closes #6544

public/src/client/pagination.js

@@ -27,5 +27,13 @@ define('forum/pagination', function () {
 		ajaxify.go(url, callback);
 	};
 
+	pagination.nextPage = function (callback) {
+		pagination.loadPage(ajaxify.data.pagination.currentPage + 1, callback);
+	};
+
+	pagination.previousPage = function (callback) {
+		pagination.loadPage(ajaxify.data.pagination.currentPage - 1, callback);
+	};
+
 	return pagination;
 });

public/src/modules/navigator.js

@@ -212,14 +212,32 @@ define('navigator', ['forum/pagination', 'components'], function (pagination, co
 	}
 
 	navigator.scrollUp = function () {
+		var $window = $(window);
+
+		if (config.usePagination) {
+			var atTop = $window.scrollTop() <= 0;
+			if (atTop) {
+				return pagination.previousPage(function () {
+					$('body,html').scrollTop($(document).height() - $window.height());
+				});
+			}
+		}
 		$('body,html').animate({
-			scrollTop: $(window).scrollTop() - $(window).height(),
+			scrollTop: $window.scrollTop() - $window.height(),
 		});
 	};
 
 	navigator.scrollDown = function () {
+		var $window = $(window);
+
+		if (config.usePagination) {
+			var atBottom = $window.scrollTop() >= $(document).height() - $window.height();
+			if (atBottom) {
+				return pagination.nextPage();
+			}
+		}
 		$('body,html').animate({
-			scrollTop: $(window).scrollTop() + $(window).height(),
+			scrollTop: $window.scrollTop() + $window.height(),
 		});
 	};