var intPic = new Array();
var intAlt = new Array();

intPic[0]='http://aquacon.nd.edu/images/research/3_flowers.jpg'
intPic[1]='http://aquacon.nd.edu/images/research/damselfly_close.jpg'
intPic[2]='http://aquacon.nd.edu/images/research/damselfly_plant.jpg'
intPic[3]='http://aquacon.nd.edu/images/research/flower_lily_pads.jpg'
intPic[4]='http://aquacon.nd.edu/images/research/frog1.jpg'
intPic[5]='http://aquacon.nd.edu/images/research/frog2.jpg'
intPic[6]='http://aquacon.nd.edu/images/research/loon.jpg'
intPic[7]='http://aquacon.nd.edu/images/research/plum_creek_outflow.jpg'
intPic[8]='http://aquacon.nd.edu/images/research/snail.jpg'
intPic[9]='http://aquacon.nd.edu/images/research/tadpole_hand.jpg'
intPic[10]='http://aquacon.nd.edu/images/research/tim_collecting.jpg'

intAlt[0]='Three Flowers on the Tops of Lily Pads'
intAlt[1]='A Damselfly Rests on a Plant'
intAlt[2]='A Damselfly Rests on a Plant'
intAlt[3]='Closeup of Flowers on a Lily Pad'
intAlt[4]='A Frog Coming out of the Water'
intAlt[5]='An African Frong Coming out of the Water'
intAlt[6]='A Loon Swimming in the River'
intAlt[7]='Plum Creek Outflow'
intAlt[8]='Snails on the Bed of the River'
intAlt[9]='A Snail on a Students Hand'
intAlt[10]='Collecting Samples in Scuba Gear'

var j = intPic.length;
var myPic = Math.round(Math.random()*(j-1));
function showPic(){
	document.write('<img src="'+intPic[myPic]+'" alt="'+intAlt[myPic]+'">');
}