.mask{position: absolute;top: 0;left: 0;z-index: 98;width: 100%;height: 775px;opacity: 0.5;filter:alpha(opacity=50);background: #000;display: none;}
.pop_login{width: 840px;height: 498px;position: absolute;top: 50%;left: 50%;margin: -249px 0 0 -420px;display: none;z-index: 99;}
.pop_login_ck{width: 840px;height: 498px;	display: inline-block;}
.pop_loading{position: absolute;top: 126px;left: 0px;width: 310px;height: 311px;background: url(/app_images/one/V30/core/login/pop/loading.gif) no-repeat;}