var preloadNextImage, preloadPrevImage;
if (this.imageArray.length > this.activeImage + 1){
preloadNextImage = Roo.DomHelper.append(document.body, { tag: 'img' } , true);
var preloadNextImage, preloadPrevImage;
if (this.imageArray.length > this.activeImage + 1){
preloadNextImage = Roo.DomHelper.append(document.body, { tag: 'img' } , true);