if (document.images) {
  var img_on  = new Image();
  img_on.src = 'bilder/navigation/marker_a.gif';
  var img_off = new Image();
  img_off.src = 'bilder/navigation/marker.gif';
}

function off(pic) { 
  document.images[pic].src = img_off.src;
}

function on(pic) { 
  document.images[pic].src = img_on.src;
}





function imgSet(imgName) {
	if (document.images) {
		ActiveLink = imgName;
		switch(imgName)
                {
                 case "marker0":
                 document["marker1"].src = img_off.src;
                 document["marker2"].src = img_off.src;
                 document["marker3"].src = img_off.src;
                 document["marker4"].src = img_off.src;
                 document["marker5"].src = img_off.src;
                 document["marker6"].src = img_off.src;
                 document["marker7"].src = img_off.src;
                 document["marker99"].src = img_off.src;
                 document["marker98"].src = img_off.src;
                 document["marker97"].src = img_off.src;
                 break;
                 
                 case "marker1":
                 document["marker0"].src = img_off.src;
                 document["marker2"].src = img_off.src;
                 document["marker3"].src = img_off.src;
                 document["marker4"].src = img_off.src;
                 document["marker5"].src = img_off.src;
                 document["marker6"].src = img_off.src;
                 document["marker7"].src = img_off.src;
                 document["marker99"].src = img_off.src;
                 document["marker98"].src = img_off.src;
                 document["marker97"].src = img_off.src;
                 break;
                 
                 case "marker2":
                 document["marker1"].src = img_off.src;
                 document["marker0"].src = img_off.src;
                 document["marker3"].src = img_off.src;
                 document["marker4"].src = img_off.src;
                 document["marker5"].src = img_off.src;
                 document["marker6"].src = img_off.src;
                 document["marker7"].src = img_off.src;
                 document["marker99"].src = img_off.src;
                 document["marker98"].src = img_off.src;
                 document["marker97"].src = img_off.src;
                 break;
                 
                 case "marker3":
                 document["marker1"].src = img_off.src;
                 document["marker2"].src = img_off.src;
                 document["marker0"].src = img_off.src;
                 document["marker4"].src = img_off.src;
                 document["marker5"].src = img_off.src;
                 document["marker6"].src = img_off.src;
                 document["marker7"].src = img_off.src;
                 document["marker99"].src = img_off.src;
                 document["marker98"].src = img_off.src;
                 document["marker97"].src = img_off.src;
                 break;
                 
                 case "marker4":
                 document["marker1"].src = img_off.src;
                 document["marker2"].src = img_off.src;
                 document["marker3"].src = img_off.src;
                 document["marker0"].src = img_off.src;
                 document["marker5"].src = img_off.src;
                 document["marker6"].src = img_off.src;
                 document["marker7"].src = img_off.src;
                 document["marker99"].src = img_off.src;
                 document["marker98"].src = img_off.src;
                 document["marker97"].src = img_off.src;
                 break;
                 
                 case "marker5":
                 document["marker1"].src = img_off.src;
                 document["marker2"].src = img_off.src;
                 document["marker3"].src = img_off.src;
                 document["marker4"].src = img_off.src;
                 document["marker0"].src = img_off.src;
                 document["marker6"].src = img_off.src;
                 document["marker7"].src = img_off.src;
                 document["marker99"].src = img_off.src;
                 document["marker98"].src = img_off.src;
                 document["marker97"].src = img_off.src;
                 break;
                 
                 case "marker6":
                 document["marker1"].src = img_off.src;
                 document["marker2"].src = img_off.src;
                 document["marker3"].src = img_off.src;
                 document["marker4"].src = img_off.src;
                 document["marker5"].src = img_off.src;
                 document["marker0"].src = img_off.src;
                 document["marker7"].src = img_off.src;
                 document["marker99"].src = img_off.src;
                 document["marker98"].src = img_off.src;
                 document["marker97"].src = img_off.src;
                 break;
                 
                 case "marker7":
                 document["marker1"].src = img_off.src;
                 document["marker2"].src = img_off.src;
                 document["marker3"].src = img_off.src;
                 document["marker4"].src = img_off.src;
                 document["marker5"].src = img_off.src;
                 document["marker6"].src = img_off.src;
                 document["marker0"].src = img_off.src;
                 document["marker99"].src = img_off.src;
                 document["marker98"].src = img_off.src;
                 document["marker97"].src = img_off.src;
                 break;
                 
                 case "marker99":
                 document["marker1"].src = img_off.src;
                 document["marker2"].src = img_off.src;
                 document["marker3"].src = img_off.src;
                 document["marker4"].src = img_off.src;
                 document["marker5"].src = img_off.src;
                 document["marker6"].src = img_off.src;
                 document["marker7"].src = img_off.src;
                 document["marker0"].src = img_off.src;
                 document["marker98"].src = img_off.src;
                 document["marker97"].src = img_off.src;
                 break;
                 
                 case "marker98":
                 document["marker1"].src = img_off.src;
                 document["marker2"].src = img_off.src;
                 document["marker3"].src = img_off.src;
                 document["marker4"].src = img_off.src;
                 document["marker5"].src = img_off.src;
                 document["marker6"].src = img_off.src;
                 document["marker7"].src = img_off.src;
                 document["marker99"].src = img_off.src;
                 document["marker0"].src = img_off.src;
                 document["marker97"].src = img_off.src;
                 break;
                 
                 case "marker97":
                 document["marker1"].src = img_off.src;
                 document["marker2"].src = img_off.src;
                 document["marker3"].src = img_off.src;
                 document["marker4"].src = img_off.src;
                 document["marker5"].src = img_off.src;
                 document["marker6"].src = img_off.src;
                 document["marker7"].src = img_off.src;
                 document["marker99"].src = img_off.src;
                 document["marker98"].src = img_off.src;
                 document["marker0"].src = img_off.src;
                 break;
                 
                 default:
                 
                 break;
                } 
		
	}
}