function InitLayers(){
	for (var i = 1; i<5; i++){
		LName = 'submenu' + i;
		if(DOM || MS)
		{
			getElem("id",LName,null).style.visibility="hidden";
			getElem("id",LName,null).innerHTML=content[i];
		}
		if(NS)
		{ 
			getElem("id",LName,null).visibility="hide";
			var layerdoc = getElem("id",LName,null).document;
			layerdoc.write(content[i]);
			layerdoc.close();
		 }
	}
}			

function DoNavi(ImgRef, MenuNo, ShowMode){
	SetImage(Bilder[ImgRef][ShowMode].src, ImgRef);
	HideLayers();
	ShowLayer('submenu' + MenuNo);
}

function HideLayers(){
	for (var i = 1; i<5; i++)
	{
		LName = 'submenu' + i;
		HideLayer(LName);
	}
}

function HideLayer(LName){
	if(DOM || MS)
  	{
		getElem("id",LName,null).style.visibility = "hidden";
	}
 	if(NS)
	{
  		getElem("id",LName,null).visibility = "hide";
	}
}

function ShowLayer(LName){
 if(DOM || MS)
  getElem("id",LName,null).style.visibility = "visible";
 if(NS)
  getElem("id",LName,null).visibility = "show";
}

function SetLayer(LName, LValue, LayerNo){
	if(DOM || MS)
  	{
  		getElem("id",LName,null).innerHTML=LValue;
	}
	if(NS)
	 {
  		getElem("id",LName,null).document.write=LValue;
  		getElem("id",LName,null).document.close();
	 }
}