Hi, as far as I can see there are 2 issues with that page – you don’t need this:
<!-- SmartMenus jQuery init -->
<script type="text/javascript" src="jquery.smartmenus.min.js"></script>
because you already have it linked here:
<!-- jQuery Loader -->
<script type="text/javascript" src="/smartmenus/libs/jquery/jquery.js"></script>
<script type="text/javascript" src="/smartmenus/jquery.smartmenus.min.js"></script>
The other issue is that the following returns 404:
<link href="/smartmenus/css/sm-clean/sm-clean.css" rel="stylesheet" type="text/css">
Apart from these, I don’t understand your question about subDomain1, subDomain2 and main domain. I guess you just need to make sure all your linked script and CSS files do not return 404 errors and are loaded correctly.
Cheers!