How to enable scrolling when input panel is open in windows phone 7

Question

Hi all
I am developing application for windowns phone 7. On the screen I have created a scroll viewer and inside that placed 4-5 text boxes and one button at the end. Now when I enter data for first text box, input panel gets opened. Now unless and until I close the panel,  I can not scroll further. I want the functaniolality that I even when the panel is open I can scroll and can click the last button.

Note: I am creating all the controls at runtime. Controls are not created by drag and drop the control from tool box.

Regards,
Krishna