sticky highlight nav bar

sticky_fixie

propublica.views.getStuck = propublica.View.extend({
  tag : "li",
  cssClass : "congressperson_box",

  render : function() {
    _.bindAll(this, "imStuck");
    this.jWindow = $(window);
    this.jWindow.scroll(this.imStuck);
  },

  imStuck : function() {
    if ($(window).width() < 480) return
    var windowTop = this.jWindow.scrollTop();
    var sticky = function(index) {
        $('#sidebar li').removeClass('active'), $('.' + index + '-bar').addClass('active');
      };

    this.el.each(function() { 
      var cur = $(this); 
      var curTop = cur.offset().top;
      var curInx = cur.attr("data-state");
      var sidebarTop = $('.'+curInx+'-bar').offset().top;
      if (sidebarTop > curTop) {
        sticky(curInx);
      } else {
      }
    });

  }

});