template breaks in chrome and firefox

Hi,
I really hope somebody can get me te answer to this as its driving me completely mental.

I have a site that is perfect in IE but broken in chrome and firefox.

I removed the stock css logos and added in my own and adjusted the height to compensate to 225px.

on ie everything lines up but on chrome and firefox it puts and extra 200px of white space undereach graphic pushing the menu down the page. If you look at te layout in f12 in ie the div only has aheight of 15.xpx whereas on chrome it shows as 416px.
I am now way out of my depth as to why and how to fix!
web address is www.davenports-ltd.co.uk.

Any help please!!!!!

thanks
Tony

Hi,
i checked your webstie in IE, FF and chrome. In all browsers it look's same. I haven't any extra space above menu.