DD Drop Menu missing in PHP

[designastronaut]

I'm fairly new to PHP, and I'm sure there is a simple answer to this...

I've built a navigation with a drop down (header.php) and it works here fine:
http://micketong.com/PSP/header/header.php

but when I open the index.php where the header is contained the menu doesn't work, the images are there but it no longer functions...any idea why this might be happening?
http://micketong.com/PSP/

Any help would be much appreciated...

[designastronaut]

Giured it out, Thanks.