while(true){
aleatorio = Math.random();
numero = Math.round(aleatorio * 3);

if (numero == 0){
imagen = "https://i.servimg.com/u/f43/15/83/85/50/ecolle10.jpg";
break;}

if (numero == 1){
imagen = "https://i.servimg.com/u/f43/15/83/85/50/fcolle10.jpg";
break;}

if (numero == 2){
imagen = "https://i.servimg.com/u/f43/15/83/85/50/wcolle10.jpg";
break;}

if (numero == 3){
imagen = "https://i.servimg.com/u/f43/15/83/85/50/qcolle10.jpg";
break;}


}
document.write('<a href="https://miami-college.forumieren.com/" target="_self" ><img src="' + imagen + '" border=2 style="width: 934px; height: 453px"></a>');