while(true){
aleatorio = Math.random();
numero = Math.round(aleatorio * 5);

if (numero == 0){
imagen = "http://i444.photobucket.com/albums/qq170/ShinwaKyoto/Banner/Aisuna.jpg";
break;}

if (numero == 1){
imagen = "http://i444.photobucket.com/albums/qq170/ShinwaKyoto/Banner/Bra.jpg";
break;}

if (numero == 2){
imagen = "http://i444.photobucket.com/albums/qq170/ShinwaKyoto/Banner/KyotoHisuya2.jpg";
break;}

if (numero == 3){
imagen = "http://i444.photobucket.com/albums/qq170/ShinwaKyoto/Banner/Mishou.jpg";
break;}

if (numero == 4){
imagen = "http://i444.photobucket.com/albums/qq170/ShinwaKyoto/Banner/Tasuke.jpg";
break;}

if (numero == 5){
imagen = "http://i444.photobucket.com/albums/qq170/ShinwaKyoto/Banner/bulle.jpg";
break;}

}
document.write('<a href="http://kyoto.forumieren.de/forum.htm" target="_self" ><img src="' + imagen + '" border=0 style="width: 850px; height: 400px"></a>');