var teller=0;
var itemLayer;

function start_fly(){
 teller = teller + 6;
 if (teller<700) {
  if(document.images){
   itemLayer = document.images["item1"];
   itemLayer.style.left=(teller-600) + 'px';
  }
  if(document.all){
   itemLayer = document.all["item1"];
   itemLayer.style.left=(teller-600) + 'px';
  }
  if(!document.all && document.getElementById){
   itemLayer = document.getElementById("item1");
   itemLayer.style.left=(teller-600) + 'px';
  }
  fly()
 } else {
  teller=0;
  window.clearTimeout(timeoutID);
  weghalen();
 }
}

function fly() {
 timeoutID=window.setTimeout("start_fly()",10);
}

function weghalen() {
 wegID=window.setTimeout("weg()",15000);
}

function weg(){
 itemLayer.style.left=-610 + 'px';
}