var eventUtil = {

    addHandler:function(element,type,handler) {  //添加句柄

        if(element.addEventListener) {

            element.addEventLisetener(type,handler,false);

        }else if(element.atachEvent) {

            element.atachEvent('on' + type + handler);

        }else {

            element['on' + type] = handler;

        }

    },

    removeHandler:function(element,type,handler) {    //删除句柄

        if(element.removeEventListener) {

            element.removeEventLisetener(type,handler,false);

        }else if(element.detachEvent) {

            element.detachEvent('on' + type + handler);

        }else {

            element['on' + type] = null;

        }

    },

    getEvent:function(event) {    //获取事件

        return event?event:window.event;

    },

    getType:function(event) {    //获取类型

        return event.type;

    },

    getElement:function(event) {  //获取元素目标

        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) {  //阻止事件冒泡

        if(event.stopPropagation) {

            vent.stopPropagation();

        }else {

            event.cancelBubble = true;

        }

    }

}