$(document).ready(function(){
 	var imgArr = new Array( // relative paths of images
 '/tt/themes/html/TT_Theme/images/ttcustom/jpg/bg-couverture.jpg',
 '/tt/themes/html/TT_Theme/images/ttcustom/jpg/bg-couverture2.jpg',
 '/tt/themes/html/TT_Theme/images/ttcustom/jpg/bg-couverture4.jpg'
 );
 
var preloadArr = new Array();
var i;
 
/* preload images */
for(i=0; i < imgArr.length; i++){
 preloadArr[i] = new Image();
 preloadArr[i].src = imgArr[i];
}
var currImg = 1;
 var intID = setInterval(changeImg, 5000);
 
 /* image rotator */
 function changeImg(){
 $('body').animate({opacity: 1}, 1000, function(){
 $(this).css('background','url(' + preloadArr[currImg++%preloadArr.length].src +') no-repeat fixed center top transparent');
 }).animate({opacity: 1}, 1000);
 }
 });