如何使用没有浮子的流体中心制作3列布局

I am trying to create a three column layout, with static width sidebars, and a fluid center column. I do NOT want the columns dropping when the page gets too narrow (center column at 250px), I'd like to have the whole thing just freeze, and employ side scrolling. Pretty sure this can't be done with floats. Here is what I have so far:I am trying to create a three column layout, wi