function showLayer(id){
 	 a=document.getElementById(id);
 	 a.style.visibility = "visible";
 	 nav=id.replace('sub','');
 	 setNav(nav);
}
function setNav(nav){
	 b=document.getElementById(nav);
 	b.style.color='#333';
	b.style.border='#333 1px solid';
	b.style.borderBottom='#f8f8f8 1px solid';
	b.style.backgroundColor='#f8f8f8';
	b.style.fontWeight='bold'; 
	b.style.letterSpacing='2px';
}
function restoreNav(nav){
	if(aktivnav!=nav){
		b=document.getElementById(nav);
 	 	b.style.backgroundColor='#fff';
		b.style.border='#fff 1px solid';
	  b.style.fontWeight='normal'; 
	 	b.style.letterSpacing='3px';
	}
}
function hideLayerH(id){
 	 a=document.getElementById(id);
 	 a.style.visibility = "hidden";
 	 nav=id.replace('sub','');
 	 restoreNav(nav);
}
function hideAll(){
	hideLayerH('subprodukte');
	hideLayerH('subdesign');
}