function showMenu(menu) {
	var flag = true;
	var submenu = getStyleObj("submenu"+menu);
	if (submenu.display == "block") flag = false;
	closeMenus();
	if (flag) openMenu(menu);
}

function closeMenus() {
	for ( i=1; i<=numMenus; i++) {
		var submenu = getStyleObj("submenu"+i);
		if (submenu) submenu.display = "none";
		var nav = getObj("nav"+i);
		if (nav) nav.className = "";
	}
}

function openMenu(i) {
	var submenu = getStyleObj("submenu"+i);
	if (submenu) submenu.display = "block";
	var nav = getObj("nav"+i);
	if (nav) nav.className = "selected";
}



function initMenu()
{
	menuclass = document.getElementById('mainmenu').className;
	split = menuclass.indexOf(' ');
	
	numMenus = menuclass.substr(4, split-4);
	curMenu = menuclass.substr(split+5, menuclass.length);
	
	if ( curMenu != 0 )
	{
		showMenu(curMenu);
	}
}

var numMenus = '';
handleEvent(window, 'load', initMenu);