diff --git a/htdocs/html.form.class.php b/htdocs/html.form.class.php
index bf07356d51e..9fd690fade5 100644
--- a/htdocs/html.form.class.php
+++ b/htdocs/html.form.class.php
@@ -2058,7 +2058,38 @@ class Form
         }
       print '</select>';
     }
-  
+
+
+
+
+    /**
+     *  \brief      Selection des unites de poids
+     *  \param      name                Nom champ html
+     *  \param      default             Forçage de l'unite
+     *  \remarks pour l'instant on ne definit pas les unites dans la base
+     */
+    function select_weight_units($name='weight_units', $default='0', $adddefault=0)
+    {
+      global $langs,$conf,$mysoc;
+
+      $units[3] = "Tonne";
+      $units[0] = "kg";
+      $units[-3] = "g";
+           
+      print '<select class="flat" name="'.$name.'">';
+      if ($adddefault) print '<option value="0">'.$langs->trans("Default").'</option>';
+      
+      foreach ($units as $key => $value)
+        {
+	  print '<option value="'.$key.'"';
+	  if ($key == $default)
+            {
+	      print ' selected="true"';
+            }
+	  print '>'.$value.'</option>';	  	  
+        }
+      print '</select>';
+    }
 
     function load_tva($name='tauxtva', $defaulttx='', $societe_vendeuse='', $societe_acheteuse='', $taux_produit='')
     {