Browsertyp = parseInt(navigator.appVersion);
Browser = navigator.javaEnabled();
Menu = new Array();
MenuAkku = 0;
MenuSource = 0;

function preloadPics (actual, namePic) {
	if (Browser) {
		Menu[MenuAkku] = new Array(4);
		Menu[MenuAkku][0] = new Image();
		Menu[MenuAkku][0].src = "menu/" + namePic + ".png";
		Menu[MenuAkku][1] = new Image();
		Menu[MenuAkku][1].src = "menu/" + namePic + "_over.png";
		Menu[MenuAkku][3] = actual;
		MenuAkku++;
	}	
}

function on (actual) {
	if (Browser) {
		for (var idx = 0; idx <= MenuAkku; idx++) {
			if (Menu[idx][3] == actual) {
				document.images[Menu[idx][3]].src = Menu[idx][1].src;
				MenuSource = idx;
				idx = MenuAkku;
			}
		}
	}
}

function off () {
	if (Browser) {
		document.images[Menu[MenuSource][3]].src = Menu[MenuSource][0].src;
	}
}

preloadPics ("menu1", "officials");
preloadPics ("menu2", "secrets");
preloadPics ("menu3", "stuff");
preloadPics ("menu4", "staff");
preloadPics ("menu5", "philosophy"); 
preloadPics ("menu6", "logs");