// JavaScript Document

function startImageRoll(objId) {
	var interval = 2500
	for( var i=0; i<frontImg.length; i++ ) {
		preLoadImg[preLoadImg.length] = new Image();
		preLoadImg[preLoadImg.length-1].src = frontImg[i];
	}
	setTimeout("nextImage('"+objId+"',1)", interval);
};

function nextImage(objId,i) {
	var interval = 2500;
	document.getElementById(objId).src = frontImg[i];
	i = (i+1) % frontImg.length;
	setTimeout("nextImage('"+objId+"',"+i+")", interval);
}
var preLoadImg = new Array();
var frontImg = [
		"images/front_01.jpg",
		"images/front_02.jpg",
		"images/front_03.jpg",
		"images/front_04.jpg"
		];