<script src="http://www.heatmapapi.com/javascript/HeatmapAPI.aspx?k=(YOUR HEATMAPAPI KEY HERE)" type="text/javascript"></script>

<script src="http://maps.google.com/maps?file=api&v=2&key=(YOUR GOOGLE KEY HERE)" type="text/javascript"></script>

<script src="http://www.heatmapapi.com/javascript/HeatmapAPIGoogle.js" type="text/javascript"></script>

<script type="text/javascript">
function loadGoogle()
{
 if (GBrowserIsCompatible())
 {
  m = new GMap2(document.getElementById("map"));
  m.addControl(new GLargeMapControl());
  m.addControl(new GMapTypeControl());
  m.setCenter(new GLatLng(39.04, -103.96), 11);
  initHeatmap();
 }
 else
  alert('Your Internet browser is not compatible
    with this website.');
}

setTimeout('loadGoogle()', 1);

function initHeatmap()
{
 // Heatmap Scripts
 try
 {
  var myHM = new GEOHeatmap();
  myHM.Init(400, 300); // Step 1

  var data = new Array();

  // Generate random lat/lon and value points

  for(p=0;p<60;p++)
  {
   var rLatD=Math.floor(Math.random()*1000);
   var rLonD=Math.floor(Math.random()*1000);
   var rValD=Math.floor(Math.random()*10);
   data.push(39+(rLatD/15000));
   data.push(-104+(rLonD/15000));
   data.push(rValD);
  }

  myHM.SetData(data); // Step 2
  myHM.SetBoost(1); // (NEW) Optional, see documentation
  var preUrl = myHM.GetURL(); // Step 3

  // Now render in our Google Map
  var heatmapOverlay = new HMGoogleOverlay(preUrl);
  m.addOverlay(heatmapOverlay);
 }
 catch(e)
 {
  alert(e.Message);
 }
}