<script>

var btn6 = document.getElementById('btn6');

function shouMas(){

alert('这是跨浏览器事件')

}

var eventUtil = {

//添加句柄

addHandler:function(element/*给谁添加*/,type/*添加类型*/,handler/*句柄，触发了什么操作*/){

if(element.addEventListener){

element.addEventListener(type,handler,false);

}else if(element.attachEventer){

element.attachEventer('on' + type,handler);

}else{

element['on' + type] = handler//element.onclick === element['onclick']

}

//删除句柄

removeHandler:function(element,type,handler){

if(element.removeEventListener){

element.removeEventListener(type,handler,false);

}else if(element.detachEventer){

element.detacheEventer('on' + type,handler);

}else{

element['on' + type] = null;//element.onclick === element['onclick']

}

}

}

}

eventUtil.addHandler(btn6,'click',showMas);

</script>