var iSerieCount = 0
		function hideLayer(){
			var neuLay; 			
			for(i=1; i<=iSerieCount;i++){
				neuLay = "descLay_" + i.toString();				
				//document.all[neuLay].style.display = "none";
				foGetElement(neuLay).style.display = "none";
			}
		}		
		function dispLayer(viZahl){
			hideLayer();					
			var neuLay = "descLay_" + viZahl.toString();									
			foGetElement(neuLay).style.display = "inline";						
		}