#preview { position: absolute; left: 0px; top: 0px; width: 100%; height: 100%; display: none; z-index: 5; }
#previewBackground { position: absolute; left: 0px; top: 0px; width: 100%; height: 100%; background: #222; }
#previewImg {  position: absolute; left: 0px; top: 0px; display: none; }
#previewLoading {  position: absolute; left: 0px; top: 0px; background: #fff; width: 50px; height: 50px; display: none; border: 1px solid #777; }
#previewLoading.loading { background: url(../img/loading.gif) center center no-repeat #fff; }