diff --git a/html/bilan.php b/html/bilan.php
index 24df77077..a0747d0f1 100644
--- a/html/bilan.php
+++ b/html/bilan.php
@@ -25,6 +25,7 @@ include_once("ac_common.php");
 include_once("impress_inc.php");
 include_once("postgres.php");
 require_once ('header_print.php');
+require_once ('class_bilan.php');
 
 include ('class_user.php');
 require_once('class_dossier.php');
@@ -49,101 +50,19 @@ if ( $User->admin == 0 ) {
 
 }
 
-// A rtf file is generated
-header('Content-type: application/rtf');
- 
- // It will be called downloaded.pdf
-header('Content-Disposition: attachment; filename="bilan.rtf"');
- 
+$bilan=new Bilan($cn);
+$bilan->get_request_get();
+$bilan->load();
+/*\!bug the headers shouldn't be sent here, but it doesn't work
+ * a html header is send before, to fix asap */
+if ( $bilan->b_type=='odt')
+  {
+	header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
+	header("Cache-Control: must-revalidate");
+	header('Content-type: "application/vnd.oasis.opendocument.text"');
+	header('Content-Disposition: attachment;filename="'.$bilan->b_name.'.odt"',FALSE);
+	header("Accept-Ranges: bytes");
 
-// Variable
-// Start periode 
-$start=( isset ($_POST['from_periode']))?$_POST['from_periode']:-1;
-$end=( isset ($_POST['to_periode']))?$_POST['to_periode']:-1;
-
-// Variable if ok ?
-if ( $start*$end < 0 ) {
-  echo_error("Missing Variable start = $start end=$end");
-  exit (-1);
- }
-// Open forms
-$bnb_form=fopen('document/fr_be/bnb.form','r');
-if ( $bnb_form == false) {
-  echo 'Cannot Open';
-  exit();
- }
-$col=array();
-
-// read forms line per line
-while (! feof ($bnb_form)) {
-  $buffer=trim(fgets($bnb_form));
-  echo_debug(__FILE__.":".__LINE__." get buffer = ",$buffer);
-  // $a=(CheckFormula($buffer)  == true)?"$buffer ok<br>":'<font color="red">'.'Pas ok '.$buffer."</font><br>";
-  // echo $a;
-  // blank line are skipped
-  if (strlen(trim($buffer))==0) 
-    continue;
-
-  // buffer contains a formula A$=....
-  // We need to eval it 
-  //ereg("\\$[a-zA-Z]+[0-9]*=",$buffer,$e);
-  //  echo $e[0];
-  //echo "<br>".$form;
-	$a=ParseFormula($cn,"$buffer",$buffer,$start,$end,false);
-	$b=str_replace("$","\$",$a);
-	echo_debug(__FILE__.":".__LINE__."  evaluate ",$b);
-
-	eval("$b;");
-  
- }// end read form line per line
-// echo "<hr>";
-fclose ($bnb_form);
-//-----------------------------------------------------
-// Open the rtf document in order to read it and to 
-// replace the <<>> by the appropriate values
-//
-// Open the rtf template
-$bnb_rtf=fopen('document/fr_be/bnb.rtf','r');
-// $out=fopen('tmp/a.rtf','w+');
-// if ( $bnb_rtf == false) {
-//   echo 'Cannot Open rtf';
-//   exit();
-//  }
-// Read it until the end
-while ( !feof($bnb_rtf) ) {
-  $line_rtf=fgets($bnb_rtf);
-  if ( ereg('<<header>>',$line_rtf) ) {
-	// Create the header
-	$line_rtf=str_replace('<<header>>',header_txt($cn),$line_rtf);
-	echo $line_rtf;
-	continue;
   }
-
-  // the line contains the magic <<
-  if (ereg("<<\\$[a-zA-Z]*[0-9]*>>",$line_rtf,$f2) == true) {
-    // DEBUG
-    //    echo $line_rtf.'<br>';
-
-    // the f2 array contains all the magic << in the line
-    foreach ($f2 as $f2_str) {
-      // DEBUG
-      // echo "single_f2 = $f2_str <br>";
-      // replace single_f2 by its value
-      $f2_value=str_replace("<<","",$f2_str);
-      $f2_value=str_replace(">>","",$f2_value);
-      $f2_value=str_replace("$","",$f2_value);
-      // DEBUG
-      //echo "f2_value=$f2_value";
-      $a=${"$f2_value"};
-      // DEBUG      echo " a = $a";
-      $line_rtf=str_replace($f2_str,$a,$line_rtf);
-
-    }// foreach end
-  }
-  // DEBUG
-  //  fwrite($out,$line_rtf);
-  echo $line_rtf;
-
-
- }// rtf file is read
+$bilan->generate();
 ?>