alert("Dear Webmaster of "+window.location.hostname+",\n\nPlease download a copy of jquery.js and host it on your own server or use the one Google kindly provided:\nhttp://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js for example.\n\nThank you!");

// You do realize that you're exposing your site to cross-site scripting (XSS) attacks if you just link some js from somewhere that you have no control of, don't you?