I have a ASP.NET button but recently, I replaced it with a standard HTML button ... What I need to do is a postback to an ASP.NET page and ensure a method is called.
Check out this article
http://www.deviantpoint.com/post/2009/03/12/Using-jQuery-UI-Dialogs-for-confirmation-windows.aspx
The basic idea is you place the call back function in a hidden field and run an eval on the $(this).dialog('close');
I used this to have it work in a Gridview, so if you want to know how to do that leave a comment.