书上说：
In the original Level 0 event model, when a function is registered as an event handler for a document element, it becomes a method of that document element (as discussed previously in Section 17.1.5.). When the event handler is invoked, it is invoked as a method of the element, and, within the function, the this keyword refers to the element on which the event occurred.
但是下面的情况却不太符合：
<div id= "elmtDiv " onclick= "EventHandler(); "> division element </div>
<script language= "javascript ">
function EventHandler(){
//在此使用this，this引用的是window对象。
}
</script>
是这种写法不属于Level 0的事件模型吗？请高手指点。
------解决方案--------------------
<div id= "elmtDiv " onclick= "EventHandler(); "> division element </div>
仅仅是方法调用，而非事件注册！
以下写法才是，L@_@K
<body>
<div id= "elmtDiv "> division element </div>
<script type= "text/javascript ">
<!--
function EventHandler(){
//在此使用this，this引用的是window对象。
alert(this.tagName);
}
document.getElementById( "elmtDiv ").onclick = EventHandler;
//-->
</script>
</body>
------解决方案--------------------
补充一点onclick= "EventHandler(); "
在被解释的时候被解释成 HTMLElement.onclick=new Function( "EventHandler(); ");