Control Problem

[Vivek Sharma]

Hi,

I have a web user control "A" that contians a textbox and a button. On the
click of the button It opens a pop up window with a calculator. After a
calculation is done the textbox on control "A" is populated. I created 2
instances of Control "A" on my page. When I click the button on any instance
the popup form always populates the textbox in first instance. Why? Please
help.

Thanks

Vivek