Link0 = new Image();
Link0.src = "../../images/back.gif";
Link1 = new Image();
Link1.src = "../../images/back_h.gif";
Link2 = new Image();
Link2.src = "../../images/forward.gif";
Link3 = new Image();
Link3.src = "../../images/forward_h.gif";
Link4 = new Image();
Link4.src = "../../images/start.gif";
Link5 = new Image();
Link5.src = "../../images/start_h.gif";
Link6 = new Image();
Link6.src = "../../images/stop.gif";
Link7 = new Image();
Link7.src = "../../images/stop_h.gif";


var max_nr;
var delay=2200;
var nr=1;

function chkload(nr)
{
  max_nr = nr;
  document.getElementById('load').style.visibility ="hidden";
  document.getElementById('show1').style.visibility ="visible";
  document.getElementById('stop').style.visibility ="visible";
  aktiv = setTimeout('move()',delay);
}


function move()
{
  if(nr < max_nr)
  {
	document.getElementById('show'+nr).style.visibility="hidden";
	document.getElementById('show'+(nr+1)).style.visibility="visible";
	nr = nr+1;
	aktiv = setTimeout('move()',delay);
  }
  else
  {
    document.getElementById('show'+max_nr).style.visibility="hidden";
	document.getElementById('show1').style.visibility="visible";
	nr = 1;
	aktiv = setTimeout('move()',delay);
   }
 }


 function stop_dia()
 {
   clearTimeout(aktiv);
   document.getElementById('stop').style.visibility ="hidden";
   document.getElementById('start').style.visibility ="visible";
   document.getElementById('vor').style.visibility ="visible";
   document.getElementById('zurueck').style.visibility ="visible";
 }

function go_dia()
{
   document.getElementById('start').style.visibility="hidden";
   document.getElementById('vor').style.visibility ="hidden";
   document.getElementById('zurueck').style.visibility ="hidden";
   document.getElementById('stop').style.visibility="visible";
   move();
}


function zurueck_dia()
{
 if(nr == 1)
 {
   document.getElementById('show1').style.visibility="hidden";
   document.getElementById('show'+max_nr).style.visibility="visible";
   nr = max_nr;
 }
 else
 {
   document.getElementById('show'+nr).style.visibility="hidden";
   document.getElementById('show'+(nr-1)).style.visibility="visible";
   nr = nr -1;
 }
}

function vor_dia()
{
 if(nr == max_nr)
 {
   document.getElementById('show'+nr).style.visibility="hidden";
   document.getElementById('show1').style.visibility="visible";
   nr = 1;
 }
 else
 {
   document.getElementById('show'+nr).style.visibility="hidden";
   document.getElementById('show'+(nr+1)).style.visibility="visible";
   nr = nr +1;
 }
}