Calling init method in another method/ Refresh button

Hi,

iam using webdesign ALV table for my development.

i have 2 issues.

1. i have a button called view. Is it possible to call init method inside my view so that everytime when the user clicks view button my init method also executes. Both method are in same view.

2. is it possible to add a refresh button in screen so that it avoids user to press F5.

Thanks

dhinesh.