diff --git a/ganttzk/src/main/java/org/zkoss/ganttz/timetracker/zoom/DetailItem.java b/ganttzk/src/main/java/org/zkoss/ganttz/timetracker/zoom/DetailItem.java
index edae81347..281f574eb 100644
--- a/ganttzk/src/main/java/org/zkoss/ganttz/timetracker/zoom/DetailItem.java
+++ b/ganttzk/src/main/java/org/zkoss/ganttz/timetracker/zoom/DetailItem.java
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2009-2010 Fundación para o Fomento da Calidade Industrial e
  *                         Desenvolvemento Tecnolóxico de Galicia
- * Copyright (C) 2010-2011 Igalia, S.L.
+ * Copyright (C) 2010-2012 Igalia, S.L.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Affero General Public License as published by
@@ -50,6 +50,9 @@ public final class DetailItem {
     private boolean currentPeriod;
     private int currentDayOffset;
 
+    private boolean projectStart = false;
+    private int projectStartOffset = 0;
+
     private boolean deadlinePeriod;
     private int deadlineOffset;
 
@@ -103,6 +106,17 @@ public final class DetailItem {
         }
     }
 
+    public void markProjectStart(DateTime projectStart) {
+        if (!this.startDate.isAfter(projectStart)
+                && projectStart.isBefore(endDate)) {
+            int offsetInPx = Math.round((((float) Days.daysBetween(
+                    this.startDate, projectStart).getDays()) / ((float) Days
+                    .daysBetween(this.startDate, this.endDate).getDays()))
+                    * this.size);
+            this.markprojectStart(Math.min(this.size - 1, offsetInPx));
+        }
+    }
+
     public void markDeadlineDay(DateTime deadline) {
         if (!this.startDate.isAfter(deadline) && deadline.isBefore(endDate)) {
             int offsetInPx = Math.round((((float) Days.daysBetween(
@@ -144,6 +158,11 @@ public final class DetailItem {
         this.deadlineOffset = offset;
     }
 
+    public void markprojectStart(int offset) {
+        this.projectStart = true;
+        this.projectStartOffset = offset;
+    }
+
     public boolean isEven() {
         return even;
     }
@@ -164,6 +183,14 @@ public final class DetailItem {
         return currentDayOffset;
     }
 
+    public boolean isProjectStart() {
+        return projectStart;
+    }
+
+    public int getProjectStartOffset() {
+        return projectStartOffset;
+    }
+
     public boolean isDeadlinePeriod() {
         return deadlinePeriod;
     }
diff --git a/ganttzk/src/main/resources/web/ganttz/zul/timetracker/timetrackersecondlevel.zul b/ganttzk/src/main/resources/web/ganttz/zul/timetracker/timetrackersecondlevel.zul
index c8db8f08a..0291f5143 100644
--- a/ganttzk/src/main/resources/web/ganttz/zul/timetracker/timetrackersecondlevel.zul
+++ b/ganttzk/src/main/resources/web/ganttz/zul/timetracker/timetrackersecondlevel.zul
@@ -3,7 +3,7 @@
 
   Copyright (C) 2009-2010 Fundación para o Fomento da Calidade Industrial e
                           Desenvolvemento Tecnolóxico de Galicia
-  Copyright (C) 2010-2011 Igalia, S.L.
+  Copyright (C) 2010-2012 Igalia, S.L.
 
   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU Affero General Public License as published by
@@ -32,6 +32,7 @@
                 <n:td class="${(top.weekLevel)?'week-level':''} timetracker_column${(each.even)?'_even':''}${(each.bankHoliday?' bankHoliday':'')}"
                     forEach="${top.detailsSecondLevel}"
                     style="width: ${each.size}px;background-position: ${each.bankHolidayWeek}; ">
+                    <n:div if="${each.projectStart}" class="timetracker_column_start" style="background-position: ${each.projectStartOffset}px;" />
                     <n:div if="${each.currentPeriod and !(each.deadlinePeriod)}" class="timetracker_column_today" style="background-position: ${each.currentDayOffset}px; width:auto;height:100%" />
                     <n:div if="${each.deadlinePeriod and !(each.currentPeriod)}" class="timetracker_column_deadline" style="background-position: ${each.deadlineOffset}px; width:auto;height:100%" />
                     <n:div if="${each.currentPeriod and each.deadlinePeriod}" class="timetracker_column_today_deadline" style="background-position: ${each.currentDayOffset}px 0, ${each.deadlineOffset}px 0; width:auto;height:100%" />
diff --git a/libreplan-webapp/src/main/java/org/libreplan/web/planner/order/OrderPlanningModel.java b/libreplan-webapp/src/main/java/org/libreplan/web/planner/order/OrderPlanningModel.java
index 42d1fe578..b0bfe2aa1 100644
--- a/libreplan-webapp/src/main/java/org/libreplan/web/planner/order/OrderPlanningModel.java
+++ b/libreplan-webapp/src/main/java/org/libreplan/web/planner/order/OrderPlanningModel.java
@@ -151,6 +151,7 @@ import org.zkoss.zul.Vbox;
 /**
  * @author Óscar González Fernández <ogonzalez@igalia.com>
  * @author Manuel Rego Casasnovas <rego@igalia.com>
+ * @author Lorenzo Tilve Álvaro <ltilve@igalia.com>
  */
 @Component
 @Scope(BeanDefinition.SCOPE_PROTOTYPE)
@@ -709,24 +710,26 @@ public class OrderPlanningModel implements IOrderPlanningModel {
             configuration.setSecondLevelModificators(SeveralModificators
                             .create(BankHolidaysMarker.create(orderReloaded
                                     .getCalendar()),
-                            createDeadlineShower(orderReloaded.getDeadline())));
+                            createStartAndDeadlineMarker(orderReloaded)));
         } else {
             configuration.setSecondLevelModificators(BankHolidaysMarker.create(orderReloaded.getCalendar()));
         }
     }
 
-    private IDetailItemModificator createDeadlineShower(Date orderDeadline) {
-        final DateTime deadline = new DateTime(orderDeadline);
-        IDetailItemModificator deadlineMarker = new IDetailItemModificator() {
+    private IDetailItemModificator createStartAndDeadlineMarker(Order order) {
+        final DateTime deadline = new DateTime(order.getDeadline());
+        final DateTime projectStart = new DateTime(order.getInitDate());
+        IDetailItemModificator startAndDeadlineMarker = new IDetailItemModificator() {
 
             @Override
             public DetailItem applyModificationsTo(DetailItem item,
                     ZoomLevel zoomlevel) {
                 item.markDeadlineDay(deadline);
+                item.markProjectStart(projectStart);
                 return item;
             }
         };
-        return deadlineMarker;
+        return startAndDeadlineMarker;
     }
 
     private void selectTab(String tabName) {
diff --git a/libreplan-webapp/src/main/webapp/planner/css/ganttzk.css b/libreplan-webapp/src/main/webapp/planner/css/ganttzk.css
index 059d12e74..0b7713e16 100644
--- a/libreplan-webapp/src/main/webapp/planner/css/ganttzk.css
+++ b/libreplan-webapp/src/main/webapp/planner/css/ganttzk.css
@@ -424,6 +424,15 @@ div.box.limiting-unassigned {
     background-repeat: repeat-y;
 }
 
+#watermark .timetracker_column_start {
+    background-image: url("../img/watermark_start.png");
+    background-repeat: repeat-y;
+    width: 100%;
+    height: 100%;
+    float: left;
+}
+
+
 #watermark .timetracker_column_deadline {
     background-image:
         url("../../zkau/web/ganttz/img/pixel.gif");
diff --git a/libreplan-webapp/src/main/webapp/planner/img/watermark_start.png b/libreplan-webapp/src/main/webapp/planner/img/watermark_start.png
new file mode 100644
index 000000000..5932a216a
Binary files /dev/null and b/libreplan-webapp/src/main/webapp/planner/img/watermark_start.png differ