var ie = (function(){
     	 
        var undef,
            v = 3,
            div = document.createElement('div'),
            all = div.getElementsByTagName('i');
        while (
            div.innerHTML = '<!--[if gt IE ' + (++v) + ']><i></i><![endif]-->',
            all[0]
        );
        return v > 4 ? v : undef;
     
    }());
        
    // function to trigger change event on dropdown option lists
    function fireEvent(element,event) {
    	if (ie < 9) { //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);
    	}
    }