Added latest build.

Author: reimund

angular-scroll.js

@@ -21,6 +21,9 @@ var duScroll = angular.module('duScroll', [
   .value('duScrollDuration', 350)
   //Scrollspy debounce interval, set to 0 to disable
   .value('duScrollSpyWait', 100)
+  //Scrollspy forced refresh interval, use if your content changes or reflows without scrolling.
+  //0 to disable
+  .value('duScrollSpyRefreshInterval', 0)
   //Wether or not multiple scrollspies can be active at once
   .value('duScrollGreedy', false)
   //Default offset for smoothScroll directive
@@ -254,7 +257,7 @@ angular.module('duScroll.requestAnimation', ['duScroll.polyfill'])
 
 
 angular.module('duScroll.spyAPI', ['duScroll.scrollContainerAPI'])
-.factory('spyAPI', ["$rootScope", "$timeout", "$window", "$document", "scrollContainerAPI", "duScrollGreedy", "duScrollSpyWait", "duScrollBottomSpy", "duScrollActiveClass", function($rootScope, $timeout, $window, $document, scrollContainerAPI, duScrollGreedy, duScrollSpyWait, duScrollBottomSpy, duScrollActiveClass) {
+.factory('spyAPI', ["$rootScope", "$timeout", "$interval", "$window", "$document", "scrollContainerAPI", "duScrollGreedy", "duScrollSpyWait", "duScrollSpyRefreshInterval", "duScrollBottomSpy", "duScrollActiveClass", function($rootScope, $timeout, $interval, $window, $document, scrollContainerAPI, duScrollGreedy, duScrollSpyWait, duScrollSpyRefreshInterval, duScrollBottomSpy, duScrollActiveClass) {
   'use strict';
 
   var createScrollHandler = function(context) {
@@ -283,7 +286,7 @@ angular.module('duScroll.spyAPI', ['duScroll.scrollContainerAPI'])
       for(i = 0; i < spies.length; i++) {
         spy = spies[i];
         pos = spy.getTargetPosition();
-        if (!pos) continue;
+        if (!pos || !spy.$element) continue;
 
         if((duScrollBottomSpy && bottomReached) || (pos.top + spy.offset - containerOffset < 20 && (duScrollGreedy || pos.top*-1 + containerOffset) < pos.height)) {
           //Find the one closest the viewport top or the page bottom if it's reached
@@ -300,7 +303,7 @@ angular.module('duScroll.spyAPI', ['duScroll.scrollContainerAPI'])
         toBeActive = toBeActive.spy;
       }
       if(currentlyActive === toBeActive || (duScrollGreedy && !toBeActive)) return;
-      if(currentlyActive) {
+      if(currentlyActive && currentlyActive.$element) {
         currentlyActive.$element.removeClass(duScrollActiveClass);
         $rootScope.$broadcast(
           'duScrollspy:becameInactive',
@@ -360,6 +363,9 @@ angular.module('duScroll.spyAPI', ['duScroll.scrollContainerAPI'])
   var destroyContext = function($scope) {
     var id = $scope.$id;
     var context = contexts[id], container = context.container;
+    if(context.intervalPromise) {
+      $interval.cancel(context.intervalPromise);
+    }
     if(container) {
       container.off('scroll', context.handler);
     }
@@ -411,6 +417,9 @@ angular.module('duScroll.spyAPI', ['duScroll.scrollContainerAPI'])
         context.container.off('scroll', context.handler);
       }
       context.container = scrollContainerAPI.getContainer(spy.$scope);
+      if (duScrollSpyRefreshInterval && !context.intervalPromise) {
+        context.intervalPromise = $interval(context.handler, duScrollSpyRefreshInterval, 0, false);
+      }
       context.container.on('scroll', context.handler).triggerHandler('scroll');
     }
   };
@@ -595,12 +604,14 @@ angular.module('duScroll.scrollspy', ['duScroll.spyAPI'])
   };
 
   return {
+    scope: { duScrollspy: '=' },
     link: function ($scope, $element, $attr) {
       var href = $attr.ngHref || $attr.href;
       var targetId;
-
       if (href && href.indexOf('#') !== -1) {
         targetId = href.replace(/.*(?=#[^\s]+$)/, '').substring(1);
+      } else if($scope.duScrollspy) {
+        targetId = $scope.duScrollspy;
       } else if($attr.duScrollspy) {
         targetId = $attr.duScrollspy;
       } else if($attr.duSmoothScroll) {