Your page may fail because jQuery is not loading from your server.
<script type="text/javascript" src="jquery-1.7.2.min.js"></script>
It may fail because abc.js is missing.
<script type="text/javascript" src="abc.js"></script>
It could be that your server does not serve files properly. It could be gremlins.
Do you have a link that others can see?
You should run firefox with firebug open to see errors.
JΛ̊KE