// Create an array of images
var imgs = new Array(2);
	imgs[0] = "images/header-reservations-2.jpg";
	imgs[1] = "images/header-reservations.gif";

// Preload the images
function preload() {
	var tmp = null;
	for (var j=0; j<imgs.length; j++) {
		tmp = imgs[j];
		imgs[j] = new Image();
		imgs[j].src = tmp;
	}
}
void(preload());

//Swap Images
function imgSwap(img, swap) {
	img.src = imgs[swap].src;
}