function frameCheck() {
 if(!eval(parent["mainFrame"])){
   location.replace("/index.htm?"+escape(location.href));
 }
}

function loadFrame() {
 var URL=unescape(location.search);
 if(URL) {
  frame=eval(frames["mainFrame"]);
  frame.location.replace(URL.substring(1,URL.length));
 }
}