// randomImage( )
	// Pre: The images are in the folder with the prefix "header" and suffix ".jpg" with the image number between  the two
	// Return: The local url to a random image with the prefix "header" and suffix ".jpg" with the image number between the two
	function randomImage( ) {
		numberOfImagesToRotate = 5; // Change this for more or less images
		firstPart = '<img src="images/header';
		var imageNumber = Math.ceil(Math.random() * numberOfImagesToRotate);
		lastPart = '.jpg" alt="St. Lawrence University Department of Religious Studies" height="200" width="700" />';
		document.write(firstPart + imageNumber + lastPart);
	}