var menus = Array('index', 'products', 'playnow', 'videos', 'news', 'parents', 'help');

function hideAllSubMenus(menu) {
	for(x = 0; x < menus.length; x++) {
		obj = document.getElementById('submenu'+menus[x]);
		if(obj)
			obj.style.display = 'none';
	}
}

function hideAllHighlights(menu) {
	for(x = 0; x < menus.length; x++) {
		obj = document.getElementById('menu'+menus[x]+'link');
		if(obj)
			obj.style.background = '';
	}
}

function showMenuHighlight(menu) {
	// Show highlight
	obj = document.getElementById('menu'+menu+'link');
	if(obj)
		obj.style.background = 'url(/_img/header-active.png) bottom center no-repeat';
}

function showSubMenu(menu) {

	hideAllSubMenus();
	hideAllHighlights();
	showMenuHighlight(menu);

	// Show this submenu
	subObj = document.getElementById('submenu'+menu);
	if(subObj) {
		subObj.style.display='block';
	}
}