The jqgrid table have a scrollbar

I want to set a height of jqgrid table based on screen resolution

Currently I have set the height in pixel.

We have an requirement that page should not display vertical scrollbar

We have to set the jqgrid table height such that the page does not display vertical scrollbar

Currently we have a screen resolution of 1280 * 1024 and the page does not display any vertical  scrollbar.

But if user change the screen resolution to 1280 * 768 then the html page display vertical  scrollbar

we want to change the jqgrid table height so that the jqgrid table display less rows with jqgrid table vertical scrollbar.

I have tried the option 

height : 100% and 'auto' but in both case page is displaying vertical scrollbar

Please reply

Thanks,

Viral Gala