var pics = new Array();
pics[0] = 'pic_runner.jpg'
pics[1] = 'pic_cycling.jpg'
pics[2] = 'pic_climber.jpg'
pics[3] = 'pic_skier.jpg'
pics[4] = 'pic_snowboarder.jpg'
pics[5] = 'pic_trailRun.jpg'
var p = pics.length;
var ranPic = Math.round(Math.random()*(p-1));