var img = new Array(); 
var start = null;      
var counter = 1;       
var anzahl_bilder;     
var dateiendung;        
var datenquelle;        
anzahl_bilder = 5;       
datenquelle = "images/sl"
dateiendung = ".gif" 
var delayTime = 3000;
if(document.images)
{
   for(i = 1; i <= anzahl_bilder; i++)
   {
     img[i] = new Image();
     img[i].src = datenquelle + i + dateiendung;
   }
}
function anim()
{
   counter++;
   document.getElementById("Bild01").src = img[counter].src;
   if(counter == anzahl_bilder)
    counter = 0;
}
function slide()
{
   with(document.slogan)
   {
   start = setInterval("anim()", delayTime);
   }
}
function stopSlide()
{
   clearInterval(start);
   document.form1.stShow.disabled = false;
   document.form1.spShow.disabled = true;
}