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

intPic[0]='http://aquacon.nd.edu/images/management-and-policy/artificial_streams.jpg'
intPic[1]='http://aquacon.nd.edu/images/management-and-policy/barge1.jpg'
intPic[2]='http://aquacon.nd.edu/images/management-and-policy/barge2.jpg'
intPic[3]='http://aquacon.nd.edu/images/management-and-policy/barge_traffic.jpg'
intPic[4]='http://aquacon.nd.edu/images/management-and-policy/brush.jpg'
intPic[5]='http://aquacon.nd.edu/images/management-and-policy/crayfish_art.jpg'
intPic[6]='http://aquacon.nd.edu/images/management-and-policy/exotics_sign.jpg'
intPic[7]='http://aquacon.nd.edu/images/management-and-policy/falls1.jpg'
intPic[8]='http://aquacon.nd.edu/images/management-and-policy/falls2.jpg'
intPic[9]='http://aquacon.nd.edu/images/management-and-policy/falls3.jpg'
intPic[10]='http://aquacon.nd.edu/images/management-and-policy/flower.jpg'
intPic[11]='http://aquacon.nd.edu/images/management-and-policy/flower_water.jpg'
intPic[12]='http://aquacon.nd.edu/images/management-and-policy/joanna_crayfish_traps.jpg'
intPic[13]='http://aquacon.nd.edu/images/management-and-policy/lake_underwater.jpg'
intPic[14]='http://aquacon.nd.edu/images/management-and-policy/plum_creek.jpg'
intPic[15]='http://aquacon.nd.edu/images/management-and-policy/purple_loosestrife1.jpg'
intPic[16]='http://aquacon.nd.edu/images/management-and-policy/tethered_crayfish.jpg'
intPic[17]='http://aquacon.nd.edu/images/management-and-policy/traps_boat.jpg'

intAlt[0]='Several Artificial Streams'
intAlt[1]='The Barge on the River'
intAlt[2]='The Barge on the River'
intAlt[3]='The Barge by the Dock'
intAlt[4]='Brush by the River'
intAlt[5]='Crayfish Art'
intAlt[6]='Exotic Species Advisory Sign'
intAlt[7]='Waterfalls Flowing'
intAlt[8]='Waterfalls Flowing'
intAlt[9]='Waterfalls Flowing'
intAlt[10]='A Flower Opens up with the Sun'
intAlt[11]='Flowers Looking over the Water'
intAlt[12]='Joanna Checking the Crayfish Traps'
intAlt[13]='The Lake as Seen Underwater'
intAlt[14]='Plum Creek'
intAlt[15]='Plants by the Riverside'
intAlt[16]='Crayfish Swimming in Captivity'
intAlt[17]='Crayfish Traps on the Boat'

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