diff --git a/html/ajax_misc.php b/html/ajax_misc.php
index bc8830d35..8dbd3112d 100644
--- a/html/ajax_misc.php
+++ b/html/ajax_misc.php
@@ -53,7 +53,7 @@ foreach ($var as $v)
     }
 }
 if ( $cont != 0 ) exit();
-extract($_GET );
+extract($_REQUEST );
 set_language();
 
 $cn=new Database($gDossier);
@@ -442,4 +442,10 @@ EOF;
 case 'mod_doc':
   require_once('modify_mod_document.inc.php');
   break;
+case 'input_per':
+  require_once('modify_periode.inc.php');
+  break;
+case 'save_per':
+  require_once('modify_periode.inc.php');
+  break;
 }
diff --git a/html/js/scripts.js b/html/js/scripts.js
index bb439c761..4bc638d4c 100644
--- a/html/js/scripts.js
+++ b/html/js/scripts.js
@@ -859,11 +859,90 @@ function show_calc()
     shtml+='<form name="calc_line"  method="GET" onSubmit="cal();return false;" >Cette calculatrice vous permet de calculer, écrivez simplement les opérations que vous voulez puis la touche retour. exemple : 1+2+3*(1/5) <input class="input_text" type="text" size="30" id="inp" name="calculator"> <input type="button" value="Efface tout" onClick="Clean();return false;" > <input type="button" value="Fermer" onClick="removeDiv(\'calc1\')" >';
     shtml+='</form><span id="result">  </span><br><span id="sub_total">  Taper une formule (ex 20*5.1) puis enter  </span><br><span id="listing"> </span>';
 
-var obj={id:
-         sid,html:
-         shtml,drag:
-         true,style:'position:absolute;display:block;top:30px;left:150px;width:250px;border:1px solid black;background-color:#99b1df;font-size:12;padding: 2 2 2 2;'
-            };
+var obj={id:sid,html:shtml,
+	 drag:true,style:'position:absolute;display:block;top:30px;left:150px;width:250px;border:1px solid black;background-color:#99b1df;font-size:12;padding: 2 2 2 2;'
+        };
     add_div(obj);
     this.document.getElementById('inp').focus();
 }
+function display_periode(p_dossier,p_id)
+{
+
+     try
+    {
+        var queryString="gDossier="+p_dossier+"&op=input_per"+"&p_id="+p_id;
+	var popup={'id': 'mod_periode','cssclass':'op_detail','html':loading(),'style':'position:fixed;top:45%;left:45%',
+		   'drag':true};
+	if ( ! $('mod_periode') ) {
+	    add_div(popup);
+	}
+        var action = new Ajax.Request(
+            "ajax_misc.php" ,
+            { method:'get',
+              parameters:queryString,
+              onFailure:ajax_misc_failure,
+              onSuccess:success_display_periode
+            }
+        );
+    }
+    catch (e)
+    {
+        alert("display_periode "+e.message);
+    }
+   
+}
+function success_display_periode(req)
+{    try
+    {
+
+        var answer=req.responseXML;
+        var html=answer.getElementsByTagName('data');
+
+        if ( html.length == 0 )
+        {
+            var rec=req.responseText;
+            alert ('erreur :'+rec);
+        }
+
+        var code_html=getNodeText(html[0]);
+        code_html=unescape_xml(code_html);
+
+        $('mod_periode').innerHTML=code_html;
+    }
+    catch (e)
+    {
+        alert("success_display_periode".e.message);
+    }
+    try
+    {
+        code_html.evalScripts();
+    }
+    catch(e)
+    {
+        alert("success_display_periode Impossible executer script de la reponse\n"+e.message);
+    }
+
+}
+function save_periode(obj)
+{
+     try
+    {
+        var queryString="?"+$(obj).serialize()+"&op=save_per";
+
+        var action = new Ajax.Request(
+            "ajax_misc.php" ,
+            { method:'post',
+              parameters:queryString,
+              onFailure:ajax_misc_failure,
+              onSuccess:success_display_periode
+            }
+        );
+
+    }
+    catch (e)
+    {
+        alert("display_periode "+e.message);
+    }
+
+    return false;
+}
\ No newline at end of file
diff --git a/include/class_html_input.php b/include/class_html_input.php
index 7ade1266c..aff77935d 100755
--- a/include/class_html_input.php
+++ b/include/class_html_input.php
@@ -372,4 +372,11 @@ class HtmlInput
         ob_clean();
         return $r;
     }
+    static function display_periode($p_id)
+    {
+      $r=sprintf('<a href="javascript:void(0)" onclick="display_periode(%d,%d)">Modifier</a>',
+		 dossier::id(),
+		 $p_id);
+      return $r;
+    }
 }
diff --git a/include/class_periode.php b/include/class_periode.php
index 615dcbe9d..5ddd0af13 100644
--- a/include/class_periode.php
+++ b/include/class_periode.php
@@ -133,16 +133,8 @@ class Periode
             $this->cn->exec_sql("update jrn_periode set status='OP' ".
                                 " where jrn_def_id=".$this->jrn_def_id." and ".
                                 " p_id = ".$this->p_id);
-            /* if all ledgers have this periode open then synchro with
-            the table parm_periode
-            */
-            $nJrn=$this->cn->count_sql( "select * from jrn_periode where ".
-                                        " p_id=".$this->p_id);
-            $nJrnPeriode=$this->cn->count_sql( "select * from jrn_periode where ".
-                                               " p_id=".$this->p_id." and status='OP'");
-
-            if ( $nJrnPeriode==$nJrn)
-                $this->cn->exec_sql("update parm_periode set p_closed=false where p_id=".$this->p_id);
+	    /* if one ledger is open then the periode is open */
+	    $this->cn->exec_sql("update parm_periode set p_closed=false where p_id=".$this->p_id);
             return;
         }
 
@@ -244,12 +236,22 @@ class Periode
                 {
                     $closed='<TD class="mtitle">';
                     $closed.='<A class="mtitle" HREF="?p_action=periode&action=closed&p_per='.$l_line['p_id'].'&'.$str_dossier.'" onclick="return confirm(\''._('Confirmez cloture').' ?\')"> Cloturer</A></td>';
-                    $change='<TD class="mtitle">';
+
+                    if ($l_line['count_op'] == 0 )
+                    {
+		      $change=HtmlInput::display_periode($l_line['p_id']);
+                    }
+                    else
+                    {
+		      $change="Non modifiable";
+                    }
+		    $change=td($change);
+		    /*
                     $change.='<A class="mtitle" HREF="?p_action=periode&action=change_per&p_per='.
                              $l_line['p_id']."&p_date_start=".$l_line['date_start'].
                              "&p_date_end=".$l_line['date_end']."&p_exercice=".
                              $l_line['p_exercice']."&$str_dossier\"> Changer</A></td>";
-
+		    */
 		    $reopen=td("");
 
 
diff --git a/include/modify_periode.inc.php b/include/modify_periode.inc.php
new file mode 100644
index 000000000..633176d5c
--- /dev/null
+++ b/include/modify_periode.inc.php
@@ -0,0 +1,104 @@
+<?php
+/*
+ *   This file is part of PhpCompta.
+ *
+ *   PhpCompta is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 2 of the License, or
+ *   (at your option) any later version.
+ *
+ *   PhpCompta is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with PhpCompta; if not, write to the Free Software
+ *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+/* $Revision$ */
+
+// Copyright Author Dany De Bontridder ddebontridder@yahoo.fr
+require_once('class_periode.php');
+
+/*!\file
+ * \brief display or save a periode
+ * variable received $op, $cn $user
+ */
+$err=0;$html='';
+  /* we check the security */
+ if ( $user->check_action(PARPER) == 0 )
+   {
+     $html='<div class="error">Accès interdit</div>';
+     $err=1;
+   } 
+ else 
+   {
+     switch ($op)
+       {
+       case 'input_per':
+	 $per=new Periode($cn,$_GET['p_id']);
+	 $per->load();
+	 $limit=$per->get_date_limit($_GET['p_id']);
+
+	 $p_start=new IDate('p_start');
+	 $p_start->value=$limit['p_start'];
+	 $p_end = new IDate('p_end');
+	 $p_end->value = $limit['p_end'];
+	 $p_exercice=new INum('p_exercice');
+	 $p_exercice->value=$per->p_exercice;
+
+	 $html='<h2 class="info"> Modifier les dates de début et fin de période</h2>';
+	 $html.='<p class="notice">Cela pourrait avoir un impact sur les opérations déjà existantes</p>';
+	 $html.='<form method="post" onsubmit="return save_periode(this)">';
+	 $html.=dossier::hidden();
+	 $html.='<table>';
+
+	 $html.=tr(td(' Début période : ').td($p_start->input()));
+	 $html.=tr(td(' Fin période : ').td($p_end->input()));
+	 $html.=tr(td(' Exercice : ').td($p_exercice->input()));
+
+	 $html.=HtmlInput::submit('sauver','sauver');
+	 $html.=HtmlInput::button('close','Fermer','onclick="removeDiv(\'mod_periode\')"');
+	 $html.=HtmlInput::hidden('p_id',$_GET['p_id']);
+	 $html.='</form>';
+	 break;
+       case 'save_per':
+	 $per=new Periode($cn,$_POST['p_id']);
+	 $per->load();
+	 if ( isDate($_POST['p_start']) == null || 
+	      isDate($_POST['p_end'] == null ) ||
+	      isNumber($_POST['p_exercice']) == 0 ||
+	      $_POST['p_exercice'] > 2099 ||
+	      $_POST['p_exercice'] < 2000 )
+	   {
+	     $html='<h2 class="info"> Modifier les dates de début et fin de période</h2>';
+	     $html.="<div class=\"error\">Erreur date invalide</div>";
+
+	     $html.=HtmlInput::button('close','Fermer','onclick="removeDiv(\'mod_periode\')"');
+	   } 
+	 else 
+	   {
+	     $sql="update parm_periode set p_start=to_date($1,'DD.MM.YYYY'),p_end=to_date($2,'DD.MM.YYYY'),p_exercice=$3 where p_id=$4";
+	     try {
+	       $cn->exec_sql($sql,array($_POST['p_start'],$_POST['p_end'],$_POST['p_exercice'],$_POST['p_id']));
+	       $html='<h2 class="info"> Modifier les dates de début et fin de période</h2>';
+	       $html.='<h2 class="notice"> Sauvé </h2>';
+	       
+	       $html.=HtmlInput::button('close','Fermer','onclick="	refresh_window();"');
+
+
+	     } catch (Exception $e) {
+	       $html=alert($e->getTrace(),true);
+	     }
+	     
+	   }
+	 break; 
+       }
+   }
+$html=escape_xml($html);
+header('Content-type: text/xml; charset=UTF-8');
+echo '<?xml version="1.0" encoding="UTF-8"?>';
+echo '<xml>';
+echo '<data>'.$html.'</data>';
+echo '</xml>';
\ No newline at end of file