var currentMenu = null;

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

function initializeMenu(actuatorId){
	var menu = document.getElementById(actuatorId+"Menu");
	var actuator = document.getElementById(actuatorId);

	if (menu == null || actuator == null) return;


	actuator.onmouseover = function() {
		if (currentMenu) {
			currentMenu.style.visibility = "hidden";
			this.showMenu();
		}
	}

	actuator.onclick = function() {
		if (currentMenu == null) {
			this.showMenu();
		}
		else {
			currentMenu.style.visibility = "hidden";
			currentMenu = null;
		}

	return false;
	}



	actuator.showMenu = function() {
		menu.style.left = this.offsetLeft + "px";
		menu.style.top = this.offsetTop + this.offsetHeight + "px";
		menu.style.visibility = "visible";
		currentMenu = menu;
	}
}