[jQuery] Problem with logging form using the 'jQuery Form Plugin'

Good evening,
I'm trying to code a logging form, but I have a problem redirecting
the user to another page. The problem is that the page I want to
redirect to is being loaded in the background, like it was an Ajax
call (I've seen it thanks to the Firefox plugin Tamper Data).
That's the code I'm using:
$(document).ready(function() {
var options = {
    beforeSubmit: ValidateForm,
success: Logging,
dataType: 'json'
};
$('#login').submit(function() {
$(this).ajaxSubmit(options);
return false;
});
});
function Logging(data) {
    if(data.login != "true") window.location = "user.html"; //This page
is loaded as an Ajax call and isn't shown
    else ShowError("Username or password incorrect");
    return false;
}
Hope someone will know how to fix it or a better way to do it. Thank
you very much!
Dani