Submenu not showing on subpages

[rikkibr]

Solved 

Changed Show_Menu2 from
show_menu2(0, SM2_CURR+1,

To

show_menu2(0, SM2_ROOT+1,

[rikkibr]

hello

Can someone tell me why submenu dissapears when I select childpage 

Example:
http://10.is/i/pages/vidbaetur.php (Try clicking a sub page).

Thanks