[jQuery] .ajax GET not working correctly at webhost

[jQuery] .ajax GET not working correctly at webhost


I have this snippet:
function ajaxAdd() {
    $('form').submit(function() {
                 var nick = document.register.nick.value;
                 $(':submit', this).attr('value', 'Adding...');
                 $(':submit', this).attr('disabled', 'disabled');
                 $.ajax({
                         type: 'GET',
                         url: 'data.php',
                         data: 'nick=' + nick,
                         success: function() {
                             $(':submit', this).removeAttr('disabled');
                             $('#status').load('output.php');
                             }
                         });
                    });
}
that is sent when a very simple form (one value and button) is sent.
The thing is, it works on my local webserver, but when I upload it to
my webhost, it wont work. It works if add data.php?nick=Test, then the
data will be added into my database but not when called from .ajax.