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                        /jQuery基礎(chǔ)(三)—事件篇

求問(wèn)大神，我自己寫的一個(gè)導(dǎo)航，為什么這樣寫點(diǎn)擊菜單并沒(méi)有切換樣式效果?

<!DOCTYPE?html>
<html>
<head>
?<title></title>
?<script?type="text/JavaScript"?src="scripts/jquery-1.5.2.min.js"></script>
?<!--css?code-->
?<style?type="text/css">
??#navigation?div{
???height:15?px;
???width:auto;
???/*border*/
???border-left:2px?solid?black;
???border-top:2px?solid?black;
???border-bottom:2px?solid?black;
???/*margin?padding*/
???margin-right:0px;
???margin-left:0px;
???padding-left:5px;
???padding-right:5px;
???display:inline;
???float:left;
???/*shadow*/
???box-shadow:3px?4px?2px?black;
??}
??#e_last{
???border-right:2px?solid?black;
??}
??.menuActive{
???background-color:?#6fa8dc;???
??}
?</style>
</head>
<body>
?<!--html-->
?<div?id="navigation">
??<div?class="menuActive">Home</div>
??<div?>Tech?blogs</div>
??<div?>Life?blogs</div>
??<div?id="e_last">Email?me</div>
?</div>
?<!--js?code-->
?<script?type=type="text/JavaScript">
??//active?menu
??$("#navigation?div").click(function(){
???var?$this=$(this);
???$this.toggleClass("menuActive");
??});
?</script>
</body>
</html>