I have designed a JS module of an events calendar so that users can use my DB and Server for processing and have a calendar show up on thier site.

I am trying to pass queries to the page to allow users to change months/years and to track what site the calendar is being viewed from.   Thats all fine,  but how do I retrieve the query string from the PHP servers end.  if I use $_server['php_self'], I get the server location where the PHP is hosted, not where the originating file was called from.  In essence, I need to be able to pull down whatever is showing in the address bar at that time..  Can't seem to find that anywhere...

Any Ideas?

used the following function to do what I needed.

Have the initial file called be a true .js file, which in turn calls the PHP file.

function GetParam(name)
{
  var start=location.search.indexOf("?"+name+"=");
  if (start<0) start=location.search.indexOf("&"+name+"=");
  if (start<0) return '';
  start += name.length+2;
  var end=location.search.indexOf("&",start)-1;
  if (end<0) end=location.search.length;
  var result=location.search.substring(start,end);
  var result='';
  for(var i=start;i<=end;i++) {
    var c=location.search.charAt(i);
    result=result+(c=='+'?' ':c);
  }
  return unescape(result);
}