var lastOpened = 0;
var lastString = "";

function menu(whichMenu, whatState, id) {
	if (whatState == "visible") {
		if (lastOpened != 0)
			document.all[lastString].style.visibility = "hidden";
		lastOpened = id;
		lastString = whichMenu;
	} else {
		lastOpened = 0;
		lastString = "";
	}
	if (whichMenu != "" && id!= 0) {
		if (navigator.appName == "Microsoft Internet Explorer") {
			var leftcorner = 0;
			var offset = 132;
			id--;
			if (document.body.clientWidth > 730)
				leftcorner = (document.body.clientWidth / 2) - 366;
			document.getElementById(whichMenu).style.left = leftcorner + 1
					+ offset * id;
			document.all[whichMenu].style.visibility = whatState;
			// Timeout damit Menu automatisch geschlossen wird muss noch gesetzt
			// werden
			// var s = "menu('"+whichMenu+"', 'hidden', "+id+")";
			// window.setTimeout(s, 7000);
		}

		else {
			document[whichMenu].visibility = whatState;

		}
	}
}

function changeButton(name, on) {

	if (on == 1)
		document.images[name].src = "./Menu/button_over.jpg";
	if (on == 0)
		document.images[name].src = "./Menu/button_off.jpg";

}