function submenu(index) {
	var mainitem = 'mainitem' + index;
	var subitem = 'subitem' + index;
	var mainmenu = document.getElementById(mainitem);
	var submenu = document.getElementById(subitem);	
	if (mainmenu.className != 'mainhover') {
		mainclass = mainmenu.className;
		mainmenu.className = 'mainhover';
		mainmenu.style.zIndex = '10';
	} else {
		mainmenu.className = mainclass;
		mainmenu.style.zIndex = '2';
	}
	if (submenu.innerHTML != "") {
		if (submenu.style.visibility == 'hidden') {
			submenu.style.visibility = 'visible';
			submenu.style.zIndex = '9';
		} else {
			submenu.style.visibility = 'hidden';
			mainmenu.className = mainclass;
			submenu.style.zIndex = '1';
		}
	}
}

function subsubmenu(subindex) {
	var subsubitem = 'subsubitem' + subindex;
	var subsubmenu = document.getElementById(subsubitem);
	if (subsubmenu.innerHTML != "") {
		if (subsubmenu.style.visibility == 'hidden') {
			subsubmenu.style.visibility = 'visible';
			subsubmenu.style.zIndex = '10';
		} else {
			subsubmenu.style.visibility = 'hidden';
			subsubmenu.style.zIndex = '1';
		}
	}
}