/**
*@singleton method used to instantiate class object
*@access public
*@return EEH_Qtip_Loader instance
*/
public static function instance()
{
// check if class object is instantiated
if (self::$_instance === NULL or !is_object(self::$_instance) or !self::$_instance instanceof EEH_Qtip_Loader) {
self::$_instance = new self();
}
return self::$_instance;
}
