static function sanitizeHtml($txt) {
        // Remove active content and frames
		return preg_replace(array(
	            '@<script[^>]*?.*?</script>@si',
	            '@<object[^>]*?.*?</object>@si',
	             '@<embed[^>]*?.*?</embed>@si',
	            '@<applet[^>]*?.*?</applet>@si',
	            '@</?((frameset)|(frame)|(iframe))@i'
        	),  array(' ', ' ', ' ', ' ', ' '), $txt ); 
	}