/* Start by setting display:none to make this hidden.
   Then we position it in relation to the viewport window
   with position:fixed. Width, height, top and left speak
   speak for themselves. Background we set to 80% white with
   our animation centered, and no-repeating */
#remoteapi-loading-mask {
    display:    none;
    position:   fixed;
    z-index:    1000;
    top:        0;
    left:       0;
    height:     100%;
    width:      100%;
    background: #000
                url('/Embedded/icons/loading-bar.gif')
                50% 50% 
                no-repeat;
    opacity:    0.75;
}