Not to be nitpicky, but as a so-called HTML purist, not all Javascript is evil, and japhys ideas are very good ones that works for Javascript.

Basically, any time when Javascript is used as a means to force the user's browser to do something, whether it be the magical "no submit" drop down menus, JS-only image maps or navigation trees, disabling the back button, or resizing the window, this is a rather poor use of it and typically reflects about (IMO) 50% of the JS usage out there. OTOH, using it for roll-overs which only enhance the experience rather than are required, are usually considered a good use of JS by HTML purists.

Pretty much, the ground rule is accessiblity; if the HTML + JS makes the page unusable in Lynx, the JS is poorly used. But this idea will not incur that problem.