Php - database commuication: URGENT! :)

Hey,

i’m making a site for a company and it has to be finnished in 2 days, hence the URGENT :D.

I’m using flash, php and mySQL and get a very strange error.
KLIK HERE TO OPEN THE SITE
If you open my site in internet explorer and select and object from the menu, everything works. Then in the new page you press “HOME” and you are back at the first screen. Everything works you think, NO, if you try a link now, it won’t work!!!
I just can’t see how this is prossible, and in mozzila it doesn’t happen.

Sry for bad english!

Best Regards,
Raf