title: Reverse engeering cross domain POST requests which use Ext.Ajax.request
body: <p>I'm working with a script which seems to use <code>Ext.Ajax.request</code> (with ExtJS 3) to send cross-domain requests - some of them POST requests. Considerations are being made to move away from ExtJS3 (perhaps move away from ExtJS in general) but a quick attempt at using <code>XMLHttpRequest</code> didn't work; how can I find out what technique is being used to send those cross domain requests?</p>