How to enlarge a textbox control when it is mouse-overed?

Question

Hi All,

I have a textbox control in my web page with multiline property set to true.

If text is more than the control size, a scroll bar appears to see entire text.

I want to enlarge the textbox control upto the entire text size, overlapping all controls in that page, when mouse is over the textbox control...

How to do this?

Any idea....

Thanks in advance....