[jQuery] Cannot Get JQuery Ajax to work in Google Chrome browser

[Mikedeezy33]

I have a piece of code that updates a script with the page scroll and
time on page when the user closes the page. I have this working in
Firefox and IE, but it will not work in Chrome. Chrome will calculate
the values correctly, but it will not post to the script. I have
narrowed down the problem to being in the JQuery call to the ajax
function. Does anyone know what I am doing wrong here?

var maxScroll = 0;
var pageOpen = new Date();
var currentURL = window.location;
var updateURL = "/wp-content/plugins/extra-tracking/update.php";
var intervalUpdate = false;

  if (intervalUpdate) {
    setInterval( update, 15000);
  }

  jQuery(window).scroll(function(){
      scrollPercent = Math.floor(jQuery(window).scrollTop() / ( jQuery
(document).height() - jQuery(window).height() ) * 100 );
      if (scrollPercent > maxScroll) {
         maxScroll = scrollPercent;
      }
  });

  function update() {
    time = pageTime();
    temp = jQuery.ajax({
          type: "POST",
          url: updateURL,
          data: "pageScroll="+maxScroll+"&pageTime="+time
+"&location="+currentURL
          //success: function(msg){ alert("Page time: " + time + " Page
Scroll " + maxScroll); }
          });
    return false;
  }

  function pageTime() {
    curTime = new Date();
    minutes = (curTime.getMinutes() - pageOpen.getMinutes());
    seconds = (curTime.getSeconds() - pageOpen.getSeconds());
    time = (seconds + (minutes * 60));
    if (time < 0) { time = 0; }
    return time;
  }

jQuery(window).unload( function ()
  {
     endTime = pageTime();
     temp = jQuery.ajax({
          type: "POST",
          url: updateURL,
          data: "pageScroll="+maxScroll+"&pageTime="+endTime
+"&location="+currentURL
          //success: function(msg){ alert("Page time: " + time + " Page
Scroll " + maxScroll); }
          //error: function (xhr, desc, exceptionobj) { alert
(xhr.responseText); }
          });
  } );