//----------------------------
// Layersniffer
//----------------------------

if (navigator.appName == "Netscape") {
		layerRef="document.layers";
		styleSwitch="";
		layerPosX=".left";
		layerPosY=".top";
}else{
		layerRef="document.all";
		styleSwitch=".style";
		layerPosX=".posLeft";
		layerPosY=".posTop";
}

bVers = "noLayer";
if (document.getElementById) 	bVers = "ns6";
if (document.all) 				bVers = "ie4";
if (document.layers) 			bVers = "ns4";


//----------------------------------
// Img-Swap innerhalb Layern
//----------------------------------
function imgSwapLayer(layer, name, imgsrc) {
	
	if (document.images) {
		if ( document.getElementById ){						
			eval('document.getElementById("'+name+'").src="'+imgsrc+'"');			
		} else {	//nur nn4	
			eval(layerRef+'["'+layer+'"].document.'+name+'.src="'+imgsrc+'"');
		}
	}	
}

//----------------------------------
// Layer ein-/ausschalten
//----------------------------------
function showLayer(layername){	
	if (bVers == "ns6"){
		eval('document.getElementById("'+layername+'").style.visibility="visible"');
	} else if (bVers != "noLayer") {		
		eval(layerRef+'["'+layername+'"]'+styleSwitch+'.visibility="visible"');		
	}
}
function hideLayer(layername){	
	if (bVers == "ns6"){
		eval('document.getElementById("'+layername+'").style.visibility="hidden"');
	} else if (bVers!= "noLayer") {
		eval(layerRef+'["'+layername+'"]'+styleSwitch+'.visibility="hidden"');
	}
}
function moveLayerTop(layername, top){
	// notbremse, falls der abstand nicht ermittelt werden konnte (alte opera)
	if (isNaN(top)) return;
	if (bVers == "ns6"){		
		eval('document.getElementById("'+layername+'").style.top='+(top-2));
	} else if (bVers!= "noLayer") {		
		if (eval(layerRef+'["'+layername+'"]'+styleSwitch+'.style')){			
			eval(layerRef+'["'+layername+'"]'+styleSwitch+'.style.top='+(top-2));
		} else {			
			eval(layerRef+'["'+layername+'"]'+styleSwitch+'.top='+(top-2));			
		}
	}
}
function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document;
  if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; 
    n=n.substring(0,p);
  }
  if(!(x=d[n])&&d.all) x=d.all[n]; 
  for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); 
  return x;
}

function showContLayers() { //v6.0
  var i,p,v,obj,args=showContLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) 
  if ((obj=MM_findObj(args[i]))!=null) { 
  		v=args[i+2];
    if (obj.style) { 
    	obj=obj.style; v=(v=='show')?'visible':(v=='hide')?'hidden':v; 
    }
    	obj.visibility=v; 
   }
}