EventUtil

var EventUtil = {
    addHandler: function (element, type, handler) {
        if (element.addEventListener) {
            element.addEventListener(type, handler, false);
        } else if (element.attachEvent) {
            element.attachEvent('on' + type, handler);
        }else{
            element['on'+type]=handler;
        }
    },
    removeHandler:function(element,type,handler){
        if(element.removeEventListener){
            element.removeEventListener(type,handler,false);
        }else if(element.detachEvent){
            element.detachEvent('on'+type,handler);
        }else{
            element['on'+type]=null;
        }
    },
    getEvent:function(event){
        return event?event:window.event;
    },
    getTarget:function(event){
        return event.target||event.srcElement;
    },
    preventDefault:function(event){
        if(event.preventDefault){
            event.preventDefault();
        }else{
            event.returnValue=false;
        }
    },
    stopPropagation:function(event){
        if(event.stopPropagation){
            event.stopPropagation();
        }else{
            event.stopPropagation=true;
        }
    }
}