var b1dis = "<a href=\"";
var bdis = " <img src=\"";
var edis = " width=\"760\" height=\"200\" alt=\"image\" border=\"0\"><\/a>";
var rnumb = "";
var img = "";

rnumb += Math.floor(Math.random()*5);
img = rnumb;

if (img == "0") {
document.write(bdis+ "http://music.asu.edu/photos/handdrumming.jpg\"" +edis);
}

if (img == "1") {
document.write(bdis+ "http://music.asu.edu/photos/hcal-violins.jpg\"" +edis);
}

if (img == "2") {
document.write(bdis+ "http://music.asu.edu/photos/hcfk-guitar.jpg\"" +edis);
}

if (img == "3") {
document.write(bdis+ "http://music.asu.edu/photos/HCFK-music.jpg\"" +edis);
}

if (img == "4") {
document.write(bdis+ "http://music.asu.edu/photos/tuba1.jpg\"" +edis);
}