FormTagHelper#submit_tag outputs invalid Javascript for IE

It looks like the submit tag recently got an update to preserve the value of the commit attribute when using the disable_with option. The new behavior works fine in FFox and Safari but breaks in IE due to a limitation in the IE DOM which only allows you set an element's type property once. This restriction doesn't work with cloneNode which sets the type property based on the node you're cloning.

The fix uses createElement to achieve a similar effect to cloneNode.

Patch is attached.

Here's a blog reference (not mine): http://bit.ly/lu873. See the section called "And your type attribute too."