封装兼容性添加、删除事件的函数·转载」

<script type="text/javascript">
var EventUtil = {
    addHandler: function (oElement, sEvent, fnHandler) {
        oElement.addEventListener ? oElement.addEventListener(sEvent, fnHandler, false) : oElement.attachEvent("on" + sEvent, fnHandler)    
    },
    removeHandler: function (oElement, sEvent, fnHandler) {
        oElement.removeEventListener ? oElement.removeEventListener(sEvent, fnHandler, false) : oElement.detachEvent("on" + sEvent, fnHandler)
    },
    addLoadHandler: function (fnHandler) {
        this.addHandler(window, "load", fnHandler)
    }
}
</script>

来源：http://fgm.cc/learn/lesson4/08.html