function doRandomImages() {
	
	var headerImagesPath = '../images/wrpr/';
	var headerImages = new Array('masthead09_graphic1.jpg', 'masthead09_graphic2.jpg', 'masthead09_graphic3.jpg', 'masthead09_graphic4.jpg');
	var randomNumber = Math.round(Math.random() * headerImages.length);
	var getThisManyImages = 1;
	var imageString = '';
	
	for(i = 0; i < getThisManyImages; i++) {
		
		if(randomNumber > headerImages.length - 1) {
			randomNumber = 0;
		}
		
		imageString += "<img src=" + headerImagesPath + headerImages[randomNumber] + " alt=\"\">";
		randomNumber++;
		
	}
	
	document.getElementById('random-header-images').innerHTML = imageString;
	
}