Testing an “unbreakable” center-column in an otherwise pretty ordinary 3-column. Text-width is limited to 600px in this demo, while the width of this column is unlimited. Thus if one can't get around the use of table-layout for this sort of thing, then this non-table version might be something to concider.
wide content a: 1000px wide.
Lorem ipsum... and so on and so forth.
wide content b: 2000px wide.
wide content c: 1600px wide.