I know this post is a little old, but for the sake of people (like me) who google it, because they have the same problem:
It does not matter that the markup is generated by HTML, but you cannot use AJAX to submit the form (and must work around some other restrictions to mark it work on IE).
You can fake the AJAX request (likt Ext does for the file upload).
I wrote a little blog about the solution: http://fit4dev.wordpress.com/2011/08...word-managers/