Which will probably change at some point in the future anyway so I'll do it my way and know that it works, I'm not truly convinced by .browser files anyway, they seem a somewhat messy solution to a problem that can be solved by a few lines of code which handles all browsers. Far more efficient in my opinion.

I use code to move the viewstate on web forms and I put the code in that method, this way I have all that form handling functionality in one place instead of having to bother with other elements of the site.