I have a clear idea what I want to do... and no idea how to implement it.

I have a template-based HTML site, with a jump menu serving as navigation between pages. (The jump menu is part of the template-master and thus easily updated across the site.)

Right now, when you jump to a new page, the first option in the menu is always selected, but it would be better if whatever page was current, was the selected option in the menu.

So that's my question:
How could I dynamically set the 'selected' property of the jump menu, depending on which page was current?

Could I use javascript? or ASP?