.modal_load {
    display:    none;
    position:   fixed;
    z-index:    1000;
    top:        0;
    left:       0;
    height:     100%;
    width:      100%;
    background: rgba( 255, 255, 255, .8 )
    url('../img/plugins/modal-load_img.gif')
    50% 50%
    no-repeat;
}

    /* When the body has the loading class, we turn the scrollbar off with overflow:hidden */
body.loading {
    overflow: hidden;
}

    /* Anytime the body has the loading class, our loaing_modal element will be visible */
body.loading .modal_load {
    display: block;
}