Enabling cross-domain loading and sending in Firefox

XForms with Firefox has a built-in security feature that inhibits users from "cross-domain" loading and sending of instance data. Just like pop-ups, you don't want this to happen by default unless you trust the Web site. You shouldn't have to worry about it since this security feature is on by default, but sometimes you'll want to be able to perform cross-domain loading and sending of instance data with certain Web sites. This tip will show you how.