[jQuery] var divcount = $("div#div2").length; --- returns wrong value

[jQuery] var divcount = $("div#div2").length; --- returns wrong value


My alert always returns "1" as the divcount value ???
What's up with that.. I have read and tried bunches of things.
What am I missing ????
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en-AU">
<head>
<title>Jquery Test</title>
<script type="text/javascript" src="jquery-1.3.js"></script>
<script type="text/javascript">
$(function() {
var divcount = $("div#div2").length;
alert("start=" + divcount);
});
</script>
</head>
<body>
<div id="div2">asdf</div>
<div id="div2">asdf</div>
<div id="div2">asdf</div>
</body>
</html>