The following didn't work?
Code:
<page OnHoverIn="Textbox1.Enabled=True Textbox2.Enabled=True" onHoverOut="Textbox1.Enabled=False Textbox2.Enabled=False">
<Textbox name="Textbox1"/>
<Textbox name="Textbox2"/>
</page>
You u just have to make sure the page only encapsulates the height and width of the two text box.
But if you happen to have your mouse over it when you decide to run or jump or what ever, then they will receive focus. The only way around this is to add that enabled or !enabled like Othesus said 2 or 3 post back.
I'd test it for you, but I'm on dial-up ATM and just trying to load the pages here are makin me want to kill myself....