[Javascript] Some small problems with simple "drop down"

[lists at dwsasia.com (Peter Lauri)]

Hi group,

On http://asiaforestry.devdws.com you will find a menu that I have been
trying to create. It works fine except that it sometimes "hacks" some when
it should not. I use the property onMouseOver and onMouseOut to trigger
these functions. When I hover the main menu section the corresponding
submenu will be shown (if hovered for 0.7 seconds or more). And if you leave
the main menu area for more then 7 seconds the original menu will be shown.
Most of the "errors" come when I am in the region Calculator and FAQ section
and in Firefox. 

Is this as good as it can get? Or can I improve it more?

This is the JavaScript:

function startdropdown(submenuid) {
	t=setTimeout("activatedropdown("+submenuid+")",500);
}

function stopdropdown() {
	clearTimeout(t);
}

function activatedropdown(submenuid) {
	hideSubMenus();

	document.getElementById("subMenu"+submenuid).className = "";
	document.getElementById("mainMenu"+submenuid).className =
"selected";
}

function hideSubMenus() {
	for(i=1; i<=7; i++) {
		document.getElementById("subMenu"+i).className =
"subMenuHidden";
		document.getElementById("mainMenu"+i).className = "";
	}
}

function startNotActiveTimer(submenuid) {
	p=setTimeout("activatedropdown("+submenuid+")",7000);
}

/Peter

www.lauri.se www.dwsasia.com