Flash webpage - front page keep showing up during transitions?

Hi all,

I’m building a flash webpage - it’s working fine for the most part - however, when I go between pages, the front page shows up (due to always being beneath the empty movie clip maybe?). Would be great if you could take a look below:

http://www.hokkaidotracks.com/sundry/company_profile.swf

let it load, then click ‘introduction’; then click ‘home’ when the ‘introduction’ page has finished loading - you should see the front page in full, before it starts over and re-runs the front page start up sequence again…not dire, but would be great if someone knew what was happening here :pac:!

Many, many thanks in advance!