/* Für das Hauptmenü-Navi, zum ein- und ausklappen. */
function switchlayer(Layer_Name)
{
 var GECKO = document.getElementById? 1:0 ;
 var NS = document.layers? 1:0 ;
 var IE = document.all? 1:0 ;

 if (GECKO)
       {document.getElementById(Layer_Name).style.display=
	   (document.getElementById(Layer_Name).style.display=='block') ? 'none' : 'block';}
 else if (NS)
       {document.layers[Layer_Name].display=(document.layers[Layer_Name].display==
	   'block') ? 'none' : 'block';}
 else if (IE)
       {document.all[Layer_Name].style.display=(document.all[Layer_Name].style.display==
	   'block') ? 'none' : 'block';}
}


/* Uhr */
function init() {
    var ii;
    for(ii=1; ii<10; ii++) {			// Anzahl der Grafiken
	 img=new Image();
	 img.src="dg"+ii+".gif";		// gd = Name der Grafiken
	}
	setTimeout("clock()", "10");
         einklappen();
  }
function clock() {
var ii;
var date=new Date();				// Abfrage am System
var hh=date.getHours();				// Berechnung der Zeit
ii=Math.floor(hh/10);				// Stunden
	document.h1.src="dg"+ii+".gif"
	ii=hh%10;
	document.h2.src="dg"+ii+".gif"
var mm=date.getMinutes();			// Minuten
	ii=Math.floor(mm/10);
	document.m1.src="dg"+ii+".gif"
	ii=mm%10;
	document.m2.src="dg"+ii+".gif"
var ss=date.getSeconds();			// Sekunden
	ii=Math.floor(ss/10);
	document.s1.src="dg"+ii+".gif"
	ii=ss%10;
	document.s2.src="dg"+ii+".gif"
setTimeout("clock()", "1000");
  }