Flash buttons -> pass session id. Please help

Firstly I wanna say sorry if the question is out of place or if the question is retardedly stupid.

So … I wanna make a Oscommerse website and in the part where I put buttons I wanna changed them to flash buttons. Till then I do everything right. I use a program called FMF (Flash menu factory) which works grate and dose a lot of cool buttons. I put them on my oscommerce website, but the ugly part comes when I click on … lets say “New product” I loose the session ID which causes the shopping cart to get empty. I really dont know how to pass the session id to the flash links and I need to do it badly. Thanks in advance!

Best regards,