var imglist = new Array(	
	"http://tu-144.engin.umich.edu/web/images/facilities/wave_field.jpg",
	"http://tu-144.engin.umich.edu/web/images/history/mcdivitt.jpg",
	"http://tu-144.engin.umich.edu/web/images/history/teal2.jpg",
	"http://tu-144.engin.umich.edu/web/images/people/aero_staff.jpg",
	"http://tu-144.engin.umich.edu/web/images/people/mcdivitt_students.jpg"
);

var selectnum = Math.floor((Math.random() * 100)) % imglist.length;

var output =  "<img src=" + imglist[selectnum] + " alt = " + " " + " >";
			   
document.write(output);