Firefox pop-under

Question

I have a simple page:

Answer 1

so i've actually hacked away and got something somewhat working in Firefox. i have to say that this was very fast and very ugly, but i don't think i've ever given a good (or even decent) answer on here so may as well try to start. :P also, i should state that i'm triggering the pop under on submission of a form but you could trigger it on page load if you wanted. i have the booleans in there to ensure it doesn't pop under more than once. if anyone wants to clean up my code and show a more straight forward solution (i.e. without multiple booleans/functions and the setTimeout) i'm sure we'd all be grateful.

var submitted = false;
var redir = false;
function do_window_location() {
    if(submitted == false) {
        $('form').submit();
        submitted = true;
    }
    window.location = 'http://www.google.com';
}
function call_window_location() {
    if(redir == false) {
        setTimeout('do_window_location()', 100);
        redir = true;
    }
}
$('document').ready(function() {
    $('form').submit(function() {
        if(submitted == false) {
            call_window_location();
            $(this).submit();
            submitted = true;
        }
    });
    return true;
});

hope this helps someone in some fashion.