img = new Array();
img[0] = "images/top/01.jpg";
img[1] = "images/top/02.jpg";
img[2] = "images/top/03.jpg";
img[3] = "images/top/04.jpg";
img[4] = "images/top/05.jpg";
img[5] = "images/top/06.jpg";
img[6] = "images/top/07.jpg";
img[7] = "images/top/08.jpg";
img[8] = "images/top/09.jpg";
img[9] = "images/top/10.jpg";
n = Math.floor(Math.random()*img.length);
document.write("<img src='"+img[n]+"' border='0'>");