KeyboardShrinksView not responding in webview

when i press text field keyboard pops up and with it the header footer changes position. and when pops down header comes to middle of the screen by shrinking size of webpage.
Fixed that issue By installing CDVKeyboard.m,.h files with js from Git repository.But now my header footer shrinks down to some size .scrolling looks sluggish when keyboard is up. How to solve this problem ?