makePixelRequest("https://ad.doubleclick.net/activity;src=4297906;type=invmedia;cat=caa7r9tn;ord=1?", "image");
function makePixelRequest(pixelURL,pixelType){
    if(pixelType == "javascript")
    {
      document.write('<script src="'+pixelURL+'" type="text\/javascript"><\/script>');
    }
    else
    {
      var img = new Image();
      img.src = pixelURL;
    }
}