function expandMenuCategory(id)
{
//	alert(id);
	toggleActive('category_menu_'+id);
	toggleVisible("category_menu_arrow_"+id);
	toggleVisible("category_submenu_"+id);
}

function toggleVisible(id)
{
	if (object = document.getElementById(id)) {
		if (object.style.display == 'none')
		{
			object.style.display = 'block';
		} else {
			object.style.display = 'none';
		}
	}
}

function toggleActive(id)
{
	object = document.getElementById(id);
	if (object.className == "active") {
		object.className = "";
	} else {
		object.className = "active";
	}
}