JQuery is not loading in an iframe in IE7?

JQuery is not loading in an iframe in IE7?

I have two different web applications in different domains. in web app1, i
have an iframe and its src refers a page which is in web app2.The page
which needs to be loaded in an iframe has some JQuery.But the problem is
it is not loading in an iframe. But if i access the same page in the same
web app2 then it is working fine. It works fine in Fire fox and the issue
is only with IE. am using IE7.
I have below code in the page which needs to be rendered in an iframe.
<script
src="http://ajax.googleapis.com/ajax/libs/jquery/1.5.2/jquery.min.js"
></script>
<script
src="http://ajax.aspnetcdn.com/ajax/jquery.validate/1.11.0/jquery.validate.js"></script>
Am i doing anything wrong here? Please help me!
Thanks!