if (!document.getElementById)
    document.getElementById = function() { return null; }

function initializeMenu(menuId, actuatorId)
{
	var menu = document.getElementById(menuId);
	var actuator = document.getElementById(actuatorId);
        	
	if (menu != null && actuator != null)
	{
		actuator.onclick = function()
		{
			var display = menu.style.display;

			this.parentNode.style.backgroundImage =
			(display == "block") ? "url(/images/plus.gif)" : "url(/images/minus.gif)";

			menu.style.display = (display == "block") ? "none" : "block";

			return false;
		}

		if (menu.getElementsByTagName)
		{
			for (var i=0;i < menu.getElementsByTagName("a").length;i++)
			{
				menu.getElementsByTagName("a")[i].href += "?menu="+menuId;
			}
		}
	}
	
	expandMenu();
}

function expandMenu()
{
	var menuId = document.location.search.substr(6);
	var menu = document.getElementById(menuId);

	if (menu)
	{
		menu.style.display = "block";
	}
}