I just got the javascript book from sitepoint and tried out their version of an expandable menu. it works great and I was able to customize it with the CSS, but now when I use it, the menu pops back to its original state when I go into sublinks. Is there any way to get the menu to remain in the same position it was when the user clicks to a different page?

There was some coding about youareHere, but I didn't understand it all. How should I be labeling my internal pages to make that code work as it should?

Should I use a cookie?
But being a newbie, cookies are nonsensical to me.

Please advise, oh great gurus.

thanks in advance.