Gallery Modal JS

function apppCustomModal(event) {
    
    $ = jQuery;
    
    event.preventDefault();
    
    $('.gallery-modal-image').attr( 'src',  '' );
 
    var UpClasses   = 'slide-in-up-add ng-animate slide-in-up slide-in-up-add-active';
    var downClasses = 'slide-in-up-remove slide-in-up-remove-active';
 
    //get href of button that matches id of modal div
    var ImageURL = $(this).attr('href');
 
    // need to move .css to css file
    $('#gallery-modal').css('display', 'block').removeClass(downClasses).addClass(UpClasses);
    
    setTimeout(function() { 
        $('.gallery-modal-image').attr( 'src',  ImageURL );
    }, 300 );
 
}
 
jQuery(document).on('ready load_ajax_content_done', function($) {
    jQuery('.gallery-icon a').on( 'click', apppCustomModal );
});