这段jquery入门代码,书上的,不能运行,新手求救
<html>
<head>
<title>jQuery - Hello jQuery</title>
<script src="Static/common/js/jquery-1.4.4.js" type="text/javascript"></script>
<script type="text/javascript">
     var thisPage = {
         initialize: function () {
             this.initializeDom();
             this.initializeEvent();
         },
         initializeDom: function () {
             this.$btnShow = $("#btnShow");
         },
         initializeEvent: function () {
             this.$btnShow.bind("click", function(event) {
                 $("#divMsg").toggle(300);
             });
         }
     }
     $(thisPage.initialize());
</script>
</head>
<body>
<input id="btnShow" type="button" value="Say Hello to jQuery world" />
<div id="divMsg" style="border:1px dotted #3c3c3c; display:none; width:400px;">Hello jQuery!</div>
</body>
</html>
------解决方案--------------------JScript code
//$(thisPage.initialize());
$(function(){thisPage.initialize()});
//或者
$(document).ready( function() {
    thisPage.initialize();
});
------解决方案--------------------
那是因为对象调用的时候还不存在