diff --git a/navalplanner-gantt-zk/src/main/java/org/zkoss/ganttz/ListDetails.java b/navalplanner-gantt-zk/src/main/java/org/zkoss/ganttz/ListDetails.java
index 3e1d05d44..0ee6bd888 100644
--- a/navalplanner-gantt-zk/src/main/java/org/zkoss/ganttz/ListDetails.java
+++ b/navalplanner-gantt-zk/src/main/java/org/zkoss/ganttz/ListDetails.java
@@ -1,6 +1,7 @@
 package org.zkoss.ganttz;
 
 import java.util.Date;
+import java.util.List;
 import java.util.UUID;
 
 import org.apache.commons.logging.Log;
@@ -12,6 +13,7 @@ import org.zkoss.zk.ui.HtmlMacroComponent;
 public class ListDetails extends HtmlMacroComponent {
 
     private static Log LOG = LogFactory.getLog(ListDetails.class);
+    private TaskRemovedListener taskRemovedListener;
 
     public ListDetails() {
         LOG.info("constructing list details");
@@ -21,6 +23,26 @@ public class ListDetails extends HtmlMacroComponent {
         return (Planner) getParent();
     }
 
+    private List<TaskDetail> getTaskDetails() {
+        List<Object> children = getInsertionPoint().getChildren();
+        return Planner.findComponentsOfType(TaskDetail.class, children);
+    }
+
+    public void taskRemoved(Task taskRemoved) {
+        List<TaskDetail> taskDetails = getTaskDetails();
+        for (TaskDetail taskDetail : taskDetails) {
+            if (taskDetail.getTaskId().equals(taskRemoved.getId())) {
+                removeDetail(taskDetail);
+                return;
+            }
+        }
+        throw new RuntimeException("not found taskDetail for " + taskRemoved);
+    }
+
+    private void removeDetail(TaskDetail taskDetail) {
+        getInsertionPoint().getChildren().remove(taskDetail);
+    }
+
     public void addTask() {
         TaskDetail taskDetail = new TaskDetail();
         String newId = UUID.randomUUID().toString();
@@ -29,7 +51,7 @@ public class ListDetails extends HtmlMacroComponent {
         taskDetail.setDynamicProperty("length", "30 days");
         taskDetail.setDynamicProperty("taskName", Labels
                 .getLabel("task.new_task_name"));
-        Component insertionPoint = getFellow("insertionPoint");
+        Component insertionPoint = getInsertionPoint();
         taskDetail.setParent(insertionPoint);
         taskDetail.afterCompose();
         Task task = new Task();
@@ -38,4 +60,8 @@ public class ListDetails extends HtmlMacroComponent {
         task.setId(newId);
     }
 
+    private Component getInsertionPoint() {
+        return getFellow("insertionPoint");
+    }
+
 }
diff --git a/navalplanner-gantt-zk/src/main/java/org/zkoss/ganttz/Planner.java b/navalplanner-gantt-zk/src/main/java/org/zkoss/ganttz/Planner.java
index 62073b6ab..cfe16b510 100644
--- a/navalplanner-gantt-zk/src/main/java/org/zkoss/ganttz/Planner.java
+++ b/navalplanner-gantt-zk/src/main/java/org/zkoss/ganttz/Planner.java
@@ -25,7 +25,7 @@ public class Planner extends XulElement implements AfterCompose {
     public Planner() {
     }
 
-    private TaskList getTaskList() {
+    TaskList getTaskList() {
         List<Object> children = findOneComponentOfType(GanttPanel.class)
                 .getChildren();
         return Planner.findComponentsOfType(TaskList.class, children).get(0);
@@ -77,6 +77,11 @@ public class Planner extends XulElement implements AfterCompose {
         return findComponentsOfType(DependencyList.class, children).get(0);
     }
 
+    private ListDetails getDetails() {
+        List<Object> children = getChildren();
+        return Planner.findComponentsOfType(ListDetails.class, children).get(0);
+    }
+
     @Override
     public void afterCompose() {
         TaskList taskList = getTaskList();
@@ -91,6 +96,8 @@ public class Planner extends XulElement implements AfterCompose {
             @Override
             public void taskRemoved(Task taskRemoved) {
                 dependencyRegistry.remove(taskRemoved.getTaskBean());
+                getDetails().taskRemoved(taskRemoved);
+                getGanntPanel().invalidate();
             }
         };
         taskList.addTaskRemovedListener(taskRemovedListener);
diff --git a/navalplanner-gantt-zk/src/main/java/org/zkoss/ganttz/Task.java b/navalplanner-gantt-zk/src/main/java/org/zkoss/ganttz/Task.java
index 100c32844..58a6aa9ec 100755
--- a/navalplanner-gantt-zk/src/main/java/org/zkoss/ganttz/Task.java
+++ b/navalplanner-gantt-zk/src/main/java/org/zkoss/ganttz/Task.java
@@ -203,7 +203,6 @@ public class Task extends Div {
     // Command action to do
     void doUpdatePosition(String leftX, String topY) {
         System.out.println("leftX:" + getLeft() + "newLeft:" + leftX);
-        setTop(topY);
         this.taskBean.setBeginDate(getMapper().toDate(stripPx(leftX)));
     }