Geht es wirklich nicht? XSS um zu prüfen, ob Resource vorhanden

[asdf]

Hallo,

  
var RessourceTester = function(timeout)  
{  
  this.timeout = timeout;  
  
  this.url = function(url, cb)  
  {  
    var timeout;  
    var im           = document.createElement('object');  
    im.style.height  = im.style.width = '1px';  
	  
    im.onload   = function(e)  
    {  
      try  
      {  
        im.parentNode.removeChild(im);  
      } catch(e) { ; };  
	  
      window.clearTimeout(timeout);  
	  
      cb(url, true);  
    };  
	  
    im.data     = url;  
	  
    if (this.timeout)  
    {  
      timeout = window.setTimeout(function()  
      {  
        try  
        {  
          im.parentNode.removeChild(im);  
        } catch(e) { ; };	  
          cb(url, false);  
      }, this.timeout * 1000);  
    };  
	  
    document.body.appendChild(im);  
  };  
};  
  
var cb = function(url, available)  
{  
  (window.console.warn || alert)(url + ' is ' + available);  
};  
  
var testor = new RessourceTester(10);  
testor.url('http://www.google.de/', cb);  
testor.url('http://example.com', cb);  
testor.url('http://www.google.de/asdf', cb);  
testor.url('http://www.example.lol', cb);  

firefox, opera und der battarie machens alle brav.

Tschö