Question

When viewing the click in firebug, the call turns red (i.e. error) but I can’t see the error because the page redirects.

So is it allowed to call a remote website (in my case, its a 1×1 image using a standard url like http://www.example.com/becon).

Answer 1

You are allowed to request images form other domains without issue. Assuming you don’t actually care about doing something with the image (ie you’re doing data collection with the image request) do something like this:

function getImage(url) {
    var tImage = new Image();
    tImage.src = url;
}
$('theElementYoureInterestedIn').bind( 'click', 
   function() { 
       getImage('http://www.theImage.com/img.jpg') 
   }
);

Now, if you’re looking to get something other than an image (HTML for instance), you’ll run into XSS issues.