var HIDDEN;
var VISIBLE;

var imgpfad = "../images/";
var butpfad="../images/buttons/";
var isNav = false;
var isDOM=false;
var isIE = false;
var akt;
var obj;
var anzahlbutt = 6;
var anzahlnav = 6;
var currenttab;
var buttlist = new Array;
var navlist = new Array;
var div_object;
var object;
var div_id;

 isNav = (navigator.appName.indexOf("Netscape") >= 0 && parseInt(navigator.appVersion) == 4);
 isNN6 = (navigator.appName.indexOf("Netscape") >= 0 && parseInt(navigator.appVersion) >= 5);
 isIE = (navigator.appName.indexOf("Microsoft") >= 0 && parseInt(navigator.appVersion) == 4);
 isDOM = (document.getElementById);

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.0
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && document.getElementById) x=document.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}


function DivObjStyle(div_id){
	if (!div_id || div_id.length==0){
 		if (isDOM) {div_object = eval("document.style");} 
       		else if (isNav) {div_object = eval("document");}
		else if (isIE) {div_object = eval("document.all.style");}
    	}
    	else {  
    		if (isDOM) {div_object = eval("document.getElementById(div_id).style");}   
    		else if (isNav) {div_object = eval("document." + div_id);}
      		else if (isIE) {div_object = eval("document.all." + div_id + ".style");}
   	}  
   	return div_object;
}
 


function DivObjDocument(div_id){
	if (!div_id || div_id.length==0){
		div_object = eval("document");}
    	else {
       		if (isDOM) {div_obj = eval("document");}  
      		else if (isNav) {div_object = eval("document." + div_id + ".document");}
      		else if (isIE) {div_object = eval("document.all." + div_id + ".document");}
   	}  
   	return div_object;
}     


function swapImg(picname,filename) {
	if (document.layers) {
	document.layers.images[picname].src = butpfad + filename;}
	else if (document.all) {
		document.all(picname).src = butpfad + filename;}
	else if (isNN6){
		document.getElementById(picname).src = butpfad + filename;}
}


function changePic(bild,filename){

// Wenn die ID oder der name ohne Hochkomma übergeben wird,
// ist dies das "Object" und kann direkt mit Eigenschaften belegt werden !!

	bild.src= butpfad + filename;
}



function highsub(name,n) {
	pic = (name + n);
	if (document.layers) {
		document.layers.images[pic].src = butpfad + "gruen.gif";}
	else if (document.all) {
		document.all(pic).src = butpfad + "gruen.gif";}
	else if (NN6){
		document.getElementById(pic).style.src = butpfad + "gruen.gif";}
}


function normsub(name,n) {
	pic = (name + n);
	if (document.layers) {
		document.layers.images[pic].src = butpfad + "rot.gif";}
	else if (document.all) {
		document.all(pic).src = butpfad + "rot.gif";}
}



function mausover(bild,nr) {
	bild.src= butpfad +"unten"+nr+".jpg";
	div_id="pic"+nr;
 	showObject(div_id);
}


function mausout(bild,nr) {
	if (nr != akt)  {bild.src=butpfad+"norm"+nr+".jpg";}
	div_id="pic"+nr
 	hideObject(div_id);
}


function showObject(div_id) {
	object=DivObjStyle(div_id)
	if (currenttab) {DivObjStyle(currenttab).visibility = "hidden";}
	if(object) {object.visibility = "visible";}
}
 
 
function hideObject(div_id) {
	object=DivObjStyle(div_id)
	if (object){object.visibility = "hidden"; }
 	if (currenttab){DivObjStyle(currenttab).visibility = "visible";}
}


function changeObject(div_id) {
	object=DivObjStyle(div_id)
	if (currenttab) {DivObjStyle(currenttab).visibility = "hidden";}
	if(object) {object.visibility = "visible";}
	currenttab=div_id
}
 





function init(aktuell){
	div_id="nav"+aktuell;
	currenttab=div_id;
	showObject(currenttab);

}