.loadingPanel
{
    position: fixed;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    z-index: 100005;
    filter: alpha(opacity=70);
    opacity: 0.7;
    /*background: Gray url('<%=WebResource("ASDSoft.ESF2014.Web.Resources.LoadingPanel.gif") %>') no-repeat center center;*/
    /*background: Gray url('Images/LoadingPanel.gif') no-repeat center center;*/
    background-color: Gray;
}

    .loadingPanel.invisible
    {
        display: none;
    }

    .loadingPanel > img
    {
        position: absolute;
        top: 50%;
        left: 50%;
        /*width: 120px;
        height: 120px;*/
        margin-left: -60px;
        margin-top: -60px;
    }