show loader before the modal opens code example

Example: add loader inside the modal

############### CSS ##################

#loading {
    position: fixed;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    background: url(img/preloader.gif) center no-repeat #fff;
}

############### HTML ###################

<div id="loading"></div>

<div class="modal fade" id="myModal" tabindex="-1" role="dialog" 
aria-labelledby="myModalLabel"></div>