var currentMenu = null;

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) return;

	actuator.onmouseover = function() {
		/*if (currentMenu) {
			currentMenu.style.visibility = "hidden";
			this.showMenu();
		}*/
		if (currentMenu == null) {
			this.showMenu();
		} else {
			currentMenu.style.visibility = "hidden";
			currentMenu = null;
		}
	}
	
	actuator.onmouseout = function() {
		if (currentMenu) {
			currentMenu.style.visibility = "hidden";
			currentMenu = null;
		}
	}

	actuator.showMenu = function() {
		menu.style.left = this.offsetLeft + "px";
		menu.style.top = 0;
		menu.style.top = this.offsetTop + this.offsetHeight;
		menu.style.visibility = "visible";
		currentMenu = menu;
	}

}

/* www.gazingus.org */