public static function Option( $value, $label, $selected = NULL, $disabled = NULL, $class = NULL )
	{
		if( !( $value != "_selected" && $value != "_groupname" ) )
			return "";
		$attributes	= array(
			'value'		=> $value,
			'selected'	=> $selected	? "selected" : NULL,
			'disabled'	=> $disabled	? "disabled" : NULL,
			'class'		=> $class,
		);
		return UI_HTML_Tag::create( "option", htmlspecialchars( $label ), $attributes );
	}