if(top==self)
  top.location="index.html";

var i=0;
function tausch() {

if(i==16){
i=2;
}

if(i==15){
document.f1.src = "images/sw03.jpg";
document.f2.src = "images/sw02.jpg";
document.f3.src = "images/sw01.jpg";
document.f4.src = "images/sw14.jpg";
i++;
}

if(i==14){
document.f1.src = "images/sw02.jpg";
document.f2.src = "images/sw01.jpg";
document.f3.src = "images/sw14.jpg";
document.f4.src = "images/sw13.jpg";
i++;
}

if(i==13){
document.f1.src = "images/sw01.jpg";
document.f2.src = "images/sw14.jpg";
document.f3.src = "images/sw13.jpg";
document.f4.src = "images/sw12.jpg";
i++;
}

if(i==12){
document.f1.src = "images/sw14.jpg";
document.f2.src = "images/sw13.jpg";
document.f3.src = "images/sw12.jpg";
document.f4.src = "images/sw11.jpg";
i++;
}

if(i==11){
document.f1.src = "images/sw13.jpg";
document.f2.src = "images/sw12.jpg";
document.f3.src = "images/sw11.jpg";
document.f4.src = "images/sw10.jpg";
i++;
}

if(i==10){
document.f1.src = "images/sw12.jpg";
document.f2.src = "images/sw11.jpg";
document.f3.src = "images/sw10.jpg";
document.f4.src = "images/sw09.jpg";
i++;
}

if(i == 9)
{
document.f1.src = "images/sw11.jpg";
document.f2.src = "images/sw10.jpg";
document.f3.src = "images/sw09.jpg";
document.f4.src = "images/sw08.jpg";
i++;
}

if(i == 8)
{
document.f1.src = "images/sw10.jpg";
document.f2.src = "images/sw09.jpg";
document.f3.src = "images/sw08.jpg";
document.f4.src = "images/sw07.jpg";
i++;
}

if(i == 7)
{
document.f1.src = "images/sw09.jpg";
document.f2.src = "images/sw08.jpg";
document.f3.src = "images/sw07.jpg";
document.f4.src = "images/sw06.jpg";
i++;
}

if(i == 6)
{
document.f1.src = "images/sw08.jpg";
document.f2.src = "images/sw07.jpg";
document.f3.src = "images/sw06.jpg";
document.f4.src = "images/sw05.jpg";
i++;
}

if(i == 5)
{
document.f1.src = "images/sw07.jpg";
document.f2.src = "images/sw06.jpg";
document.f3.src = "images/sw05.jpg";
document.f4.src = "images/sw04.jpg";
i++;
}

if(i == 4)
{
document.f1.src = "images/sw06.jpg";
document.f2.src = "images/sw05.jpg";
document.f3.src = "images/sw04.jpg";
document.f4.src = "images/sw03.jpg";
i++;
}

if(i == 3)
{
document.f1.src = "images/sw05.jpg";
document.f2.src = "images/sw04.jpg";
document.f3.src = "images/sw03.jpg";
document.f4.src = "images/sw02.jpg";
i++;
}

if(i == 2)
{
document.f1.src = "images/sw04.jpg";
document.f2.src = "images/sw03.jpg";
document.f3.src = "images/sw02.jpg";
document.f4.src = "images/sw01.jpg";
i++;
}

if(i == 1)
{
document.f1.src = "images/sw03.jpg";
document.f2.src = "images/sw02.jpg";
document.f3.src = "images/sw01.jpg";
i++;
}

if(i < 1)
{
document.f1.src = "images/sw02.jpg";
document.f2.src = "images/sw01.jpg";
i++;
}
}