Ajax请求Paypal

Hello i'm trying to make the user visit a Paypal url in the background, but it doesnt seem to work. This is the code

$.ajax({
    crossDomain: true,
    type: "GET",
    url: "http://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=B47NFTANZL5S6",
    succus: function() {
        alert('succus');
    },
    error: function() {
        alert('error');
    },
    complete: function() {
        alert('Complete');
    }
});

You can click this link Paypal link and it will add a item in the checkout. But cant make it work via a ajax request.