No problem. When it works in IE and NS6, but not in NS4 (and, I think, 3) - it's always table not closed. :-)
I agree with Roger - keep your code clean. Also, try formating PHP output - it'll be easier for you (or anyone else) to debug it. I'd never find that table thing if I didn't know it in advance... (I would, but not without some good tool :-))