diff --git a/ganttzk/src/main/java/org/zkoss/ganttz/timetracker/TimeTrackedTableWithLeftPane.java b/ganttzk/src/main/java/org/zkoss/ganttz/timetracker/TimeTrackedTableWithLeftPane.java
index 91c0e46b7..c6e6b6f4a 100644
--- a/ganttzk/src/main/java/org/zkoss/ganttz/timetracker/TimeTrackedTableWithLeftPane.java
+++ b/ganttzk/src/main/java/org/zkoss/ganttz/timetracker/TimeTrackedTableWithLeftPane.java
@@ -136,6 +136,7 @@ public class TimeTrackedTableWithLeftPane<A, B> {
 
     public void reload() {
         timeTrackedTable.recreate();
+        loadModelForLeftPane();
     }
 
 }
diff --git a/navalplanner-webapp/src/main/java/org/navalplanner/web/planner/allocation/AdvancedAllocationController.java b/navalplanner-webapp/src/main/java/org/navalplanner/web/planner/allocation/AdvancedAllocationController.java
index b451af1d0..2976520ca 100644
--- a/navalplanner-webapp/src/main/java/org/navalplanner/web/planner/allocation/AdvancedAllocationController.java
+++ b/navalplanner-webapp/src/main/java/org/navalplanner/web/planner/allocation/AdvancedAllocationController.java
@@ -370,6 +370,8 @@ public class AdvancedAllocationController extends GenericForwardComposer {
         }
     }
 
+    private static final int VERTICAL_MAX_ELEMENTS = 25;
+
     private IMessagesForUser messages;
     private LayoutRegion insertionPointTimetracker;
     private Div insertionPointLeftPanel;
@@ -378,6 +380,9 @@ public class AdvancedAllocationController extends GenericForwardComposer {
     private Button paginationDownButton;
     private Button paginationUpButton;
 
+    private Button verticalPaginationUpButton;
+    private Button verticalPaginationDownButton;
+
     private TimeTracker timeTracker;
 
     private PaginatorFilter paginatorFilter;
@@ -676,10 +681,11 @@ public class AdvancedAllocationController extends GenericForwardComposer {
     private Component normalLayout;
     private Component noDataLayout;
     private TimeTrackedTableWithLeftPane<Row, Row> timeTrackedTableWithLeftPane;
+    private int verticalIndex = 0;
 
     private List<Row> getRows() {
         if (rowsCached != null) {
-            return rowsCached;
+            return filterRows(rowsCached);
         }
         rowsCached = new ArrayList<Row>();
         for (AllocationInput allocationInput : allocationInputs) {
@@ -693,9 +699,33 @@ public class AdvancedAllocationController extends GenericForwardComposer {
             groupingRow.listenTo(specificRows);
             rowsCached.addAll(specificRows);
         }
-        return rowsCached;
+        return filterRows(rowsCached);
     }
 
+    private List<Row> filterRows(List<Row> rows) {
+        verticalPaginationUpButton.setDisabled(verticalIndex <= 0);
+        verticalPaginationDownButton
+                .setDisabled((verticalIndex + VERTICAL_MAX_ELEMENTS) >= rows
+                        .size());
+        return rows.subList(verticalIndex, Math.min(rows.size(),
+                verticalIndex + VERTICAL_MAX_ELEMENTS));
+    }
+
+    public void verticalPagedown() {
+        verticalIndex = verticalIndex + VERTICAL_MAX_ELEMENTS;
+        timeTrackedTableWithLeftPane.reload();
+    }
+
+    public void setVerticalPagedownButtonDisabled(boolean disabled) {
+        verticalPaginationUpButton.setDisabled(disabled);
+    }
+
+    public void verticalPageup() {
+        verticalIndex = Math.max(verticalIndex - VERTICAL_MAX_ELEMENTS, 0);
+        timeTrackedTableWithLeftPane.reload();
+    }
+
+
     private List<Row> specificRows(AllocationInput allocationInput) {
         List<Row> result = new ArrayList<Row>();
         for (SpecificResourceAllocation specificResourceAllocation : allocationInput.getAggregate()
@@ -980,8 +1010,10 @@ class Row {
         if (isGroupingRow()) {
             Label label = (Label) allHoursInput;
             int totalHours = aggregate.getTotalHours();
-            label.setValue(totalHours + "");
-            Clients.closeErrorBox(label);
+            if (label != null) {
+                label.setValue(totalHours + "");
+                Clients.closeErrorBox(label);
+            }
             if (restriction.isInvalidTotalHours(totalHours)) {
                 restriction.showInvalidHours(messages, totalHours);
             }
diff --git a/navalplanner-webapp/src/main/webapp/common/img/ico_down.png b/navalplanner-webapp/src/main/webapp/common/img/ico_down.png
new file mode 100644
index 000000000..1fd766cb1
Binary files /dev/null and b/navalplanner-webapp/src/main/webapp/common/img/ico_down.png differ
diff --git a/navalplanner-webapp/src/main/webapp/planner/advance_allocation.zul b/navalplanner-webapp/src/main/webapp/planner/advance_allocation.zul
index a499bf27a..ae22b0605 100644
--- a/navalplanner-webapp/src/main/webapp/planner/advance_allocation.zul
+++ b/navalplanner-webapp/src/main/webapp/planner/advance_allocation.zul
@@ -42,15 +42,32 @@
             <button image="/common/img/ico_save.png" tooltiptext="${i18n:_('Accept')}" id="saveButton" class="planner-command"
                 if="${!(advancedAllocationController.advancedAllocationOfSingleTask)}" />
             <separator/>
-            <button tooltiptext="Page down" image="/common/img/ico_left.png" id="paginationDownButton"
-            onClick="advancedAllocationController.paginationDown();" disabled="true" />
             <label>${i18n:_('Zoom level')}:</label>
             <listbox mold="select" rows="1" id="advancedAllocationZoomLevel"
                 model="${advancedAllocationController.zoomLevels}"
                 onSelect="advancedAllocationController.setZoomLevel(self.selectedItem.value);" >
             </listbox>
-            <button tooltiptext="Page up" image="/common/img/ico_right.png" id="paginationUpButton" onClick="advancedAllocationController.paginationUp();" />
+
             <separator/>
+            <label>${i18n:_('Pagination')}:</label>
+            <button tooltiptext="Page down" image="/common/img/ico_left.png" id="paginationDownButton"
+            onClick="advancedAllocationController.paginationDown();" disabled="true" />
+            <listbox mold="select" rows="1" visible="false" id="advancedAllocationHorizontalPagination">
+                <listitem><listcell label="${i18n:_('Dates range')}" /><listcell label="Date Range 2" /><listcell label="Date Range 3 ..." /></listitem>
+            </listbox>
+            <button tooltiptext="Page up" image="/common/img/ico_right.png" id="paginationUpButton"
+            onClick="advancedAllocationController.paginationUp();" />
+
+            <separator/>
+
+            <button tooltiptext="Vertical Page up" image="/common/img/ico_up.png" id="verticalPaginationUpButton"
+            onClick="advancedAllocationController.verticalPageup();" disabled="true" />
+            <listbox mold="select" rows="1" visible="false" id="advancedAllocationVerticalPagination">
+                <listitem><listcell label="${i18n:_('Vertical interval')}" /><listcell label="21-40" /><listcell label="40-" /></listitem>
+            </listbox>
+            <button tooltiptext="Vertical Page down" image="/common/img/ico_down.png" id="verticalPaginationDownButton"
+            onClick="advancedAllocationController.verticalPagedown();" disabled="true" />
+
             <div id="messages" />
         </hbox>
    </north>
diff --git a/navalplanner-webapp/src/main/webapp/planner/css/ganttzk.css b/navalplanner-webapp/src/main/webapp/planner/css/ganttzk.css
index 87a79c321..6bc86b545 100644
--- a/navalplanner-webapp/src/main/webapp/planner/css/ganttzk.css
+++ b/navalplanner-webapp/src/main/webapp/planner/css/ganttzk.css
@@ -921,4 +921,9 @@ body .perspectives-column {
 #timeTracker .second_level_ {
     border-left: solid 2px #9EB6CE;
     border-right: solid 2px #9EB6CE;
-}
\ No newline at end of file
+}
+
+.advanced-assignment-area .timeTrackedTableWithLeftPane div.z-grid {
+    overflow: visible;
+}
+