Frontpage menu anchor link problem

Hi

We have 9 items/module links on our Frontpage/Onepage and they all work when you do a cache clean or visit the page first time, but if you go to a subpage and go back to frontpage the these links are dead/don't scroll :

#gkBottom1-8
#gkBottom1-9

Same problem if you visit the frontpage and return later

Why is that?

www.hadbergs.dk/frisor/

All links work fine in my testing but I haven't seen any subpages other then weblinks under links menu.

Try and click on one of the image/links (etc. #gkBottom1-1 then click image and go back to frontpage)

After that in Firefox Link 1-8 and 1-9 goes cold