function randomPicture() {
	var thePicture = new Array("/media/hydrosol-1-home-illu.jpg","/media/hydrosol-2-home-illu.jpg","/media/hydrosol-3-home-illu.jpg");
	randomNum = Math.floor((Math.random() * thePicture.length));
	document.getElementById("intropict").src = thePicture[randomNum];
}