// Set up the image files to be used.
var theImages = new Array() // do not change this
// To add more image files, continue with the
// pattern below, adding to the array. Rememeber
// to increment the theImages[x] index!

theImages[0] = 'http://www.med.umich.edu/medschool/images/home/dose/frederick2.jpg'
theImages[1] = 'http://www.med.umich.edu/medschool/images/home/dose/ehrlichman2.jpg'
theImages[2] = 'http://www.med.umich.edu/medschool/images/home/dose/lo2.jpg'
theImages[3] = 'http://www.med.umich.edu/medschool/images/home/dose/lohitsa2.jpg'
theImages[4] = 'http://www.med.umich.edu/medschool/images/home/dose/wixson2.jpg'

// ======================================
// do not change anything below this line
// ======================================

var j = 0
var p = theImages.length;

var preBuffer = new Array()
for (i = 0; i < p; i++){
   preBuffer[i] = new Image()
   preBuffer[i].src = theImages[i]
}

var whichImage = Math.round(Math.random()*(p-1));
function showImage(){
document.write('<a href="http://www2.med.umich.edu/medschool/reality/"><img src="'+theImages[whichImage]+'"></a>');
}