Problem with rollovers

[finch21]

im havn trouble wit mi menu. it worcs fine on tha 1st page, but wen i flic 2 tha about page then back again it doesnt refresh tha menu.i have used an invisible button, so wen u rollover the menu opens out. is there sum code i can use 2 make this menu refresh. u wil c wat i mean if u chec tha site out.cheers site