JScript Error With Visual Studio 2008

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C#

Javascript

HTML

VS2012

Hello to all.
I was working in a project with VS2012, in my log-in page I was using a JQuery Script to make some effects over certain images, and in VS2008 it works perfect.

I passed all the project to VS2008 and the project works perfectly, except for the Log-in, there I'm having the following error:

Microsoft JScript runtime error: '$' is undefined

Any idea of how can I solve it? The problem is when debugging, when I start the project from the server I have no problems.

Thanks in advance

Some Code:

<script src="./Scripts/jquery-1.7.js" type="text/javascript"></script>
<script src="./Scripts/jqFancyTransitions.js" type="text/javascript"></script>

<script type="text/javascript">
    $(document).ready(
        function () {
            $('#slideshowHolder').jqFancyTransitions({ width: 394, height: 144 });
        }
        );