不工作jQuery.get（）

$.get('./mods/webim_offline_email.php', {firstname: $('#webim_firstname').val(), email: $('#webim_email').val(), message: $('#webim_message').val()}, function (data){
    alert(1);
    $('#webim_offline_inputs').fadeOut(200);
    $('#webim_message_div').fadeOut(200);
    $('#webim_buttons').fadeOut(200);
    $('#webim_offline_sent').fadeIn(200);
}).success(function(){
    alert("second success");
}).error(function(){
    alert("error");
}).complete(function(){
    alert("complete");
});

Request *.php passes, and all that is inside a function works. On the computer friend request passes too, but jQuery believes that he is not passed, the function is not passed and the alert("error"). Why?

Issue was settled. Sorry. Friends have links without port, and the answer don't came from the page.