var page_url = document.URL;
var position = page_url.search(/\?/);
// var character = page_url.charAt(position);
if(position < 0)
   {
      var quest_mark = "?";
      page_url += quest_mark;
   }
var referPg = new Array();
referPg = page_url.split("?");
if(referPg[1].length > 0)
   {
      document.write('<input type="hidden" value="' + referPg[1] + '" name="linkfrompg">');
   }