthands') < 2) {
-                         continue;
-                     }
-                     
-                     $this->css[$medium][$selector] = csstidy_optimise::merge_bg($this->css[$medium][$selector]);
-                     if (empty($this->css[$medium][$selector])) {
-                         unset($this->css[$medium][$selector]);
-                     }
-                 }
-             }
-         }
-     }
-  
-     /**
-      * Optimises values
-      * @access public
-      * @version 1.0
-      */
-     function value()
-     {
-         $shorthands =& $GLOBALS['csstidy']['shorthands'];
-         
-         // optimise shorthand properties
-         if(isset($shorthands[$this->property]))
-         {
-             $temp = csstidy_optimise::shorthand($this->value); // FIXME - move
-             if($temp != $this->value)
-             {
-                 $this->parser->log('Optimised shorthand notation ('.$this->property.'): Changed "'.$this->value.'" to "'.$temp.'"','Information');
-             }
-             $this->value = $temp;
-         }
-         
-         // Remove whitespace at ! important
-         if($this->value != $this->compress_important($this->value))
-         {
-             $this->parser->log('Optimised !important','Information');
-         }
-     }
-                      
-     /**
-      * Optimises shorthands
-      * @access public
-      * @version 1.0
-      */
-     function shorthands()
-     {
-         $shorthands =& $GLOBALS['csstidy']['shorthands'];
-         
-         if(!$this->parser->get_cfg('optimise_shorthands') || $this->parser->get_cfg('preserve_css')) {
-             return;
-         }
-         
-         if($this->property == 'background' && $this->parser->get_cfg('optimise_shorthands') > 1)
-         {
-             unset($this->css[$this->at][$this->selector]['background']);
-             $this->parser->merge_css_blocks($this->at,$this->selector,csstidy_optimise::dissolve_short_bg($this->value));
-         }
-         if(isset($shorthands[$this->property]))
-         {
-             $this->parser->merge_css_blocks($this->at,$this->selector,csstidy_optimise::dissolve_4value_shorthands($this->property,$this->value));
-             if(is_array($shorthands[$this->property]))
-             {
-                 unset($this->css[$this->at][$this->selector][$this->property]);
-             }
-         }
-     }
-     
-     /**
-      * Optimises a sub-value
-      * @access public
-      * @version 1.0
-      */
-     function subvalue()
-     {
-         $replace_colors =& $GLOBALS['csstidy']['replace_colors'];
-  
-         $this->sub_value = trim($this->sub_value);
-         if($this->sub_value == '') // caution : '0'
-         {
-             return;
-         }
-         
-         // Compress font-weight
-         if($this->property == 'font-weight' && $this->parser->get_cfg('compress_font-weight'))
-         {
-             $important = '';
-             if(csstidy::is_important($this->sub_value))
-             {
-                 $important = ' !important';
-                 $this->sub_value = csstidy::gvw_important($this->sub_value);
-             }
-             if($this->sub_value == 'bold')
-             {
-                 $this->sub_value = '700'.$important;
-                 $this->parser->log('Optimised font-weight: Changed "bold" to "700"','Information');
-             }
-             else if($this->sub_value == 'normal')
-             {
-                 $this->sub_value = '400'.$important;
-                 $this->parser->log('Optimised font-weight: Changed "normal" to "400"','Information');
-             }
-         }
-         
-         $temp = $this->compress_numbers($this->sub_value);
-         if($temp != $this->sub_value)
-         {
-             if(strlen($temp) > strlen($this->sub_value)) {
-                 $this->parser->log('Fixed invalid number: Changed "'.$this->sub_value.'" to "'.$temp.'"','Warning');
-             } else {
-                 $this->parser->log('Optimised number: Changed "'.$this->sub_value.'" to "'.$temp.'"','Information');
-             }            
-             $this->sub_value = $temp;
-         }
-         if($this->parser->get_cfg('compress_colors'))
-         {
-             $temp = $this->cut_color($this->sub_value);
-             if($temp !== $this->sub_value)
-             {
-                 if(isset($replace_colors[$this->sub_value])) {
-                     $this->parser->log('Fixed invalid color name: Changed "'.$this->sub_value.'" to "'.$temp.'"','Warning');
-                 } else {
-                     $this->parser->log('Optimised color: Changed "'.$this->sub_value.'" to "'.$temp.'"','Information');
-                 }                
-                 $this->sub_value = $temp;
-             }
-         }
-     }
-     
-     /**
-      * Compresses shorthand values. Example: margin:1px 1px 1px 1px -> margin:1px
-      * @param string $value 
-      * @access public
-      * @return string 
-      * @version 1.0
-      */
-     function shorthand($value)
-     {
-         $important = '';
-         if(csstidy::is_important($value))
-         {
-             $values = csstidy::gvw_important($value);
-             $important = ' !important';
-         }
-         else $values = $value;
-         
-         $values = explode(' ',$values);
-         switch(count($values))
-         {
-             case 4:
-             if($values[0] == $values[1] && $values[0] == $values[2] && $values[0] == $values[3])
-             {
-                 return $values[0].$important;
-             }
-             elseif($values[1] == $values[3] && $values[0] == $values[2])
-             {
-                 return $values[0].' '.$values[1].$important;
-             }
-             elseif($values[1] == $values[3])
-             {
-                 return $values[0].' '.$values[1].' '.$values[2].$important;
-             }
-             break;
-             
-             case 3:
-             if($values[0] == $values[1] && $values[0] == $values[2])
-             {
-                 return $values[0].$important;
-             }
-             elseif($values[0] == $values[2])
-             {
-                 return $values[0].' '.$values[1].$important;
-             }
-             break;
-             
-             case 2:
-             if($values[0] == $values[1])
-             {
-                 return $values[0].$important;
-             }
-             break;
-         }
-         
-         return $value;
-     }
-  
-     /**
-      * Removes unnecessary whitespace in ! important
-      * @param string $string 
-      * @return string 
-      * @access public
-      * @version 1.1
-      */
-     function compress_important(&$string)
-     {
-         if(csstidy::is_important($string))
-         {
-             $string = csstidy::gvw_important($string) . ' !important';
-         }
-         return $string;
-     }
-  
-     /**
-      * Color compression function. Converts all rgb() values to #-values and uses the short-form if possible. Also replaces 4 color names by #-values.
-      * @param string $color 
-      * @return string 
-      * @version 1.1
-      */
-     function cut_color($color)
-     {
-         $replace_colors =& $GLOBALS['csstidy']['replace_colors'];
-         
-         // rgb(0,0,0) -> #000000 (or #000 in this case later)
-         if(strtolower(substr($color,0,4)) == 'rgb(')
-         {
-             $color_tmp = substr($color,4,strlen($color)-5);
-             $color_tmp = explode(',',$color_tmp);
-             for ( $i = 0; $i < count($color_tmp); $i++ )
-             {
-                 $color_tmp[$i] = trim ($color_tmp[$i]);
-                 if(substr($color_tmp[$i],-1) == '%')
-                 {
-                     $color_tmp[$i] = round((255*$color_tmp[$i])/100);
-                 }
-                 if($color_tmp[$i]>255) $color_tmp[$i] = 255;
-             }
-             $color = '#';
-             for ($i = 0; $i < 3; $i++ )
-             {
-                 if($color_tmp[$i]<16) {
-                     $color .= '0' . dechex($color_tmp[$i]);
-                 } else {
-                     $color .= dechex($color_tmp[$i]);
-                 }
-             }
-         }
-         
-         // Fix bad color names
-         if(isset($replace_colors[strtolower($color)]))
-         {
-             $color = $replace_colors[strtolower($color)];
-         }
-         
-         // #aabbcc -> #abc
-         if(strlen($color) == 7)
-         {
-             $color_temp = strtolower($color);
-             if($color_temp{0} == '#' && $color_temp{1} == $color_temp{2} && $color_temp{3} == $color_temp{4} && $color_temp{5} == $color_temp{6})
-             {
-                 $color = '#'.$color{1}.$color{3}.$color{5};
-             }
-         }
-         
-         switch(strtolower($color))
-         {
-             /* color name -> hex code */
-             case 'black': return '#000';
-             case 'fuchsia': return '#F0F';
-             case 'white': return '#FFF';
-             case 'yellow': return '#FF0';
-                     
-             /* hex code -> color name */
-             case '#800000': return 'maroon';
-             case '#ffa500': return 'orange';
-             case '#808000': return 'olive';
-             case '#800080': return 'purple';
-             case '#008000': return 'green';
-             case '#000080': return 'navy';
-             case '#008080': return 'teal';
-             case '#c0c0c0': return 'silver';
-             case '#808080': return 'gray';
-             case '#f00': return 'red';    
-         }
-  
-         return $color;
-     }
-     
-     /**
-      * Compresses numbers (ie. 1.0 becomes 1 or 1.100 becomes 1.1 )
-      * @param string $subvalue 
-      * @return string 
-      * @version 1.2
-      */
-     function compress_numbers($subvalue)
-     {
-         $units =& $GLOBALS['csstidy']['units'];
-         $number_values =& $GLOBALS['csstidy']['number_values'];
-         $color_values =& $GLOBALS['csstidy']['color_values'];
-  
-         // for font:1em/1em sans-serif...;
-         if($this->property == 'font')
-         {
-             $temp = explode('/',$subvalue);
-         }
-         else
-         {
-             $temp = array($subvalue);
-         }
-         for ($l = 0; $l < count($temp); $l++)
-         {
-             // continue if no numeric value
-             if (!(strlen($temp[$l]) > 0 && ( is_numeric($temp[$l]{0}) || $temp[$l]{0} == '+' || $temp[$l]{0} == '-' ) ))
-             {
-                 continue;
-             }
-  
-             // Fix bad colors
-             if (in_array($this->property, $color_values))
-             {
-                 $temp[$l] = '#'.$temp[$l];
-             }
-         
-             if (floatval($temp[$l]) == 0)
-             {
-                 $temp[$l] = '0';
-             }
-             else
-             {
-                 $unit_found = FALSE;
-                 for ($m = 0, $size_4 = count($units); $m < $size_4; $m++)
-                 {
-                     if (strpos(strtolower($temp[$l]),$units[$m]) !== FALSE)
-                     {
-                         $temp[$l] = floatval($temp[$l]).$units[$m];
-                         $unit_found = TRUE;
-                         break;
-                     }
-                 }
-                 if (!$unit_found && !in_array($this->property,$number_values,TRUE))
-                 {
-                     $temp[$l] = floatval($temp[$l]).'px';
-                 }
-                 else if (!$unit_found)
-                 {
-                     $temp[$l] = floatval($temp[$l]);
-                 }
-             }
-         }
-  
-         return ((count($temp) > 1) ? $temp[0].'/'.$temp[1] : $temp[0]);
-     }
-  
-     /**
-      * Merges selectors with same properties. Example: a{color:red} b{color:red} -> a,b{color:red}
-      * Very basic and has at least one bug. Hopefully there is a replacement soon.
-      * @param array $array 
-      * @return array 
-      * @access public
-      * @version 1.2
-      */
-     function merge_selectors(&$array)
-     {
-         $css = $array;
-         foreach($css as $key => $value)
-         {
-             if(!isset($css[$key]))
-             {
-                 continue;
-             }
-             $newsel = '';
-             
-             // Check if properties also exist in another selector
-             $keys = array();
-             // PHP bug (?) without $css = $array; here
-             foreach($css as $selector => $vali)
-             {
-                 if($selector == $key)
-                 {
-                     continue;
-                 }
-                 
-                 if($css[$key] === $vali)
-                 {
-                     $keys[] = $selector;
-                 }
-             }
-  
-             if(!empty($keys))
-             {
-                 $newsel = $key;
-                 unset($css[$key]);
-                 foreach($keys as $selector)
-                 {
-                     unset($css[$selector]);
-                     $newsel .= ','.$selector;
-                 }
-                 $css[$newsel] = $value;
-             }
-         }
-         $array = $css;
-     }
-  
-     /**
-      * Dissolves properties like padding:10px 10px 10px to padding-top:10px;padding-bottom:10px;...
-      * @param string $property 
-      * @param string $value 
-      * @return array 
-      * @version 1.0
-      * @see merge_4value_shorthands()
-      */
-     function dissolve_4value_shorthands($property,$value)
-     {
-         $shorthands =& $GLOBALS['csstidy']['shorthands'];
-         if(!is_array($shorthands[$property]))
-         {
-             $return[$property] = $value;
-             return $return;
-         }
-         
-         $important = '';
-         if(csstidy::is_important($value))
-         {
-             $value = csstidy::gvw_important($value);
-             $important = ' !important';
-         }
-         $values = explode(' ',$value);
-  
-  
-         $return = array();
-         if(count($values) == 4)
-         {
-             for($i=0;$i<4;$i++)
-             {
-                 $return[$shorthands[$property][$i]] = $values[$i].$important;
-             }
-         }
-         elseif(count($values) == 3)
-         {
-             $return[$shorthands[$property][0]] = $values[0].$important;
-             $return[$shorthands[$property][1]] = $values[1].$important;
-             $return[$shorthands[$property][3]] = $values[1].$important;
-             $return[$shorthands[$property][2]] = $values[2].$important;
-         }
-         elseif(count($values) == 2)
-         {
-             for($i=0;$i<4;$i++)
-             {
-                 $return[$shorthands[$property][$i]] = (($i % 2 != 0)) ? $values[1].$important : $values[0].$important;
-             }
-         }
-         else
-         {
-             for($i=0;$i<4;$i++)
-             {
-                 $return[$shorthands[$property][$i]] = $values[0].$important;
-             }    
-         }
-         
-         return $return;
-     }
-  
-     /**
-      * Explodes a string as explode() does, however, not if $sep is escaped or within a string.
-      * @param string $sep seperator
-      * @param string $string 
-      * @return array 
-      * @version 1.0
-      */
-     function explode_ws($sep,$string)
-     {
-         $status = 'st';
-         $to = '';
-         
-         $output = array();
-         $num = 0;
-         for($i = 0, $len = strlen($string);$i < $len; $i++)
-         {
-             switch($status)
-             {
-                 case 'st':
-                 if($string{$i} == $sep && !csstidy::escaped($string,$i))
-                 {
-                     ++$num;
-                 }
-                 elseif($string{$i} == '"' || $string{$i} == '\'' || $string{$i} == '(' && !csstidy::escaped($string,$i))
-                 {
-                     $status = 'str';
-                     $to = ($string{$i} == '(') ? ')' : $string{$i};
-                     (isset($output[$num])) ? $output[$num] .= $string{$i} : $output[$num] = $string{$i};
-                 }
-                 else
-                 {
-                     (isset($output[$num])) ? $output[$num] .= $string{$i} : $output[$num] = $string{$i};
-                 }
-                 break;
-                 
-                 case 'str':
-                 if($string{$i} == $to && !csstidy::escaped($string,$i))
-                 {
-                     $status = 'st';
-                 }
-                 (isset($output[$num])) ? $output[$num] .= $string{$i} : $output[$num] = $string{$i};
-                 break;
-             }
-         }
-         
-         if(isset($output[0]))
-         {
-             return $output;
-         }
-         else
-         {
-             return array($output);
-         }
-     }
-  
-     /**
-      * Merges Shorthand properties again, the opposite of dissolve_4value_shorthands()
-      * @param array $array 
-      * @return array 
-      * @version 1.2
-      * @see dissolve_4value_shorthands()
-      */
-     function merge_4value_shorthands($array)
-     {
-         $return = $array;
-         $shorthands =& $GLOBALS['csstidy']['shorthands'];
-         
-         foreach($shorthands as $key => $value)
-         {
-             if(isset($array[$value[0]]) && isset($array[$value[1]])
-             && isset($array[$value[2]]) && isset($array[$value[3]]) && $value !== 0)
-             {
-                 $return[$key] = '';
-                 
-                 $important = '';
-                 for($i = 0; $i < 4; $i++)
-                 {
-                     $val = $array[$value[$i]];
-                     if(csstidy::is_important($val))
-                     {
-                         $important = '!important';
-                         $return[$key] .= csstidy::gvw_important($val).' ';
-                     }
-                     else
-                     {
-                         $return[$key] .= $val.' ';
-                     }
-                     unset($return[$value[$i]]);
-                 }
-                 $return[$key] = csstidy_optimise::shorthand(trim($return[$key].$important));        
-             }
-         }
-         return $return;
-     }
-  
-     /**
-      * Dissolve background property
-      * @param string $str_value 
-      * @return array 
-      * @version 1.0
-      * @see merge_bg()
-      * @todo full CSS 3 compliance
-      */
-     function dissolve_short_bg($str_value)
-     {
-         $background_prop_default =& $GLOBALS['csstidy']['background_prop_default'];
-         $repeat = array('repeat','repeat-x','repeat-y','no-repeat','space');
-         $attachment = array('scroll','fixed','local');
-         $clip = array('border','padding');
-         $origin = array('border','padding','content');
-         $pos = array('top','center','bottom','left','right');
-         $important = '';
-         $return = array('background-image' => NULL,'background-size' => NULL,'background-repeat' => NULL,'background-position' => NULL,'background-attachment'=>NULL,'background-clip' => NULL,'background-origin' => NULL,'background-color' => NULL);
-         
-         if(csstidy::is_important($str_value))
-         {
-             $important = ' !important';
-             $str_value = csstidy::gvw_important($str_value);
-         }
-         
-         $str_value = csstidy_optimise::explode_ws(',',$str_value);
-         for($i = 0; $i < count($str_value); $i++)
-         {
-             $have['clip'] = FALSE; $have['pos'] = FALSE;
-             $have['color'] = FALSE; $have['bg'] = FALSE;
-             
-             $str_value[$i] = csstidy_optimise::explode_ws(' ',trim($str_value[$i]));
-             
-             for($j = 0; $j < count($str_value[$i]); $j++)
-             {
-                 if($have['bg'] === FALSE && (substr($str_value[$i][$j],0,4) == 'url(' || $str_value[$i][$j] === 'none'))
-                 {
-                     $return['background-image'] .= $str_value[$i][$j].',';
-                     $have['bg'] = TRUE;
-                 }
-                 elseif(in_array($str_value[$i][$j],$repeat,TRUE))
-                 {
-                     $return['background-repeat'] .= $str_value[$i][$j].',';
-                 }
-                 elseif(in_array($str_value[$i][$j],$attachment,TRUE))
-                 {
-                     $return['background-attachment'] .= $str_value[$i][$j].',';
-                 }
-                 elseif(in_array($str_value[$i][$j],$clip,TRUE) && !$have['clip'])
-                 {
-                     $return['background-clip'] .= $str_value[$i][$j].',';
-                     $have['clip'] = TRUE;
-                 }
-                 elseif(in_array($str_value[$i][$j],$origin,TRUE))
-                 {
-                     $return['background-origin'] .= $str_value[$i][$j].',';
-                 }
-                 elseif($str_value[$i][$j]{0} == '(')
-                 {
-                     $return['background-size'] .= substr($str_value[$i][$j],1,-1).',';
-                 }
-                 elseif(in_array($str_value[$i][$j],$pos,TRUE) || is_numeric($str_value[$i][$j]{0}) || $str_value[$i][$j]{0} === NULL)
-                 {
-                     $return['background-position'] .= $str_value[$i][$j];
-                     if(!$have['pos']) $return['background-position'] .= ' '; else $return['background-position'].= ',';
-                     $have['pos'] = TRUE;
-                 }
-                 elseif(!$have['color'])
-                 {
-                     $return['background-color'] .= $str_value[$i][$j].',';
-                     $have['color'] = TRUE;
-                 }
-             }
-         }
-         
-         foreach($background_prop_default as $bg_prop => $default_value)
-         {
-             if($return[$bg_prop] !== NULL)
-             {
-                 $return[$bg_prop] = substr($return[$bg_prop],0,-1).$important;
-             }
-             else $return[$bg_prop] = $default_value.$important;
-         }
-         return $return;    
-     }
-  
-     /**
-      * Merges all background properties
-      * @param array $input_css 
-      * @return array 
-      * @version 1.0
-      * @see dissolve_short_bg()
-      * @todo full CSS 3 compliance
-      */
-     function merge_bg($input_css)
-     {
-         $background_prop_default =& $GLOBALS['csstidy']['background_prop_default'];
-         // Max number of background images. CSS3 not yet fully implemented
-         $number_of_values = @max(count(csstidy_optimise::explode_ws(',',$input_css['background-image'])),count(csstidy_optimise::explode_ws(',',$input_css['background-color'])),1);
-         // Array with background images to check if BG image exists
-         $bg_img_array = @csstidy_optimise::explode_ws(',',csstidy::gvw_important($input_css['background-image']));
-         $new_bg_value = '';
-         $important = '';
-         
-         for($i = 0; $i < $number_of_values; $i++)
-         {
-             foreach($background_prop_default as $bg_property => $default_value)
-             {
-                 // Skip if property does not exist
-                 if(!isset($input_css[$bg_property]))
-                 {
-                     continue;
-                 }
-                 
-                 $cur_value = $input_css[$bg_property];
-                 
-                 // Skip some properties if there is no background image
-                 if((!isset($bg_img_array[$i]) || $bg_img_array[$i] === 'none')
-                     && ($bg_property === 'background-size' || $bg_property === 'background-position'
-                     || $bg_property === 'background-attachment' || $bg_property === 'background-repeat'))
-                 {
-                     continue;
-                 }
-                 
-                 // Remove !important
-                 if(csstidy::is_important($cur_value))
-                 {
-                     $important = ' !important';
-                     $cur_value = csstidy::gvw_important($cur_value);
-                 }
-                 
-                 // Do not add default values
-                 if($cur_value === $default_value)
-                 {
-                     continue;
-                 }
-                 
-                 $temp = csstidy_optimise::explode_ws(',',$cur_value);
-  
-                 if(isset($temp[$i]))
-                 {                    
-                     if($bg_property == 'background-size')
-                     {
-                         $new_bg_value .= '('.$temp[$i].') ';
-                     }
-                     else
-                     {
-                         $new_bg_value .= $temp[$i].' ';
-                     }
-                 }            
-             }
-             
-             $new_bg_value = trim($new_bg_value);
-             if($i != $number_of_values-1) $new_bg_value .= ',';
-         }
-         
-         // Delete all background-properties
-         foreach($background_prop_default as $bg_property => $default_value)
-         {
-             unset($input_css[$bg_property]);
-         }
-         
-         // Add new background property
-         if($new_bg_value !== '') $input_css['background'] = $new_bg_value.$important;
-         
-         return $input_css;
-     }
- }
- ?>