function getLandingImage() {
	var image = document.getElementById("landing_image");
	image.src = "content/landing/" + randImage();
}

function randImage() {

	// change numberOfImages if you change the number of
	// landing images in the landing folder
	
	var numberOfImages = 10;
	
	var num = Math.floor(Math.random() * numberOfImages) + 1;
	return num + ".jpg";
}