diff --git a/htdocs/comm/propal/class/propal.class.php b/htdocs/comm/propal/class/propal.class.php
index 62591e8251c..adcb74a7178 100644
--- a/htdocs/comm/propal/class/propal.class.php
+++ b/htdocs/comm/propal/class/propal.class.php
@@ -1763,7 +1763,7 @@ class Propal extends CommonObject
 					$file = $conf->propale->dir_output . "/" . $propalref . "/" . $propalref . ".pdf";
 					if (file_exists($file))
 					{
-						propale_delete_preview($this->db, $this->id, $this->ref);
+						dol_delete_preview($this);
 
 						if (!dol_delete_file($file))
 						{
diff --git a/htdocs/commande/class/commande.class.php b/htdocs/commande/class/commande.class.php
index e40ef308228..7ce4770e607 100644
--- a/htdocs/commande/class/commande.class.php
+++ b/htdocs/commande/class/commande.class.php
@@ -2342,7 +2342,7 @@ class Commande extends CommonObject
             $file = $conf->commande->dir_output . "/" . $comref . "/" . $comref . ".pdf";
             if (file_exists($file))	// We must delete all files before deleting directory
             {
-                dol_delete_preview($object);
+                dol_delete_preview($this);
 
                 if (!dol_delete_file($file))
                 {
diff --git a/htdocs/core/lib/files.lib.php b/htdocs/core/lib/files.lib.php
index 717a6ba4ec4..1ac34878050 100644
--- a/htdocs/core/lib/files.lib.php
+++ b/htdocs/core/lib/files.lib.php
@@ -726,7 +726,15 @@ function dol_delete_preview($object)
 	global $langs,$conf;
     require_once(DOL_DOCUMENT_ROOT."/core/lib/files.lib.php");
 
-    if ($object->element == 'commande') $dir = $conf->commande->dir_output;
+    if ($object->element == 'commande')             $dir = $conf->commande->dir_output;
+    elseif ($object->element == 'propal')           $dir = $conf->propale->dir_output;
+    elseif ($object->element == 'ficheinter')       $dir = $conf->ficheinter->dir_output;
+    elseif ($object->element == 'order_supplier')   $dir = $conf->fournisseur->dir_output.'/commande';
+    elseif ($object->element == 'invoice_supplier') $dir = $conf->fournisseur->dir_output.'/facture';
+    elseif ($object->element == 'project')          $dir = $conf->projet->dir_output;
+    elseif ($object->element == 'delivery')         $dir = $conf->livraison->dir_output;
+    elseif ($object->element == 'facture')          $dir = $conf->facture->dir_output;
+    elseif ($object->element == 'don')              $dir = $conf->don->dir_output;
     if (empty($dir)) return 'ErrorObjectNoSupportedByFunction';
 
 	$refsan = dol_sanitizeFileName($object->ref);
@@ -762,6 +770,58 @@ function dol_delete_preview($object)
 	return 1;
 }
 
+/**
+*	Create a meta file with document file into same directory.
+*  This should allow rgrep search
+*
+*	@param	Object	$object		Object
+*	@return	void
+*/
+function dol_meta_create($object)
+{
+    global $langs,$conf;
+
+    $object->fetch_thirdparty();
+
+    if ($conf->facture->dir_output)
+    {
+        $facref = dol_sanitizeFileName($object->ref);
+        $dir = $conf->facture->dir_output . "/" . $facref ;
+        $file = $dir . "/" . $facref . ".meta";
+
+        if (! is_dir($dir))
+        {
+            create_exdir($dir);
+        }
+
+        if (is_dir($dir))
+        {
+            $nblignes = count($object->lines);
+            $client = $object->client->nom . " " . $object->client->address . " " . $object->client->cp . " " . $object->client->ville;
+            $meta = "REFERENCE=\"" . $object->ref . "\"
+			DATE=\"" . dol_print_date($object->date,'') . "\"
+			NB_ITEMS=\"" . $nblignes . "\"
+			CLIENT=\"" . $client . "\"
+			TOTAL_HT=\"" . $object->total_ht . "\"
+			TOTAL_TTC=\"" . $object->total_ttc . "\"\n";
+
+            for ($i = 0 ; $i < $nblignes ; $i++)
+            {
+                //Pour les articles
+            $meta .= "ITEM_" . $i . "_QUANTITY=\"" . $object->lines[$i]->qty . "\"
+				ITEM_" . $i . "_UNIT_PRICE=\"" . $object->lines[$i]->price . "\"
+            ITEM_" . $i . "_TVA=\"" .$object->lines[$i]->tva_tx . "\"
+            ITEM_" . $i . "_DESCRIPTION=\"" . str_replace("\r\n","",nl2br($object->lines[$i]->desc)) . "\"
+            ";
+    }
+    }
+    $fp = fopen($file,"w");
+    fputs($fp,$meta);
+    fclose($fp);
+    if (! empty($conf->global->MAIN_UMASK))
+		@chmod($file, octdec($conf->global->MAIN_UMASK));
+	}
+}
 
 /**
  * Get and save an upload file (for example after submitting a new file a mail form).
diff --git a/htdocs/core/modules/dons/modules_don.php b/htdocs/core/modules/dons/modules_don.php
index 02c25f41f61..eeb7771e853 100644
--- a/htdocs/core/modules/dons/modules_don.php
+++ b/htdocs/core/modules/dons/modules_don.php
@@ -173,12 +173,11 @@ function don_create($db, $id, $message, $modele, $outputlangs)
         $sav_charset_output=$outputlangs->charset_output;
         if ($obj->write_file($id,$outputlangs) > 0)
         {
-            // Success. We build meta file
-            don_meta_create($db, $id);
-            // et on supprime l'image correspondant au preview
-            don_delete_preview($db, $id);
-
             $outputlangs->charset_output=$sav_charset_output;
+
+			// we delete preview files
+        	require_once(DOL_DOCUMENT_ROOT."/core/lib/files.lib.php");
+            dol_delete_preview($object);
             return 1;
         }
         else
@@ -196,34 +195,4 @@ function don_create($db, $id, $message, $modele, $outputlangs)
     }
 }
 
-/**
- *	\brief       Cree un meta fichier a cote de la facture sur le disque pour faciliter les recherches en texte plein. Pourquoi ? tout simplement parcequ'en fin d'exercice quand je suis avec mon comptable je n'ai pas de connexion internet "rapide" pour retrouver en 2 secondes une facture non pay�e ou compliqu�e � g�rer ... avec un rgrep c'est vite fait bien fait [eric seigne
- *	\param	    db  		Objet base de donnee
- *	\param	    donid		Id du don a creer
- *	\param       message     Message
- */
-function don_meta_create($db, $donid, $message="")
-{
-    global $langs,$conf;
-
-    $don = new Don($db);
-    $don->id=$donid;
-    $don->fetch($donid);
-}
-
-
-/**
- *	\brief       Supprime l'image de previsualitation, pour le cas de r�g�n�ration de facture
- *	\param	    db  		Objet base de donnee
- *	\param	    donid		Id du don
- */
-function don_delete_preview($db, $donid)
-{
-    global $langs,$conf;
-
-    $don = new Don($db);
-    $don->id=$donid;
-    $don->fetch($donid);
-}
-
 ?>
diff --git a/htdocs/core/modules/expedition/pdf/ModelePdfExpedition.class.php b/htdocs/core/modules/expedition/pdf/ModelePdfExpedition.class.php
index 1a637144546..2ba0f1883b8 100644
--- a/htdocs/core/modules/expedition/pdf/ModelePdfExpedition.class.php
+++ b/htdocs/core/modules/expedition/pdf/ModelePdfExpedition.class.php
@@ -116,8 +116,10 @@ function expedition_pdf_create($db, $object, $modele, $outputlangs)
 		if ($obj->write_file($object, $outputlangs) > 0)
 		{
 			$outputlangs->charset_output=$sav_charset_output;
-			// on supprime l'image correspondant au preview
-			//expedition_delete_preview($db, $id);
+
+			// we delete preview files
+        	//require_once(DOL_DOCUMENT_ROOT."/core/lib/files.lib.php");
+			//dol_delete_preview($object);
 			return 1;
 		}
 		else
diff --git a/htdocs/core/modules/facture/modules_facture.php b/htdocs/core/modules/facture/modules_facture.php
index d50a9ecac1b..386fc2e5feb 100644
--- a/htdocs/core/modules/facture/modules_facture.php
+++ b/htdocs/core/modules/facture/modules_facture.php
@@ -209,13 +209,15 @@ function facture_pdf_create($db, $object, $message, $modele, $outputlangs, $hide
 		$sav_charset_output=$outputlangs->charset_output;
 		if ($obj->write_file($object, $outputlangs, $srctemplatepath, $hidedetails, $hidedesc, $hideref, $hookmanager) > 0)
 		{
-			// Success in building document. We build meta file.
-			facture_meta_create($db, $object->id);
-			// et on supprime l'image correspondant au preview
-			facture_delete_preview($db, $object->id);
-
 			$outputlangs->charset_output=$sav_charset_output;
 
+			// We delete old preview
+			require_once(DOL_DOCUMENT_ROOT."/core/lib/files.lib.php");
+			dol_delete_preview($object);
+
+			// Success in building document. We build meta file.
+			dol_meta_create($object);
+
 			// Appel des triggers
 			include_once(DOL_DOCUMENT_ROOT . "/core/class/interfaces.class.php");
 			$interface=new Interfaces($db);
@@ -240,93 +242,4 @@ function facture_pdf_create($db, $object, $message, $modele, $outputlangs, $hide
 	}
 }
 
-/**
- *	Create a meta file with document file into same directory.
- *  This should allow rgrep search
- *
- *	@param	    db  		Objet base de donnee
- *	@param	    facid		Id de la facture a creer
- *	@param      message     Message
- */
-function facture_meta_create($db, $facid, $message="")
-{
-	global $langs,$conf;
-
-	$fac = new Facture($db);
-	$fac->fetch($facid);
-	$fac->fetch_thirdparty();
-
-	if ($conf->facture->dir_output)
-	{
-		$facref = dol_sanitizeFileName($fac->ref);
-		$dir = $conf->facture->dir_output . "/" . $facref ;
-		$file = $dir . "/" . $facref . ".meta";
-
-		if (! is_dir($dir))
-		{
-			create_exdir($dir);
-		}
-
-		if (is_dir($dir))
-		{
-			$nblignes = count($fac->lines);
-			$client = $fac->client->nom . " " . $fac->client->address . " " . $fac->client->cp . " " . $fac->client->ville;
-			$meta = "REFERENCE=\"" . $fac->ref . "\"
-			DATE=\"" . dol_print_date($fac->date,'') . "\"
-			NB_ITEMS=\"" . $nblignes . "\"
-			CLIENT=\"" . $client . "\"
-			TOTAL_HT=\"" . $fac->total_ht . "\"
-			TOTAL_TTC=\"" . $fac->total_ttc . "\"\n";
-
-			for ($i = 0 ; $i < $nblignes ; $i++)
-			{
-				//Pour les articles
-				$meta .= "ITEM_" . $i . "_QUANTITY=\"" . $fac->lines[$i]->qty . "\"
-				ITEM_" . $i . "_UNIT_PRICE=\"" . $fac->lines[$i]->price . "\"
-				ITEM_" . $i . "_TVA=\"" .$fac->lines[$i]->tva_tx . "\"
-				ITEM_" . $i . "_DESCRIPTION=\"" . str_replace("\r\n","",nl2br($fac->lines[$i]->desc)) . "\"
-				";
-			}
-		}
-		$fp = fopen($file,"w");
-		fputs($fp,$meta);
-		fclose($fp);
-		if (! empty($conf->global->MAIN_UMASK))
-		@chmod($file, octdec($conf->global->MAIN_UMASK));
-	}
-}
-
-
-/**
- *	Supprime l'image de previsualitation, pour le cas de regeneration de facture
- *
- *	@param	   db  		objet base de donnee
- *	@param	   facid	id de la facture a creer
- */
-function facture_delete_preview($db, $facid)
-{
-	global $langs,$conf;
-    require_once(DOL_DOCUMENT_ROOT."/core/lib/files.lib.php");
-
-	$fac = new Facture($db);
-	$fac->fetch($facid);
-
-	if ($conf->facture->dir_output)
-	{
-		$facref = dol_sanitizeFileName($fac->ref);
-		$dir = $conf->facture->dir_output . "/" . $facref ;
-		$file = $dir . "/" . $facref . ".pdf.png";
-
-		if ( file_exists( $file ) && is_writable( $file ) )
-		{
-			if ( ! dol_delete_file($file,1) )
-			{
-				return 0;
-			}
-		}
-	}
-
-	return 1;
-}
-
 ?>
\ No newline at end of file
diff --git a/htdocs/core/modules/fichinter/modules_fichinter.php b/htdocs/core/modules/fichinter/modules_fichinter.php
index a7b4617f000..3fd79795420 100644
--- a/htdocs/core/modules/fichinter/modules_fichinter.php
+++ b/htdocs/core/modules/fichinter/modules_fichinter.php
@@ -197,57 +197,4 @@ function fichinter_create($db, $object, $modele='', $outputlangs='')
 	}
 }
 
-/**
- * 	Deletes the image preview, in case of regeneration
- * 	@param	  db			database object
- * 	@param	  fichinterid	id to delete
- * 	@param    fichinterref	reference if needed
- */
-function fichinter_delete_preview($db, $fichinterid, $fichinterref='')
-{
-	global $langs,$conf;
-    require_once(DOL_DOCUMENT_ROOT."/core/lib/files.lib.php");
-
-	if (!$fichinterref)
-	{
-		$fichinter = new Fichinter($db);
-		$fichinter->fetch($fichinterid);
-		$fichinterref = $fichinter->ref;
-	}
-
-	if ($conf->ficheinter->dir_output)
-	{
-		$fichinterref = dol_sanitizeFileName($fichinterref);
-		$dir = $conf->ficheinter->dir_output . "/" . $fichinterref ;
-		$file = $dir . "/" . $fichinterref . ".pdf.png";
-		$multiple = $file . ".";
-
-		if ( file_exists( $file ) && is_writable( $file ) )
-		{
-			if ( ! dol_delete_file($file,1) )
-			{
-				$this->error=$langs->trans("ErrorFailedToOpenFile",$file);
-				return 0;
-			}
-		}
-		else
-		{
-			for ($i = 0; $i < 20; $i++)
-			{
-				$preview = $multiple.$i;
-				if ( file_exists( $preview ) && is_writable( $preview ) )
-				{
-					if ( ! dol_delete_file($preview,1) )
-					{
-						$this->error=$langs->trans("ErrorFailedToOpenFile",$preview);
-						return 0;
-					}
-				}
-			}
-		}
-	}
-
-	return 1;
-}
-
 ?>
\ No newline at end of file
diff --git a/htdocs/core/modules/livraison/modules_livraison.php b/htdocs/core/modules/livraison/modules_livraison.php
index ff3009c9d06..1fa7e17b7ae 100644
--- a/htdocs/core/modules/livraison/modules_livraison.php
+++ b/htdocs/core/modules/livraison/modules_livraison.php
@@ -172,10 +172,11 @@ function delivery_order_pdf_create($db, $object, $model='', $outputlangs='')
 		$sav_charset_output=$outputlangs->charset_output;
 		if ($obj->write_file($object,$outputlangs) > 0)
 		{
-			// on supprime l'image correspondant au preview
-			delivery_order_delete_preview($db, $object->id);
-
 			$outputlangs->charset_output=$sav_charset_output;
+
+			// we delete preview files
+        	require_once(DOL_DOCUMENT_ROOT."/core/lib/files.lib.php");
+			dol_delete_preview($object);
 			return 1;
 		}
 		else
@@ -193,33 +194,4 @@ function delivery_order_pdf_create($db, $object, $model='', $outputlangs='')
 	}
 }
 
-
-function delivery_order_delete_preview($db, $deliveryid)
-{
-	global $langs,$conf;
-    require_once(DOL_DOCUMENT_ROOT."/core/lib/files.lib.php");
-
-	$delivery = new Livraison($db,"",$deliveryid);
-	$delivery->fetch($deliveryid);
-	$client = new Societe($db);
-	$client->fetch($delivery->socid);
-
-	if ($conf->livraison->dir_output)
-	{
-		$deliveryref = dol_sanitizeFileName($delivery->ref);
-		$dir = $conf->livraison->dir_output . "/" . $deliveryref ;
-		$file = $dir . "/" . $deliveryref . ".pdf.png";
-
-		if ( file_exists( $file ) && is_writable( $file ) )
-		{
-			if ( ! dol_delete_file($file,1) )
-			{
-				$this->error=$langs->trans("ErrorFailedToOpenFile",$file);
-				return 0;
-			}
-		}
-	}
-
-	return 1;
-}
 ?>
diff --git a/htdocs/core/modules/project/modules_project.php b/htdocs/core/modules/project/modules_project.php
index a61b6301931..412b18af406 100644
--- a/htdocs/core/modules/project/modules_project.php
+++ b/htdocs/core/modules/project/modules_project.php
@@ -174,10 +174,11 @@ function project_pdf_create($db, $object, $model,$outputlangs)
 		$sav_charset_output=$outputlangs->charset_output;
 		if ($obj->write_file($object,$outputlangs) > 0)
 		{
-			// on supprime l'image correspondant au preview
-			project_delete_preview($db, $object->id);
-
 			$outputlangs->charset_output=$sav_charset_output;
+
+			// we delete preview files
+        	require_once(DOL_DOCUMENT_ROOT."/core/lib/files.lib.php");
+			dol_delete_preview($object);
 			return 1;
 		}
 		else
@@ -195,39 +196,4 @@ function project_pdf_create($db, $object, $model,$outputlangs)
 	}
 }
 
-/**
- * Enter description here...
- *
- * @param   $db
- * @param   $objectid
- * @return  int
- */
-function project_delete_preview($db, $objectid)
-{
-	global $langs,$conf;
-    require_once(DOL_DOCUMENT_ROOT."/core/lib/files.lib.php");
-
-	$project = new Project($db);
-	$project->fetch($objectid);
-	$client = new Societe($db);
-	$client->fetch($project->socid);
-
-	if ($conf->projet->dir_output.'/commande')
-	{
-		$projectRef = dol_sanitizeFileName($project->ref);
-		$dir = $conf->projet->dir_output . "/" . $projectRef ;
-		$file = $dir . "/" . $projectRef . ".pdf.png";
-
-		if ( file_exists( $file ) && is_writable( $file ) )
-		{
-			if ( ! dol_delete_file($file) )
-			{
-				$this->error=$langs->trans("ErrorFailedToOpenFile",$file);
-				return 0;
-			}
-		}
-	}
-
-	return 1;
-}
 ?>
diff --git a/htdocs/core/modules/propale/modules_propale.php b/htdocs/core/modules/propale/modules_propale.php
index 10480c1d3d9..f726b63727e 100644
--- a/htdocs/core/modules/propale/modules_propale.php
+++ b/htdocs/core/modules/propale/modules_propale.php
@@ -205,8 +205,10 @@ function propale_pdf_create($db, $object, $modele, $outputlangs, $hidedetails=0,
 		if ($obj->write_file($object, $outputlangs, $srctemplatepath, $hidedetails, $hidedesc, $hideref, $hookmanager) > 0)
 		{
 			$outputlangs->charset_output=$sav_charset_output;
-			// on supprime l'image correspondant au preview
-			propale_delete_preview($db, $object->id);
+
+			// we delete preview files
+        	require_once(DOL_DOCUMENT_ROOT."/core/lib/files.lib.php");
+			dol_delete_preview($object);
 
 			// Appel des triggers
 			include_once(DOL_DOCUMENT_ROOT . "/core/class/interfaces.class.php");
@@ -239,57 +241,4 @@ function propale_pdf_create($db, $object, $modele, $outputlangs, $hidedetails=0,
 	}
 }
 
-/**
- *  Delete preview files
- * 	@param	    db  		objet base de donnee
- * 	@param	    propalid	id de la propal a effacer
- * 	@param      propalref   reference de la propal si besoin
- */
-function propale_delete_preview($db, $propalid, $propalref='')
-{
-	global $langs,$conf;
-    require_once(DOL_DOCUMENT_ROOT."/core/lib/files.lib.php");
-
-	if (!$propalref)
-	{
-		$propal = new Propal($db,"",$propalid);
-		$propal->fetch($propalid);
-		$propalref = $propal->ref;
-	}
-
-	if ($conf->propale->dir_output)
-	{
-		$propalref = dol_sanitizeFileName($propalref);
-		$dir = $conf->propale->dir_output . "/" . $propalref ;
-		$file = $dir . "/" . $propalref . ".pdf.png";
-		$multiple = $file . ".";
-
-		if ( file_exists( $file ) && is_writable( $file ) )
-		{
-			if ( ! dol_delete_file($file,1) )
-			{
-				$this->error=$langs->trans("ErrorFailedToOpenFile",$file);
-				return 0;
-			}
-		}
-		else
-		{
-			for ($i = 0; $i < 20; $i++)
-			{
-				$preview = $multiple.$i;
-
-				if ( file_exists( $preview ) && is_writable( $preview ) )
-				{
-					if ( ! unlink($preview) )
-					{
-						$this->error=$langs->trans("ErrorFailedToOpenFile",$preview);
-						return 0;
-					}
-				}
-			}
-		}
-	}
-
-	return 1;
-}
 ?>
diff --git a/htdocs/core/modules/supplier_invoice/modules_facturefournisseur.php b/htdocs/core/modules/supplier_invoice/modules_facturefournisseur.php
index aab5c6b2d9e..a45a2d8b958 100755
--- a/htdocs/core/modules/supplier_invoice/modules_facturefournisseur.php
+++ b/htdocs/core/modules/supplier_invoice/modules_facturefournisseur.php
@@ -98,10 +98,11 @@ function supplier_invoice_pdf_create($db, $object, $model, $outputlangs)
 		$sav_charset_output=$outputlangs->charset_output;
 		if ($obj->write_file($object,$outputlangs) > 0)
 		{
-			// on supprime l'image correspondant au preview
-			supplier_invoice_delete_preview($db, $object->id);
-
 			$outputlangs->charset_output=$sav_charset_output;
+
+			// we delete preview files
+        	require_once(DOL_DOCUMENT_ROOT."/core/lib/files.lib.php");
+			dol_delete_preview($object);
 			return 1;
 		}
 		else
@@ -119,38 +120,4 @@ function supplier_invoice_pdf_create($db, $object, $model, $outputlangs)
 	}
 }
 
-/**
- * Delete preview files
- * @param   $db
- * @param   $objectid
- * @return  int
- */
-function supplier_invoice_delete_preview($db, $objectid)
-{
-	global $langs,$conf;
-    require_once(DOL_DOCUMENT_ROOT."/core/lib/files.lib.php");
-
-	$comfourn = new FactureFournisseur($db);
-	$comfourn->fetch($objectid);
-	$client = new Societe($db);
-	$client->fetch($comfourn->socid);
-
-	if ($conf->fournisseur->dir_output.'/facture')
-	{
-		$comfournref = dol_sanitizeFileName($comfourn->ref);
-		$dir = $conf->facture->dir_output . "/" . $comfournref ;
-		$file = $dir . "/" . $comfournref . ".pdf.png";
-
-		if ( file_exists( $file ) && is_writable( $file ) )
-		{
-			if ( ! dol_delete_file($file) )
-			{
-				$this->error=$langs->trans("ErrorFailedToOpenFile",$file);
-				return 0;
-			}
-		}
-	}
-
-	return 1;
-}
 ?>
diff --git a/htdocs/core/modules/supplier_order/modules_commandefournisseur.php b/htdocs/core/modules/supplier_order/modules_commandefournisseur.php
index e7d06c4192a..95e0423e5db 100644
--- a/htdocs/core/modules/supplier_order/modules_commandefournisseur.php
+++ b/htdocs/core/modules/supplier_order/modules_commandefournisseur.php
@@ -199,8 +199,10 @@ function supplier_order_pdf_create($db, $object, $model, $outputlangs, $hidedeta
 		if ($obj->write_file($object, $outputlangs, $srctemplatepath, $hidedetails, $hidedesc) > 0)
 		{
 			$outputlangs->charset_output=$sav_charset_output;
-			// on supprime l'image correspondant au preview
-			supplier_order_delete_preview($db, $object->id);
+
+			// we delete preview files
+        	require_once(DOL_DOCUMENT_ROOT."/core/lib/files.lib.php");
+			dol_delete_preview($object);
 			return 1;
 		}
 		else
@@ -225,62 +227,4 @@ function supplier_order_pdf_create($db, $object, $model, $outputlangs, $hidedeta
 	}
 }
 
-/**
- * Delete preview files, pour le cas de regeneration de commande
- * @param   $db		   data base object
- * @param   $comfournid  id de la commande a effacer
- * @param   $comfournref reference de la commande si besoin
- * @return  int
- */
-function supplier_order_delete_preview($db, $comfournid, $comfournref='')
-{
-	global $langs,$conf;
-    require_once(DOL_DOCUMENT_ROOT."/core/lib/files.lib.php");
-
-	if (!$comfournref)
-	{
-		$comfourn = new CommandeFournisseur($db,"",$comfournid);
-		$comfourn->fetch($comfournid);
-		$comfournref = $comfourn->ref;
-		$soc = new Societe($db);
-		$soc->fetch($comfourn->socid);
-	}
-
-
-
-	if ($conf->fournisseur->dir_output.'/commande')
-	{
-		$suppordref = dol_sanitizeFileName($comfournref);
-		$dir = $conf->fournisseur->dir_output . "/" . $suppordref ;
-		$file = $dir . "/" . $suppordref . ".pdf.png";
-		$multiple = $file . ".";
-
-		if ( file_exists( $file ) && is_writable( $file ) )
-		{
-			if ( ! dol_delete_file($file,1) )
-			{
-				$this->error=$langs->trans("ErrorFailedToOpenFile",$file);
-				return 0;
-			}
-		}
-		else
-		{
-			for ($i = 0; $i < 20; $i++)
-			{
-				$preview = $multiple.$i;
-
-				if ( file_exists( $preview ) && is_writable( $preview ) )
-				{
-					if ( ! dol_delete_file($preview,1) )
-					{
-						$this->error=$langs->trans("ErrorFailedToOpenFile",$preview);
-						return 0;
-					}
-				}
-			}
-		}
-	}
-
-	return 1;
-}
 ?>
diff --git a/htdocs/fichinter/class/fichinter.class.php b/htdocs/fichinter/class/fichinter.class.php
index 98fcb0d37ac..212c7d84694 100644
--- a/htdocs/fichinter/class/fichinter.class.php
+++ b/htdocs/fichinter/class/fichinter.class.php
@@ -180,7 +180,7 @@ class Fichinter extends CommonObject
 		if (! dol_strlen($this->fk_project)) { $this->fk_project = 0; }
 
 		$this->db->begin();
-		
+
 		$sql = "UPDATE ".MAIN_DB_PREFIX."fichinter SET ";
 		$sql.= ", description  = '".$this->db->escape($this->description)."'";
 		$sql.= ", duree = ".$this->duree;
@@ -617,7 +617,7 @@ class Fichinter extends CommonObject
 					$file = $conf->ficheinter->dir_output . "/" . $fichinterref . "/" . $fichinterref . ".pdf";
 					if (file_exists($file))
 					{
-						fichinter_delete_preview($this->db, $this->id, $this->ref);
+						dol_delete_preview($this);
 
 						if (!dol_delete_file($file))
 						{
diff --git a/htdocs/projet/class/project.class.php b/htdocs/projet/class/project.class.php
index b511ac8418b..bd3132a322c 100644
--- a/htdocs/projet/class/project.class.php
+++ b/htdocs/projet/class/project.class.php
@@ -438,7 +438,7 @@ class Project extends CommonObject
                 $file = $conf->projet->dir_output . "/" . $projectref . "/" . $projectref . ".pdf";
                 if (file_exists($file))
                 {
-                    //project_delete_preview($this->db, $this->id, $this->ref);
+                    dol_delete_preview($this);
 
                     if (!dol_delete_file($file))
                     {