AJAX and DataList Triggers

I have a damned problem

I'm Ajaxizing an old .net 2 page.

I have an UpdatePanel with inside a DataList that has, in EditTemplate, a form with lots of dynamic controls with callbacks and the "submit" button.

My problem is that i need to enable the Back Button in browser after the submit, then i try to add a <PostBackTrigger controlid="submit">, but it cannot see the button.

I did many many tries... is there someone that can help me?!

Tnx to all and sorry for my english ^^'

up ^^'