jQuery validationengine IE7 issue

问题:

I am facing an issue with jquery validationengine plugin. The error is for IE7 browser only. Works fine on IE8, Mozilla Firefox and Chrome.

Here is what I am getting on IE7 - error : jQuery.validationEngine rules are not loaded, plz add localization files to the page.

Code :
<script src="js/languages/jquery.validationEngine-en.js" type="text/javascript" charset="utf-8"></script>
<script src="js/jquery.validationEngine.js" type="text/javascript" charset="utf-8"></script>
<link rel="stylesheet" href="css/validationEngine.jquery.css" type="text/css"/>

<script type="text/javascript">
jQuery(document).ready(function() {
    // binds form submission and fields to the validation engine
    jQuery("#frm_contactus").validationEngine({promptPosition : "topLeft"});
});
</script>

I did some debugging using firebug. All the required JS files are loaded properly.