This script will enable you to search within a site using Google search.
Cut & Paste Script
<html>
<head>
<title>Google Site Search</title>
<script type="text/javascript">
//Domain name here
var domainname="www.studiesinn.com"
function Googlesitesearch(curobj){
curobj.q.value="site:"+domainname+" "+curobj.sterm.value
}
</script>
</head>