wrapper - width 950px - padding 10px - center
precontent - height 300px - width 940px - use height hack
column1 - width 235px - height 200px - use height hack
column2 - width 235px - height 200px - use height hack
column3 - width 235px - height 200px - use height hack
column1 - width 235px - height 200px - use height hack