//Background

back=new Array(3);

back[0]="01.png";
back[1]="02.png";
back[2]="03.png";
back[3]="04.png";
back[4]="05.png";

MyBack=Math.floor(5*Math.random());

document.write ('<style type="text/css"><!--#top_body {background: black url("_img/top_body-back_'+ back[MyBack] +'") no-repeat center;}--></style>');
document.write ('<style type="text/css"><!--#top_menu {background: black url("_img/menu_top-back_'+ back[MyBack] +'") no-repeat center;}--></style>');