Pop up box/window

[eluser]Jason Stanley[/eluser]
You using jQuery?

Code:

$('#someId').click(function(e) {
  e.preventDefault();
  $.ajax({
    'location':'some_controller/path',
    'success':function(html) {
        $('body').append(html);
    }
  });
});

Then just make some controller to output the code you pasted above. The click is clicked, jQuery catches the action and loads whatever is in your control. You can then use CSS to make sure it appears as a pop up.