Topanga Skin in %

Been trying to convert to percentages rather than pixels and I think I've got it

(please ignore the colour - I'm concentrating on layout)

It works OK in IE but in Firefox there is a white space above the header bar. Any ideas?

Here's the culprit:

h1#pageTitle {
	margin: 10px 0px 10px 5px;
}

I changed the 10px to a zero and the white space disappeared.

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