var startTime = new Date();
startTime = startTime.getTime();
var submissions = 0;

function checkForDuplicate() {
 if (document.form1) {
  document.form1.REFERRER.value = document.referrer;
  document.form1.PLATFORM.value = navigator.appName
   + " " + navigator.appVersion;
  submissions++;
  if (submissions > 1)
   return false;
  else
   return true;
 } else {
  return false;
 }
} 

function doneLoading() {
 var stopTime = new Date();
 stopTime = stopTime.getTime();
 document.form1.LOADING_TIME.value = ((stopTime - startTime) / 1000)
  + " seconds";
 document.form1.PAGE.value = document.title;
 document.form1.SUBMITTER.click(); 
}