100% width div for browser width
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I am trying to add two divs inside the parent div, which has a button inside each div.
I need to fix the width in pixels only for the second div and the 1st div should be having width in % so that the button inside the 1st div should be covering the entire space of the browser.

I need all the widths in % and also I don't want to change either html structure and css because it is already implemented so i just need changes in css property.

Here is my demo
http://jsfiddle.net/zuyyT/2/

P.S : When I scale the browser, the second div is coming in next line. Please scale it and check once.