subPics = new Array ("http://www.jmu.edu/music/images/sub-hdr1.jpg","http://www.jmu.edu/music/images/sub-hdr2.jpg","http://www.jmu.edu/music/images/sub-hdr3.jpg","http://www.jmu.edu/music/images/sub-hdr4.jpg","http://www.jmu.edu/music/images/sub-hdr5.jpg","http://www.jmu.edu/music/images/sub-hdr6.jpg")
		subImgCt = subPics.length
		
		function chooseSubPic(){
			if (document.images) {
			randomNum = Math.floor ((Math.random() * subImgCt))
			document.subPic.src = subPics[randomNum]
			}
		}