=== modified file 'dhis-2/dhis-api/src/main/java/org/hisp/dhis/datavalue/DataValue.java'
--- dhis-2/dhis-api/src/main/java/org/hisp/dhis/datavalue/DataValue.java	2011-12-26 10:07:59 +0000
+++ dhis-2/dhis-api/src/main/java/org/hisp/dhis/datavalue/DataValue.java	2012-09-10 16:11:09 +0000
@@ -27,15 +27,16 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+import java.io.Serializable;
+import java.util.Date;
+import java.util.regex.Pattern;
+
 import org.hisp.dhis.common.ImportableObject;
 import org.hisp.dhis.dataelement.DataElement;
 import org.hisp.dhis.dataelement.DataElementCategoryOptionCombo;
 import org.hisp.dhis.organisationunit.OrganisationUnit;
 import org.hisp.dhis.period.Period;
 
-import java.io.Serializable;
-import java.util.Date;
-
 /**
  * @author Kristian Nordal
  * @version $Id: DataValue.java 4638 2008-02-25 10:06:47Z larshelg $
@@ -48,6 +49,8 @@
      */
     private static final long serialVersionUID = 6269303850789110610L;
 
+    private static final Pattern ZERO_PATTERN = Pattern.compile( "^0(\\.0*)?$" );
+    
     public static final String TRUE = "true";
     public static final String FALSE = "false";
 
@@ -167,7 +170,7 @@
     public boolean isZero()
     {
         return dataElement != null && dataElement.getType().equals( DataElement.VALUE_TYPE_INT )
-            && value != null && new Double( value ).intValue() == 0;
+            && value != null && ZERO_PATTERN.matcher( value ).find();
     }
 
     public boolean isNullValue()

=== added directory 'dhis-2/dhis-api/src/test/java/org/hisp/dhis/datavalue'
=== added file 'dhis-2/dhis-api/src/test/java/org/hisp/dhis/datavalue/DataValueTest.java'
--- dhis-2/dhis-api/src/test/java/org/hisp/dhis/datavalue/DataValueTest.java	1970-01-01 00:00:00 +0000
+++ dhis-2/dhis-api/src/test/java/org/hisp/dhis/datavalue/DataValueTest.java	2012-09-10 16:11:09 +0000
@@ -0,0 +1,70 @@
+package org.hisp.dhis.datavalue;
+
+/*
+ * Copyright (c) 2004-2012, University of Oslo
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * * Redistributions of source code must retain the above copyright notice, this
+ *   list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright notice,
+ *   this list of conditions and the following disclaimer in the documentation
+ *   and/or other materials provided with the distribution.
+ * * Neither the name of the HISP project nor the names of its contributors may
+ *   be used to endorse or promote products derived from this software without
+ *   specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+import org.hisp.dhis.dataelement.DataElement;
+import org.junit.Test;
+
+import static junit.framework.Assert.*;
+
+/**
+ * @author Lars Helge Overland
+ */
+public class DataValueTest
+{
+    @Test
+    public void testIsZero()
+    {
+        DataElement dataElement = new DataElement( "A" );
+        dataElement.setType( DataElement.VALUE_TYPE_INT );
+        
+        DataValue dataValue = new DataValue();
+        dataValue.setDataElement( dataElement );
+        
+        dataValue.setValue( "5" );
+        assertFalse( dataValue.isZero() );
+
+        dataValue.setValue( "0.2" );
+        assertFalse( dataValue.isZero() );
+
+        dataValue.setValue( "0.00001" );
+        assertFalse( dataValue.isZero() );
+        
+        dataValue.setValue( "String" );
+        assertFalse( dataValue.isZero() );        
+
+        dataValue.setValue( "0" );
+        assertTrue( dataValue.isZero() );
+        
+        dataValue.setValue( "0.0" );
+        assertTrue( dataValue.isZero() );
+        
+        dataValue.setValue( "0.0000" );
+        assertTrue( dataValue.isZero() );
+    }
+}

=== modified file 'dhis-2/dhis-web/dhis-web-commons-resources/src/main/webapp/dhis-web-commons/javascripts/commons.js'
--- dhis-2/dhis-web/dhis-web-commons-resources/src/main/webapp/dhis-web-commons/javascripts/commons.js	2012-08-14 09:50:07 +0000
+++ dhis-2/dhis-web/dhis-web-commons-resources/src/main/webapp/dhis-web-commons/javascripts/commons.js	2012-09-10 16:11:09 +0000
@@ -1482,7 +1482,7 @@
  */
 function isValidZeroNumber( value )
 {
-	var regex = /^0(?:\.0*)?$/;
+	var regex = /^0(\.0*)?$/;
 	return regex.test( value );
 }