The disable_with option to submit_tag is broken on IE (all versions). The current implementation changes the type attribute of an existing element in javascript, something that is not supported in IE.
I made a patch about a month ago (https://rails.lighthouseapp.com/ projects/8994/tickets/1955-disable_with-option-to-submit_tag-doesnt- work-with-ie#ticket-1955-2). It is still valid for 2-3-stable and master.
It would be great if someone could verify this patch.
Thanks,
Han
