Mega Code Archive
Query form file input field
<![CDATA[
< html>
<head>
<script type="text/javascript" src="js/jquery-1.3.2.js"></script>
<script type="text/javascript">
$(document).ready(function(){
var input = $(":file");
$("div").text(input.length);
});
</script>
</head>
<body>
<form>
<input type="file" />
</form>
<div>
</div>
</body>
</html>
]]>