var images = 
"pic1.jpg,pic2.jpg,pic3.jpg,pic6.jpg,pic13.jpg,pic14.jpg,pic15.jpg,pic24.jpg,pic26.jpg,pic30.jpg,pic35.jpg,pic44.jpg,pic45.jpg,pic47a.jpg,pic48.jpg,pic49.jpg,pic50a.jpg,pic52a.jpg,pic53a.jpg,pic54.jpg,pic55.jpg".split(",");
var num = Math.round(Math.random() * (images.length-1));
var img = images[num];
if(img) document.images['leftpicimg'].src = 
"http://www.openband.net/images/pics/" + img;