fakeclickdropdown.js

        function fireEvent(element,event)
        {
            if (document.createEventObject)
            {
                // dispatch for IE
                var evt = document.createEventObject();
                return element.fireEvent('on'+event,evt);
            }
            else
            {
                // dispatch for firefox + others
                var evt = document.createEvent("HTMLEvents");
                evt.initEvent(event, true, true );
                return !element.dispatchEvent(evt);
            }
        }

        function setOption(system){
            var obj = jQuery('#attribute225').get();
            jQuery(obj).val(system);
            Event.observe(obj[0],'change',function(){});
            fireEvent(obj[0],'change');
        }