#divLoading{display:none;background-size:300px 300px;background-color:#666;opacity:.4;background-repeat:no-repeat;background-position:center;left:0;bottom:0;right:0;top:0}#divLoading.showLoading{display:block;position:fixed;z-index:100}.showLoading{display:block;position:relative;z-index:100;background-color:#f3f3f3;opacity:.5;background-repeat:no-repeat;background-position:center}