My Last Post on HTML (Honest)
I promise I really will blog about Django and Flex again soon!
There are some major faults with my column-HTML posts below: "If I have seen further it is by standing on the shoulders of giants." -- Newton
Of course, the key part of the quote is that it is a wise move to find some giants and stand on their shoulders. In my case I stood around on tiptoe trying to see as far as possible because I couldn't immediately find a friendly giant to stand on. Thanks for everyone who commented and pointed out where the giants hang out.
So, in summary:
To put columns in any order, don't do the complex nesting stuff I recommended in this post, instead, use negative margins, as described here.
And secondly, don't use a zero pixel div with clear:both that I blogged here, use overlap:hidden in the outer div instead.
So basically, do it differently to the way I said :D
Thanks again everyone for the help.