function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	// fuer Opera muessen die div's der Galerienavig. ausgeblendet werden
	if (navigator.userAgent.indexOf("Opera") != -1) {
		opera();
	}
	if (document.images) {
		mini_galerie = newImage("images/mini_galerie.gif");
		mini_kontakt = newImage("images/mini_kontakt.gif");
		mini_kinder = newImage("images/mini_kinder.gif");
		mini_kunstschule = newImage("images/mini_kunstschule.gif");
		mini_mappenvorbereitung = newImage("images/mini_mappenvorbereitung.gif");
		mini_computer = newImage("images/mini_computer.gif");
		mini_dozentin = newImage("images/mini_dozentin.gif");
		mini_erwachsene = newImage("images/mini_erwachsene.gif");
		kunstschule_click = newImage("images/kunstschule-click.gif");
		mappenvorbereitung_click = newImage("images/mappenvorbereitung-click.gif");
		erwachsene_click = newImage("images/erwachsene-click.gif");
		kontakt_click = newImage("images/kontakt-click.gif");
		dozentin_click = newImage("images/dozentin-click.gif");
		computer_click = newImage("images/computer-click.gif");
		kinder_click = newImage("images/kinder-click.gif");
		galerie_click = newImage("images/galerie-click.gif");
		farbbild_Mappenvorbereitung_over = newImage("images/farbbild-Mappenvorbereitung.gif");
		farbbild_Kinder_over = newImage("images/farbbild-Kinder_over.gif");
		farbbild_Erwachsene_over = newImage("images/farbbild-Erwachsene_over.gif");
		preloadFlag = true;
	}
}
function opera() {
	var ebenen = new Array("textfeld","textfeld002","pfeil-rechts","pfeil-links","schatten-oben","textfeld006","textfeld009","textfeld010","bildbeschriftung","galeriebild");
	for (i=0;i<ebenen.length;i++) {
		document.getElementById(ebenen[i]).style.visibility = 'hidden';
	}
}
var search_zaehler = 0;
function empty_all(bild_neu,b) {
	if (location.search && search_zaehler==0) {
	bild_neu = 'danke';
	search_zaehler = 1;
	}
	if (b && bild_alt!='willkommen' && bild_alt!='danke' && bild_alt!='anmelde') document.getElementById(bild_alt).src = "images/"+bild_alt+".gif";
	altesbild(bild_neu);
	var ebenen = new Array("layer","map1","map2","galerieebene","willkommen-text","kunstschule-text","dozentin-text","mappenvorbereitung-text","erwachsene-text","kinder-text","computer-text","kontakt-text","galerie-text","danke-text","anmelde-text");
	for (i=0;i<ebenen.length;i++) {
		document.getElementById(ebenen[i]).style.visibility = "hidden";
	}
	var text = bild_neu+"-text";
	document.getElementById(text).style.visibility = "visible";
}
var bild_alt = 'willkommen';
function wechsel(bild_neu,b) {
	if (!document.all && bild_alt=="galerie" && bild_neu!="galerie") {
			opera();
	}
	(bild_alt=='danke' || bild_alt=='willkommen' || bild_alt=='anmelde') ? bild_alt = bild_neu : altesbild(bild_neu);
	empty_all(bild_neu);
	(bild_neu=="kontakt" || bild_neu=="galerie") ? galerie(bild_neu,b) : changeImages(bild_neu,b);
	layer(bild_neu);
}
function galerie(a,b) {
	var imap = (a=="kontakt") ? "map1" : "map2";
	var text = a+"-text";
	document.getElementById(text).style.visibility = "visible";
	document.getElementById(imap).style.visibility = "visible";
	changeImages(a,b)
}
function altesbild(bild_neu) {
	if (bild_neu!='willkommen' && bild_neu!='danke' && bild_neu!='anmelde') {
		if (bild_alt=='willkommen' || bild_alt=='danke' || bild_alt=='anmelde') {
		document.getElementById(bild_neu).src = "images/"+bild_neu+".gif";
		} else {
		document.getElementById(bild_alt).src = "images/"+bild_alt+".gif";
		}
	}
	bild_alt = bild_neu;
}
function layer(a) {
	document.getElementById("layer").style.visibility = 'visible';
		document.getElementById("bild").src = "images/mini_"+a+".gif";
}
function gal_wechsel(a,b) {
	// Opera setzt hier aus
	// alert ("galwechsel");
	document.getElementById('galerie-text').style.visibility = 'hidden';
	count_move = 0;
	switch(b) {
		case "gal_mappe" : 	var galeriebilder = new Array("map01","map02","map03","map04","map05","map06","map07","map08","map09","map10","map11","map12","map13","map14","map15","map16","map17");
							var bildbeschriftung = new Array("map01-text","map02-text","map03-text","map04-text","map05-text","map06-text","map07-text","map08-text","map09-text","map10-text","map11-text","map12-text","map13-text","map14-text","map15-text","map16-text","map17-text");
			break;
		case "gal_kinder" : var galeriebilder = new Array("kid21","kid20","kid19","kid18","kid17","kid16","kid15","kid14","kid13","kid12","kid11","kid10","kid09","kid08","kid07","kid06","kid05","kid04","kid03","kid02","kid01");
							var bildbeschriftung = new Array("kid21-text","kid20-text","kid19-text","kid18-text","kid17-text","kid16-text","kid15-text","kid14-text","kid13-text","kid12-text","kid11-text","kid10-text","kid09-text","kid08-text","kid07-text","kid06-text","kid05-text","kid04-text","kid03-text","kid02-text","kid01-text");
			break;
		case "gal_erw" :	var galeriebilder = new Array("adu01","adu02","adu03","adu04","adu05","adu06","adu07","adu08","adu09","adu10","adu11");
							var bildbeschriftung = new Array("adu01-text","adu02-text","adu03-text","adu04-text","adu05-text","adu06-text","adu07-text","adu08-text","adu09-text","adu10-text","adu11-text");
			break;
	}
	document.getElementById("galerieebene").style.visibility = "visible";
	if (!document.all) {
		var ebenen = new Array("pfeil-rechts","pfeil-links","schatten-oben","bildbeschriftung","galeriebild");
		for (i=0;i<ebenen.length;i++) {
			document.getElementById(ebenen[i]).style.visibility = 'visible';
		}
	}
	// alert (galeriebilder[0]);
	document.getElementById("galeriebild").src = "images/"+galeriebilder[0]+".jpg";
	var beschriftung = document.getElementById("bildbeschriftung").src = "images/"+bildbeschriftung[0]+".gif";
	bild_alt = a;
	bb = bildbeschriftung;
	gb = galeriebilder;
}
var count_move;
function galerie_go(dir) {
	count_move = richtung(dir);
	var layer = document.getElementById("galerieebene");
	var bild = document.getElementById("galeriebild");
	var beschriftung = document.getElementById("bildbeschriftung");
	layer.style.visibility = "visible";
	bild.setAttribute("src", "images/"+gb[count_move]+".jpg");
	beschriftung.setAttribute("src", "images/"+bb[count_move]+".gif");
}
function richtung(dir) {
	(dir==true) ? count_move++ : count_move--;
	if (count_move>=gb.length) {count_move--} ;
	if (count_move<0) {count_move=0} ;
	return (count_move);
}
var tour;
var room;
function show_room(room) {
	if (room.indexOf('farbbild')==0) {
		tour = 'of';
		changeImages('galerie_map', 'images/'+room+'.gif');
		return true;
	} else {
		switch(room) {
		case '1':	tour = 'on';
			break;
		case 'out':	img_out(tour);
			break;
		}
	}
}
function img_out(tour) {
	if (tour!='on') {
		changeImages('galerie_map', 'images/farbbild.gif');
		return true;
	}
}