var NUM_IMAGES = 5;

function rotate() {
	var i = Math.floor ( Math.random ( ) * NUM_IMAGES + 1 )
	var prefix ="";
	if (i < 10) {
		prefix="0"
	}
	document.getElementById("random-image").src = "images/home_" + prefix + i + ".jpg"
}

function init () {
	rotate();
}
window.onload= init;