function imgerr(img)
{
img.src='/sitestyle/default/images/unavailable-prod.gif';
}


ref=encodeURIComponent(document.referrer);
landing_path=encodeURIComponent(document.location);

var url="http://www.cheapmattresses.co.uk/includes/track.php"
url=url+"?referer="+ref
url = url + '&landing_path=' + landing_path
url = url + '&rand=' + Math.random()

includeJS(url)


function includeJS(jsPath){
  var script = document.createElement("script");
  script.setAttribute("type", "text/javascript");
  script.setAttribute("src", jsPath);
  document.getElementsByTagName("head")[0].appendChild(script);
}