#divLoading
{
    display : none;
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 1;
    background-color: #0000007a;
    
}
#divLoading.show
{
    display : block;
    position : fixed;
    z-index: 900;
    tabindex:2;
    background-image : url('/img/loading.gif');
    
    
    background-repeat : no-repeat;
    background-position : center;
    left : 0;
    bottom : 0;
    right : 0;
    top : 0;
}
div.content {
    width : 1000px;
    height : 1000px;
}