function font_change($tags) {
        
        if( ! is_array( $tags ) ) {
            return;
        }
        
        $style = $tags['1'];
        $text = stripslashes( $tags['2'] );
        $type = $tags['tag'];
        
[b]        $style = str_replace( '"', '', $style );
        $style = preg_replace( "[&\(\)\.\%\[\]<>\'\"]", "", preg_replace( "#^(.+?)(?:;|$)#", "\\1", $style ) );[/b]
        
        if( $type == 'size' ) {
            $style = intval( $style );
            
            if( $this->font_sizes[$style] ) {
                $real = $this->font_sizes[$style];
            } else {
                $real = 12;
            }
            
            return "<!--sizestart:{$style}--><span style=\"font-size:" . $real . "pt;line-height:100%\"><!--/sizestart-->" . $text . "<!--sizeend--></span><!--/sizeend-->";
        }
        
        if( $type == 'font' ) {
            $style = preg_replace( "/[^\d\w\#\-\_\s]/s", "", $style );
            return "<!--fontstart:{$style}--><span style=\"font-family:" . $style . "\"><!--/fontstart-->" . $text . "<!--fontend--></span><!--/fontend-->";
        }
        
        $style = preg_replace( "/[^\d\w\#\s]/s", "", $style );
        return "<!--colorstart:{$style}--><span style=\"color:" . $style . "\"><!--/colorstart-->" . $text . "<!--colorend--></span><!--/colorend-->";
    }