var theImages = new Array() 

theImages[0] = 'images/degrees/craterlake.jpg'
theImages[1] = 'images/degrees/fieldnotes.jpg'
theImages[2] = 'images/degrees/girlkids.jpg'
theImages[3] = 'images/degrees/guidewalk.jpg'
theImages[4] = 'images/degrees/litmuskids.jpg'
theImages[5] = 'images/degrees/reflection.jpg'
theImages[6] = 'images/degrees/rivergirls.jpg'
theImages[7] = 'images/degrees/sneak.jpg'
theImages[8] = 'images/degrees/survey.jpg'
theImages[9] = 'images/degrees/timkids.jpg'
theImages[10] = 'images/activities/snowwalk.jpg'
theImages[11] = 'images/prospective/snowball.jpg'


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('<img src="'+theImages[whichImage]+'" alt="New Image">');
}