gistfile1.txt

var AjaxTracker = {
  
  PENDING_REQUESTS: $A([]),
  
  onCreate: function(request){
    if (!request.url.match(/gadgets\/js\//)) {
      this.PENDING_REQUESTS.push(request.url);
    }
  },
  
  onComplete: function(request){
    this.PENDING_REQUESTS = this.PENDING_REQUESTS.without(request.url);
  },
  
  onException: function(request, exception){
    try {
      this.onComplete(request);
    }catch(e){
      if (Prototype.isFireBugsEnabled) {
        console.log("Got Exception on request: " + request.url);
        console.log(e);
        throw(e);
      }
    }
  },
  
  allAjaxComplete: function(includeCardSummary){
    var requests = this.PENDING_REQUESTS.reject(function(url) {
        return url.match(/cards\/card_summary/) || url.match(/also_viewing/);
      });
    return requests.size() == 0;
  }
};

Ajax.Responders.register(AjaxTracker);