Neither:
var response = $.ajax({ type: \"GET\", url: \"http://www.google.de\", async: false, success : function() { alert (this
Actually, you can make cross domain requests with i.e. Firefox, se this for a overview: http://ajaxian.com/archives/cross-site-xmlhttprequest-in-firefox-3
Webkit and IE8 supports it as well in some fashion.