function show(ebene){
	  isOver=true;
  	if(NS4 ) {
    		if (document.layers["back"] && document.layers["back2"] && document.layers["back3"]) {
      			document.layers['back'].visibility="show";			
      			document.layers['back2'].visibility="show";
      			document.layers['back3'].visibility="show";
    		}
    		if (document.layers[ebene]){ 
		   		   document.layers[ebene].visibility="show";
      		}
  return true;
	  } else if (IE4) {
		    if(document.all["back"] && document.all["back2"] && document.all["back3"]){
			      document.all['back'].style.visibility="visible";
			      document.all['back2'].style.visibility="visible";
      			document.all['back3'].style.visibility="visible";
    		}
		    if(document.all[ebene]){
      			document.all[ebene].style.visibility="visible";	
    		}
  return true;
	  } 	else if(NS6) {
    		if(document.getElementById('back') && document.getElementById('back2') && document.getElementById('back3')){
      			document.getElementById('back').style.visibility="visible";
      			document.getElementById('back2').style.visibility="visible";
      			document.getElementById('back3').style.visibility="visible";
    		}
    		if(document.getElementById(ebene)){
      			document.getElementById(ebene).style.visibility="visible";
  		  }
	  return true;
  } else {
	  return true;
  }
}
function hide(ebene){
  	if(NS4) {
    		if(document.layers["back"] && document.layers["back2"] && document.layers["back3"]){
      			document.layers['back'].visibility="hide";
      			document.layers['back2'].visibility="hide";
      			document.layers['back3'].visibility="hide";
    		}
    		if(document.layers[ebene]){		
      		document.layers[ebene].visibility="hide";		
    		}
		  return true;
	  }	 	else if (IE4) {
    		if(document.all["back"] && document.all["back2"]){			
      			document.all['back'].style.visibility="hidden";
      			document.all['back2'].style.visibility="hidden";
      			document.all['back3'].style.visibility="hidden";
    		}
    		if(document.all[ebene]){
      			document.all[ebene].style.visibility="hidden";
    		}
  return true
  	}	  	else if(NS6) {
    		if(document.getElementById('back') && document.getElementById('back2') && document.getElementById('back3')){
      			document.getElementById('back').style.visibility="hidden";
      			document.getElementById('back2').style.visibility="hidden";
      			document.getElementById('back3').style.visibility="hidden";
    		}
    		if(document.getElementById(ebene)){
			     			 document.getElementById(ebene).style.visibility="hidden";			
    	}
  return true;
  } else {
  return true;
  }
}
var old;
var old1;
var oldmem;
var oldsub;
var oldsub1;
var isOver=false;
var oldArrow;
var selectNum = 1;
function menu(ebene, imgName,imgSrc){
  	if (old) {
    		hide(old);
    		if (oldArrow && oldArrowSrc) {
      	var arrowOffSrc = oldArrowSrc + "__off,property=image.gif";
      			SwitchImage (arrowOffSrc,oldArrow);
      			
    		}  
  		old=null;
  		oldArrow="";  
  		oldArrowSrc="";  
  		submenu();
  	}
  	isOver=true;
  	if (ebene) {
    		if (imgSrc && imgName) {
     			 var arrowOnSrc = imgSrc + "__on,property=image.gif";
     			 			SwitchImage(arrowOnSrc , imgName);
     			 			oldArrow=imgName;    
     			 			oldArrowSrc=imgSrc;  
    		}
    		show(ebene);		
    		old=ebene;
  	}
}
function submenu(ebene){
		if(oldsub)	{
    				hide(oldsub);
    				oldsub="";
  		}
	  	if(oldsub1){
			hide(oldsub1);
			oldsub1="";
		}
  		if (ebene == "none")	{
    			show(old);		
    			return true;
  		}
  		if(ebene)	{
    				show(ebene);		
    				oldsub=ebene;	
  		}
}

function submenu1(ebene){
		if(oldsub1)	{
    				hide(oldsub1);
    				oldsub1="";
  		}
  		if (ebene == "none" && old1)	{
    			show(old1);		
    			return true;
  		}
  		if(ebene)	{
    				show(ebene);		
    				oldsub1=ebene;	
  		}
}
function showLanguageLayer(layer){
	if(NS4 ) 
	{
    	if (document.layers["languageLayer1"] && layer != "languageLayer1") {
      			document.layers['languageLayer1'].visibility="hidden";			
      	}
		if (document.layers["languageLayer2"] && layer != "languageLayer2") {
      			document.layers['languageLayer2'].visibility="hidden";			
      	}
		if (document.layers["languageLayer3"] && layer != "languageLayer3") {
      			document.layers['languageLayer3'].visibility="hidden";			
      	}
		if (document.layers["languageLayer4"] && layer != "languageLayer4") {
      			document.layers['languageLayer4'].visibility="hidden";			
      	}
		if (document.layers["languageLayer5"] && layer != "languageLayer5") {
      			document.layers['languageLayer5'].visibility="hidden";			
      	}
		if (document.layers["languageLayer6"] && layer != "languageLayer6") {
      			document.layers['languageLayer6'].visibility="hidden";			
      	}
		if (document.layers[layer]) {
      			document.layers[layer].visibility="show";			
      	}
  		return true;
	} else if (IE4) {
		if(document.all["languageLayer1"] && layer != "languageLayer1"){
				document.all["languageLayer1"].style.visibility="hidden";
		}
		if(document.all["languageLayer2"] && layer != "languageLayer2"){
				document.all["languageLayer2"].style.visibility="hidden";
		}
		if(document.all["languageLayer3"] && layer != "languageLayer3"){
				document.all["languageLayer3"].style.visibility="hidden";
		}
		if(document.all["languageLayer4"] && layer != "languageLayer4"){
				document.all["languageLayer4"].style.visibility="hidden";
		}
		if(document.all["languageLayer5"] && layer != "languageLayer5"){
				document.all["languageLayer5"].style.visibility="hidden";
		}
		if(document.all["languageLayer6"] && layer != "languageLayer6"){
				document.all["languageLayer6"].style.visibility="hidden";
		}
		if(document.all[layer]){
				document.all[layer].style.visibility="visible";	
    	}
  	} else if(NS6) {
	 	if(document.getElementById("languageLayer1") && layer != "languageLayer1"){
				document.getElementById("languageLayer1").style.visibility="hidden";
		}
		if(document.getElementById("languageLayer2") && layer != "languageLayer2"){
				document.getElementById("languageLayer2").style.visibility="hidden";
		}
		if(document.getElementById("languageLayer3") && layer != "languageLayer3"){
				document.getElementById("languageLayer3").style.visibility="hidden";
		}
		if(document.getElementById("languageLayer4") && layer != "languageLayer4"){
				document.getElementById("languageLayer4").style.visibility="hidden";
		}
		if(document.getElementById("languageLayer5") && layer != "languageLayer5"){
				document.getElementById("languageLayer5").style.visibility="hidden";
		}
		if(document.getElementById("languageLayer6") && layer != "languageLayer6"){
				document.getElementById("languageLayer6").style.visibility="hidden";
		}
		if(document.getElementById(layer)){
      			document.getElementById(layer).style.visibility="visible";	
    	}
  	} 
}

function showEditLayer(layer){
	if(NS4 ) 
	{
    	if (document.layers["editLayer1"] && layer != "editLayer1") {
      			document.layers['editLayer1'].visibility="hidden";			
      	}
		if (document.layers["editLayer2"] && layer != "editLayer2") {
      			document.layers['editLayer2'].visibility="hidden";			
      	}
		if (document.layers[layer]) {
      			document.layers[layer].visibility="visible";			
      	}
	} else if (IE4) {
		if(document.all["editLayer1"] && layer != "editLayer1"){
				document.all["editLayer1"].style.visibility="hidden";
		}
		if(document.all["editLayer2"] && layer != "editLayer2"){
				document.all["editLayer2"].style.visibility="hidden";
		}
		if(document.all[layer]){
				document.all[layer].style.visibility="visible";	
    	}
  	} else if(NS6) {
	 	if(document.getElementById["editLayer1"] && layer != "editLayer1"){
				document.getElementById["editLayer1"].style.visibility="hidden";
		}
		if(document.getElementById["editLayer2"] && layer != "editLayer2"){
				document.getElementById["editLayer2"].style.visibility="hidden";
		}
		if(document.getElementById[layer]){
      			document.getElementById[layer].style.visibility="visible";	
    	}
  	} 
}