IE Display issues

Hi,

I have recently transferred a site from one server to another – it was working OK on the old server but now it displays OK in FF and all other browsers but IE8 (on certain PC’s and laptops) makes a) the navigation menu for the pages (left-hand side) when click on certain of the menus such as “Our People” or “Timber Framed Solutions” a sub-menu should open (vertically in-line with the main menu and of a lighter colour) on IE8 this does not happen or very briefly appears then disappears.
Also b) when I login to edit in WordPress the layout is all wrong for editing – the menus on the right are all squashed and the dashboard etc all overlays the menus etc.

Anybody have any clues?

http://www.ecoframes.co.uk
http://www.ecoframes.co.uk