var ie,ns,stylesw,ObjUeb,ObjTier

function Init(){
  ie = document.all ? true : false;
  ns = document.layers ? true : false;
  if (ie)  stylesw='.style'; else if (ns) stylesw='';
}

function NeuerLayer(){
  Init();
  if (ie){
    document.write('<div id="LayUeb" style="position:absolute; left:-200px; top:0px; z-index:1"><img src="menue/But-Herzlich-Willkommen.gif" name="BildUeb"></div>');  
	document.write('<div id="LayTier" style="position:absolute; left:-200px; top:0px; z-index:1"><img src="bilder/katze1.gif" name="BildTier"></div>');  
  }else if (ns){
    document.write('<layer name="LayUeb" left="5" top="0" width="150" height="115" visibility="hide"><img src="menue/But-Herzlich-Willkommen.gif" name="BildUeb"></layer>');  
    document.write('<layer name="LayTier" left="5" top="0" width="150" height="115" visibility="hide"><img src="bilder/katze1.gif" name="BildTier"></layer>');  	
  }	
}

function BewegeLayer(ObjLay,x,y){
  eval('ObjLay'+stylesw+'.left='+x);
  eval('ObjLay'+stylesw+'.top='+y);
}

function Animation1(x,y,dx,zx,dt){
  BewegeLayer(ObjUeb,x,y);
  BewegeLayer(ObjTier,x-30,y);
  x=x+dx;
  if (x<zx){
    setTimeout("Animation1("+x+","+y+","+dx+","+zx+","+dt+")",dt);
  }else{
    BewegeLayer(ObjTier,x-30,y);
    document.BildTier.src="bilder/katze2.gif";
  }	
}

function Ueberschrift(bildurl){
  if (ie){
    ObjUeb=document.all.LayUeb;
	ObjTier=document.all.LayTier;
	
  } else if(ns){
    ObjUeb=document.LayUeb;
	ObjTier=document.LayTier;
	BewegeLayer(ObjUeb,-200,10);
	BewegeLayer(ObjTier,-220,10);
	ObjUeb.visibility="show";
	ObjTier.visibility="show";
  }
  document.BildUeb.src=bildurl 	
  Animation1(-200,10,10,screen.width-285,10);
}