function initializeMenu(menuId, actuatorId)
{
	var menu = document.getElementById(menuId);
    var actuator = document.getElementById(actuatorId);
    if (menu == null || actuator == null) return;
    actuator.onclick = function()
		{
		    var display = menu.style.display;
            this.parentNode.style.backgroundImage = (display == "block") ? "url('img/iTancat.gif')" : "url('img/iObert.gif')";
            menu.style.display = (display == "block") ? "none" : "block";return false;
        }
}
function openMenu(menuId)
{
	var menu = document.getElementById(menuId);
    menu.parentNode.style.backgroundImage = "url('img/iObert.gif')";
    menu.style.display = "block"; return false;
}