var diggurl = '';
       var req =  new Ajax.Request(diggurl,{
         method: 'get',
         evalJSON: 'force',
         contentType: 'application/json',
         onSuccess: function(r){
  "IT WORKED!");
         onFailure: function(r){
Pretty simple code, this URL works in the browser but here it fails. I think I'm probably making an obvious mistake, but for the life of me I can't figure out what it.

I run this and every time I get the IT FAILED message. I have tried escaping my forward slashes, even replacing them with %2F and it doesn't matter. Obviously my problem is elsewhere. Any ideas?