//vorladen	beispiel
var homeon  = new Image();
homeon.src = "../html/img/navi/homeon.jpg";
var homeoff  = new Image();
homeoff.src = "../html/img/navi/homeoff.jpg";

var abouton  = new Image();
abouton.src = "../html/img/navi/abouton.jpg";
var aboutoff  = new Image();
aboutoff.src = "../html/img/navi/aboutoff.jpg";

var showson  = new Image();
showson.src = "../html/img/navi/showson.jpg";
var showsoff  = new Image();
showsoff.src = "../html/img/navi/showsoff.jpg";

var friendson  = new Image();
friendson.src = "../html/img/navi/friendson.jpg";
var friendsoff  = new Image();
friendsoff.src = "../html/img/navi/friendsoff.jpg";

var galleryon  = new Image();
galleryon.src = "../html/img/navi/galleryon.jpg";
var galleryoff  = new Image();
galleryoff.src = "../html/img/navi/galleryoff.jpg";

var extrason  = new Image();
extrason.src = "../html/img/navi/extrason.jpg";
var extrasoff  = new Image();
extrasoff.src = "../html/img/navi/extrasoff.jpg";

var contacton  = new Image();
contacton.src = "../html/img/navi/contacton.jpg";
var contactoff  = new Image();
contactoff.src = "../html/img/navi/contactoff.jpg";

var btn1on  = new Image();
btn1on.src = "../html/img/navi2/btn1on.gif";
var btn1off  = new Image();
btn1off.src = "../html/img/navi2/btn1off.gif";

var btn2on  = new Image();
btn2on.src = "../html/img/navi2/btn1on.gif";
var btn2off  = new Image();
btn2off.src = "../html/img/navi2/btn1off.gif";

var btn3on  = new Image();
btn3on.src = "../html/img/navi2/btn1on.gif";
var btn3off  = new Image();
btn3off.src = "../html/img/navi2/btn1off.gif";

var btn4on  = new Image();
btn4on.src = "../html/img/navi2/btn1on.gif";
var btn4off  = new Image();
btn4off.src = "../html/img/navi2/btn1off.gif";

var btn5on  = new Image();
btn5on.src = "../html/img/navi2/btn1on.gif";
var btn5off  = new Image();
btn5off.src = "../html/img/navi2/btn1off.gif";

var btn6on  = new Image();
btn6on.src = "../html/img/navi2/btn1on.gif";
var btn6off  = new Image();
btn6off.src = "../html/img/navi2/btn1off.gif";

var btn7on  = new Image();
btn7on.src = "../html/img/navi2/btn1on.gif";
var btn7off  = new Image();
btn7off.src = "../html/img/navi2/btn1off.gif";

var btn8on  = new Image();
btn8on.src = "../html/img/navi2/btn1on.gif";
var btn8off  = new Image();
btn8off.src = "../html/img/navi2/btn1off.gif";

var logoon  = new Image();
logoon.src = "../html/img/logo_gruen.jpg";
var logooff  = new Image();
logooff.src = "../html/img/logo.gif";

// functs:
function imgOn(imgName) 
	{
	if (document.images)
		{
		if (document.images[imgName])
			{
			document.images[imgName].src = eval(imgName + "on.src");
			return;
			}
		}
	
	if (document.layers)
		{
		img = findObjNS(imgName);
		if (img != null)
			{
			img.src = eval(imgName + "on.src");
			}
		}
	} 

function imgOff(imgName) 
	{
	if (document.images)
		{
		if (document.images[imgName])
			{
			document.images[imgName].src = eval(imgName + "off.src");
			return;
			}
		}
	
	if (document.layers)
		{
		img = findObjNS(imgName);
		if (img != null)
			{img.src = eval(imgName + "off.src");
			
			}
		}
	} 
function findObjNS(name,doc)
	{
	var i,obj;
	obj = null;
	if(!doc) 
		{
		doc=document;
		}
	if (doc.images)
		{
		if (doc.images[name])
			{
			return doc.images[name];
			}
		}
	if (doc.layers)
		{
		for (i=0; obj == null && i < doc.layers.length; i++)
			{
			obj = findObjNS(name,doc.layers[i].document);
			}
		}
	if (obj != null)
		{
		return obj;
		}
	return null;
	} 
function switchDiv(name)
	{
		if (document.all)
			{	
			if (document.all[name])
					{
					if(document.all[name].style.visibility == "hidden"){
					document.all[name].style.visibility = "visible";
					}
					else
					{
					document.all[name].style.visibility = "hidden";
					}
				}
			}
			
		else if (document.layers)
			{
				if (document.layers[name])
					{
					if(document.layers[name].visibility == "hidden")
					{
					document.layers[name].visibility = "show";
					}
					else
					{
					document.layers[name].visibility = "hidden";
					}
				}
			}
			
			
		else if (document.getElementById)
			{
			if (document.getElementById(name))
				{
				if(document.getElementById(name).style.visibility == "hidden")
				{
				document.getElementById(name).style.visibility = "visible";
				}
				else
				{
				document.getElementById(name).style.visibility = "hidden";
				}
				
				}
			}
		return false;
	}