text: $(function() {
  
      $(".nav a").on("click", function(){
         $(".nav").find(".active").removeClass("active");
         $(this).parent().addClass("active");
      });
  
      $(".scrolltoanchor").click(function() {
          $.scrollTo($($(this).attr("href")), {
              duration: 2000
          });
          return false;
      });
  
      // Cache selectors
      var topMenu = $("#collapse-menu"),
      topMenuHeight = topMenu.outerHeight()+15,
      // All list items
      menuItems = topMenu.find("a"),
      // Anchors corresponding to menu items
      scrollItems = menuItems.map(function(){
        var item = $($(this).attr("href"));
        if (item.length) { return item; }
      });
  
      $(window).scroll(function(){
          // Get container scroll position
         var fromTop = $(this).scrollTop()+topMenuHeight;
         // Get id of current scroll item
         var cur = scrollItems.map(function(){
           if ($(this).offset().top < fromTop)
             return this;
         });
          // Get the id of the current element
         cur = cur[cur.length-1];
         var id = cur && cur.length ? cur[0].id : "";
          // Set/remove active class
         menuItems
           .parent().removeClass("active")
           .end().filter("[href='#"+id+"']").parent().addClass("active");
      });
  });
  
  
      
  