function updateHrefForAdLinks(e) {
  var div_elements = document.getElementsByTagName('div');
  var containers= new Array();
  for(var i=0; i<div_elements.length; i++) {
    if(div_elements[i].getAttribute('name') == 'ad-container') {
      containers.push(div_elements[i]);
    }
  }
  for(var i=0; i<containers.length; i++) {
    var links=containers[i].getElementsByTagName('a');
    for(var j=0; j<links.length; j++) {
      if(links[j].getAttribute('target').match('blank')){
	var scriptTags = links[j].parentNode.getElementsByTagName('script');
	for(var k=0; k<scriptTags.length; k++) {
	  if(scriptTags[k].getAttribute('src') && scriptTags[k].getAttribute('src').match('fastclick.net'))  {
	    links[j].href = '/bridge?dest_url=' + escape(links[j].href);
	    break;
	  }
	}
      }
    }
  }
}

if(window.addEventListener) window.addEventListener("load",updateHrefForAdLinks,false);
else if (window.attachEvent) window.attachEvent("onload",updateHrefForAdLinks);