AJAX, JSONP CLASSIC ASP returning data Cross-domain

I want to be able to run a javascript like this: $.ajax({ type: "GET", url: "<[login to view URL]>", dataType: "jsonp", crossDomain: true, success: function(data){ //WHATEVER I NEED TO DO HERE } }); The asp page will only return 1 item which will be id. The id will be equal to a integer. You must have code samples of exactly how I do this in ASP and what my javascript must look like to retrieve that information (the id).