okay im working on about the fourth or fith build of this site

i have essentially a 3 column layout with the middle column fluid and a navbar floating to the left in the margin, the right margin is left clean (at the moment anyway)

i have a min width of 300px specifyed for the middle column (the margins are set to 197px) when i reduce the size of my browser window once the middle column gets to 300px in moves down the page a few hundred pixels but appart from this acs normally, ie it doesnt get any smaller than 300px

also it seems that the window, no matter what size it is, cannot contain the whole page, you always have to scroll horizontally to see the last 10 or so px, i have all my widths set to 100% so i dont understand why its doing this

if anyone could help me i'd really appreciate it

live example here