var cssurl= new Array();
cssurl[0]="css/rd-amimami.css";
cssurl[1]="css/rd-azusa.css";
cssurl[2]="css/rd-chihaya.css";
cssurl[3]="css/rd-haruka.css";
cssurl[4]="css/rd-hibiki.css";
cssurl[5]="css/rd-iori.css";
cssurl[6]="css/rd-makoto.css";
cssurl[7]="css/rd-miki.css";
cssurl[8]="css/rd-ritsuko.css";
cssurl[9]="css/rd-takane.css";
cssurl[10]="css/rd-yayoi.css";
cssurl[11]="css/rd-yukiho.css";

n= Math.floor(Math.random()*cssurl.length);
document.write("<link rel='stylesheet' type='text/css' href='"+cssurl[n]+"'>");