jQuery(document).ready(function($){
    $('.nb-progress').each(function(){
        var a = $(this).find('.nb-progress-bar'),
            b = $(a).data('percent');
        waypoint = new Waypoint({
            element: a,
            handler: function() {
                a.css('min-width',b+'%');
            },
            offset: 'bottom-in-view'
        });
    });
} );