ToggleClass isn't working

ToggleClass isn't working

Hi All
I am trying to get output to show mouseover functionality to change color. But when I remove cursor from DIV element, color isn't changing. Not sure whats wrong I am doing.

I have copied complete code below. Please help me out.



<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title></title>
     
     <script type="text/javascript" src="script/jquery-1.3.2.js"></script>    
     
    <style type="text/css">
        .normallight { background-color:Red;}
        .highlight { background-color:Yellow;cursor:pointer; }         
    </style>
   
</head>
<body>
    <form id="form1" runat="server">
    <div id="1customer"> Customer one   </div><br />
    <div id="2customer" class="normallight"> Customer two   </div><br />
    <div id="3customer" class="normallight"> Customer three   </div><br />
    <div id="4customer" class="normallight"> Customer four   </div><br />
    
       <p id="mySparkline">30, 20, 15, 10, 40</p>
    </form>
    
     <script>
     
        $("[id$='customer']").mouseover(function() {
             $(this).toggleClass("highlight","normallight");
         });

       
    </script>
       
    </script>
</body>
</html>