today=new Date();
jran=today.getTime();
var anzahl = 5;
var random_number="";
var image="";
ia=9301;
ic=49297;
im=233280;
jran = (jran*ia+ic) % im;

random_number = Math.ceil( (jran/(im*1.0)) * anzahl);

if (random_number==1) {
image="fileadmin/images/headbi01.jpg";
}
if (random_number==2) {
image="fileadmin/images/headbi02.jpg";
}
if (random_number==3) {
image="fileadmin/images/headbi03.jpg";
}
if (random_number==4) {
image="fileadmin/images/headbi04.jpg";
}
if (random_number==5) {
image="fileadmin/images/headbi05.jpg";
}

function zufallsbild() {
document.write("<img class='Extra' src='" + image + "' width='235' height='167' border='0'>")

return
}