random_number= Math.floor(Math.random()* 5+1 );

if (random_number==1) {
image="images/andreakempter2012-1.jpg";
}
if (random_number==2) {
image="images/andreakempter2012-2.jpg";
}
if (random_number==3) {
image="images/andreakempter2012-3.jpg";
}
if (random_number==4) {
image="images/andreakempter2012-4.jpg";
}
if (random_number==5) {
image="images/andreakempter2012-6.jpg";
}