programs = new Array(4);
programs[0] = "<a href = 'http://moodle.scoe.net/' rel='nozoom'><img src='http://www.scoe.net/images/header_01.jpg' alt='Return to main  SCOE Moodle page' width='922' height='135' border='0' /></a>";
programs[1] = "<a href = 'http://moodle.scoe.net/' rel='nozoom'><img src='http://www.scoe.net/images/header_02.jpg' alt='Return to main  SCOE Moodle page' width='922' height='135' border='0' /></a>";
programs[2] = "<a href = 'http://moodle.scoe.net/' rel='nozoom'><img src='http://www.scoe.net/images/header_03.jpg' alt='Return to main  SCOE Moodle page' width='922' height='135' border='0' /></a>";
programs[3] = "<a href = 'http://moodle.scoe.net/' rel='nozoom'><img src='http://www.scoe.net/images/header_04.jpg' alt='Return to main  SCOE Moodle page' width='922' height='135' border='0' /></a>";
index = Math.floor(Math.random() * programs.length);
document.write(programs[index] + "\n");