var randomPic = new Array();
		randomPic[0] = "images/english.jpg";
		randomPic[1] = "images/welsh.jpg";
		randomPic[2] = "images/scottish.jpg";
		randomPic[3] = "images/ireland.jpg";
		randomPic[4] = "images/unionJack.jpg";
		
function randomFlag() {
  var randomNumber = Math.floor(Math.random()*5);
	document.flag.src = randomPic[randomNumber];
  setTimeout("randomFlag()",3000);
}