I use an Ajax request to download xml data from Google's Spreadsheet API. The Google server only allows 'GET' requests. However, for some reason when I create an Ext.Ajax.request to an external url (i.e. one that starts with http://), Ext uses method "OPTIONS" instead of "GET", resulting in a 405 method denied from Google. Even when explicitly method: "GET" is set in the Ajax.request config, it still uses method OPTIONS. How do I prevent this?