var EventUtil = {

    addHandler:function(elm,type,handler){//添加事件

        if(elm.addEventListener){

            elm.addEventListener(type,handler,false);

        }else if(elm.attachEvent){

            elm.attachEvent('on'+type,handler);

        }else{

            elm['on'+'type']= handler;

        }

    },

    removeHandler:function(elm,type,handler){//移除事件

        if(elm.removeEventListener){

            elm.removeEventListener(type,handler,false);

        }else if(elm.detachEvent){

            elm.detachEvent('on'+type,handler);

        }else{

            elm['on'+type]=null;

        }

    },

    getEvent:function(event){//获取e

        return event?event:window.event;

    },

    getTarget:function(event){//获取当前点击对象

        return event.target || event.srcElement;

    },

    preventDefault:function(event){//阻止默认事件

        if(event.preventDefault){

            event.preventDefault();

        }else{

            event.returnValue = false;

        }

    },

    stopPropagation:function(event){//阻止冒泡事件

        if(event.stopPropagation){

            event.stopPropagation();

        }else{

            event.cancleBubble= true;

        }

    }

}