用microsoftAjax.js框架来进行事件监听
<html>
<head>
<script src="MicrosoftAjax.js" type="text/javascript"></script>
</head>
<body>
<div id="layer1" style="background-color:red">
<div name="layer2"> <input type=button value="关闭第2层" > </div>
<div name="layer3"> <input type=button value="关闭第3层"> </div>
</div>
<script type="text/javascript">
Type.registerNamespace("find");
find.layers=function(layers)
{
this._layers=layers;
this._clickDelegate = Function.createDelegate(this, this.alert);
};
find.layers.prototype = {
initialize : function()
{ alert(this._layers);
find.layers.callBaseMethod(this, "initialize");
$addHandler( this._layers, "click",this._clickDelegate);
},
alert : function()
{ alert("i am layer2");}
};
find.layers.registerClass("find.layers", Sys.Component);
alert(document.getElementById('layer1'));
var layer=new find.layers($get('layer1'));
layer.initialize();
</script>
</body>
</html>
