diff --git a/htdocs/adherents/card_subscriptions.php b/htdocs/adherents/card_subscriptions.php
index e436fd5f694..fa7d59f040e 100644
--- a/htdocs/adherents/card_subscriptions.php
+++ b/htdocs/adherents/card_subscriptions.php
@@ -129,7 +129,7 @@ if ($action == 'setuserid' && ($user->rights->user->self->creer || $user->rights
         if ($_POST["userid"] != $user->id && $_POST["userid"] != $object->user_id)
         {
             $error++;
-            $mesg='<div class="error">'.$langs->trans("ErrorUserPermissionAllowsToLinksToItselfOnly").'</div>';
+            setEventMessage($langs->trans("ErrorUserPermissionAllowsToLinksToItselfOnly"), 'errors');
         }
     }
 
@@ -165,7 +165,7 @@ if ($action == 'setsocid')
                     $thirdparty=new Societe($db);
                     $thirdparty->fetch(GETPOST('socid','int'));
                     $error++;
-                    $mesg='<div class="error">'.$langs->trans("ErrorMemberIsAlreadyLinkedToThisThirdParty",$othermember->getFullName($langs),$othermember->login,$thirdparty->name).'</div>';
+	                setEventMessage($langs->trans("ErrorMemberIsAlreadyLinkedToThisThirdParty",$othermember->getFullName($langs),$othermember->login,$thirdparty->name), 'errors');
                 }
             }
 
diff --git a/htdocs/adherents/fiche.php b/htdocs/adherents/fiche.php
index e57e2b9eb1c..49eabe52d43 100644
--- a/htdocs/adherents/fiche.php
+++ b/htdocs/adherents/fiche.php
@@ -81,8 +81,6 @@ if (! empty($canvas))
 // Security check
 $result=restrictedArea($user,'adherent',$rowid,'','','fk_soc', 'rowid', $objcanvas);
 
-$errmsg=''; $errmsgs=array();
-
 if ($rowid > 0)
 {
 	// Load member
@@ -128,7 +126,7 @@ if ($action == 'setuserid' && ($user->rights->user->self->creer || $user->rights
 		if ($userid != $user->id && $userid != $object->user_id)
 		{
 			$error++;
-			$mesg='<div class="error">'.$langs->trans("ErrorUserPermissionAllowsToLinksToItselfOnly").'</div>';
+			setEventMessage($langs->trans("ErrorUserPermissionAllowsToLinksToItselfOnly"), 'errors');
 		}
 	}
 
@@ -164,7 +162,7 @@ if ($action == 'setsocid')
 					$thirdparty=new Societe($db);
 					$thirdparty->fetch($socid);
 					$error++;
-					$errmsg='<div class="error">'.$langs->trans("ErrorMemberIsAlreadyLinkedToThisThirdParty",$othermember->getFullName($langs),$othermember->login,$thirdparty->name).'</div>';
+					setEventMessage($langs->trans("ErrorMemberIsAlreadyLinkedToThisThirdParty",$othermember->getFullName($langs),$othermember->login,$thirdparty->name), 'errors');
 				}
 			}
 
@@ -190,12 +188,12 @@ if ($action == 'confirm_create_user' && $confirm == 'yes' && $user->rights->user
 		if ($result < 0)
 		{
 			$langs->load("errors");
-			$errmsg=$langs->trans($nuser->error);
+			setEventMessage($langs->trans($nuser->error), 'errors');
 		}
 	}
 	else
 	{
-		$errmsg=$object->error;
+		setEventMessage($object->error, 'errors');
 	}
 }
 
@@ -211,13 +209,13 @@ if ($action == 'confirm_create_thirdparty' && $confirm == 'yes' && $user->rights
 		if ($result < 0)
 		{
 			$langs->load("errors");
-			$errmsg=$langs->trans($company->error);
-			$errmsgs=$company->errors;
+			setEventMessage($langs->trans($company->error), 'errors');
+			setEventMessage($company->errors, 'errors');
 		}
 	}
 	else
 	{
-		$errmsg=$object->error;
+		setEventMessage($object->error, 'errors');
 	}
 }
 
@@ -231,7 +229,7 @@ if ($action == 'confirm_sendinfo' && $confirm == 'yes')
 		$result=$object->send_an_email($langs->transnoentitiesnoconv("ThisIsContentOfYourCard")."\n\n%INFOS%\n\n",$langs->transnoentitiesnoconv("CardContent"));
 
 		$langs->load("mails");
-		$mesg=$langs->trans("MailSuccessfulySent", $from, $object->email);
+		setEventMessage($langs->trans("MailSuccessfulySent", $from, $object->email));
 	}
 }
 
@@ -252,12 +250,12 @@ if ($action == 'update' && ! $_POST["cancel"] && $user->rights->adherent->creer)
 	if ($morphy != 'mor' && empty($lastname)) {
 		$error++;
 		$langs->load("errors");
-		$errmsg .= $langs->trans("ErrorFieldRequired",$langs->transnoentities("Lastname"))."<br>\n";
+		setEventMessage($langs->trans("ErrorFieldRequired",$langs->transnoentities("Lastname")), 'errors');
 	}
 	if ($morphy != 'mor' && (!isset($firstname) || $firstname=='')) {
 		$error++;
 		$langs->load("errors");
-		$errmsg .= $langs->trans("ErrorFieldRequired",$langs->transnoentities("Firstname"))."<br>\n";
+		setEventMessage($langs->trans("ErrorFieldRequired",$langs->transnoentities("Firstname")), 'errors');
 	}
 
 	// Create new object
@@ -343,7 +341,7 @@ if ($action == 'update' && ! $_POST["cancel"] && $user->rights->adherent->creer)
 						$newfile=$dir.'/'.dol_sanitizeFileName($_FILES['photo']['name']);
 						if (! dol_move_uploaded_file($_FILES['photo']['tmp_name'],$newfile,1,0,$_FILES['photo']['error']) > 0)
 						{
-							$message .= '<div class="error">'.$langs->trans("ErrorFailedToSaveFile").'</div>';
+							setEventMessage($langs->trans("ErrorFailedToSaveFile"), 'errors');
 						}
 						else
 						{
@@ -359,7 +357,7 @@ if ($action == 'update' && ! $_POST["cancel"] && $user->rights->adherent->creer)
 				}
 				else
 				{
-					$errmsgs[] = "ErrorBadImageFormat";
+					setEventMessage("ErrorBadImageFormat", 'errors');
 				}
 			}
 			else
@@ -387,8 +385,11 @@ if ($action == 'update' && ! $_POST["cancel"] && $user->rights->adherent->creer)
 		}
 		else
 		{
-			if ($object->error) $errmsg=$object->error;
-			else $errmsgs=$object->errors;
+			if ($object->error) {
+				setEventMessage($object->error, 'errors');
+			} else {
+				setEventMessage($object->errors, 'errors');
+			}
 			$action='';
 		}
 	}
@@ -472,14 +473,14 @@ if ($action == 'add' && $user->rights->adherent->creer)
 	// Check parameters
 	if (empty($morphy) || $morphy == "-1") {
 		$error++;
-		$errmsg .= $langs->trans("ErrorFieldRequired",$langs->transnoentitiesnoconv("Nature"))."<br>\n";
+		setEventMessage($langs->trans("ErrorFieldRequired",$langs->transnoentitiesnoconv("Nature")), 'errors');
 	}
 	// Test si le login existe deja
 	if (empty($conf->global->ADHERENT_LOGIN_NOT_REQUIRED))
 	{
 		if (empty($login)) {
 			$error++;
-			$errmsg .= $langs->trans("ErrorFieldRequired",$langs->trans("Login"))."<br>\n";
+			setEventMessage($langs->trans("ErrorFieldRequired",$langs->trans("Login")), 'errors');
 		}
 		else {
 			$sql = "SELECT login FROM ".MAIN_DB_PREFIX."adherent WHERE login='".$db->escape($login)."'";
@@ -490,32 +491,32 @@ if ($action == 'add' && $user->rights->adherent->creer)
 			if ($num) {
 				$error++;
 				$langs->load("errors");
-				$errmsg .= $langs->trans("ErrorLoginAlreadyExists",$login)."<br>\n";
+				setEventMessage($langs->trans("ErrorLoginAlreadyExists",$login), 'errors');
 			}
 		}
 		if (empty($pass)) {
 			$error++;
-			$errmsg .= $langs->trans("ErrorFieldRequired",$langs->transnoentities("Password"))."<br>\n";
+			setEventMessage($langs->trans("ErrorFieldRequired",$langs->transnoentities("Password")), 'errors');
 		}
 	}
 	if ($morphy != 'mor' && empty($lastname)) {
 		$error++;
 		$langs->load("errors");
-		$errmsg .= $langs->trans("ErrorFieldRequired",$langs->transnoentities("Lastname"))."<br>\n";
+		setEventMessage($langs->trans("ErrorFieldRequired",$langs->transnoentities("Lastname")), 'errors');
 	}
 	if ($morphy != 'mor' && (!isset($firstname) || $firstname=='')) {
 		$error++;
 		$langs->load("errors");
-		$errmsg .= $langs->trans("ErrorFieldRequired",$langs->transnoentities("Firstname"))."<br>\n";
+		setEventMessage($langs->trans("ErrorFieldRequired",$langs->transnoentities("Firstname")), 'errors');
 	}
 	if (! ($typeid > 0)) {	// Keep () before !
 		$error++;
-		$errmsg .= $langs->trans("ErrorFieldRequired",$langs->transnoentitiesnoconv("Type"))."<br>\n";
+		setEventMessage($langs->trans("ErrorFieldRequired",$langs->transnoentitiesnoconv("Type")), 'errors');
 	}
 	if ($conf->global->ADHERENT_MAIL_REQUIRED && ! isValidEMail($email)) {
 		$error++;
 		$langs->load("errors");
-		$errmsg .= $langs->trans("ErrorBadEMail",$email)."<br>\n";
+		setEventMessage($langs->trans("ErrorBadEMail",$email), 'errors');
 	}
 	$public=0;
 	if (isset($public)) $public=1;
@@ -536,8 +537,11 @@ if ($action == 'add' && $user->rights->adherent->creer)
 		{
 			$db->rollback();
 
-			if ($object->error) $errmsg=$object->error;
-			else $errmsgs=$object->errors;
+			if ($object->error) {
+				setEventMessage($object->error, 'errors');
+			} else {
+				setEventMessage($object->errors, 'errors');
+			}
 
 			$action = 'create';
 		}
@@ -589,15 +593,18 @@ if ($user->rights->adherent->creer && $action == 'confirm_valid' && $confirm ==
 			if ($result < 0)
 			{
 				$error++;
-				$errmsg.=$object->error;
+				setEventMessage($object->error, 'errors');
 			}
 		}
 	}
 	else
 	{
 		$error++;
-		if ($object->error) $errmsg=$object->error;
-		else $errmsgs=$object->errors;
+		if ($object->error) {
+			setEventMessage($object->error, 'errors');
+		} else {
+			setEventMessage($object->errors, 'errors');
+		}
 	}
 
 	if (! $error)
@@ -613,6 +620,8 @@ if ($user->rights->adherent->creer && $action == 'confirm_valid' && $confirm ==
 
 if ($user->rights->adherent->supprimer && $action == 'confirm_resign')
 {
+	$error = 0;
+
 	if ($confirm == 'yes')
 	{
 		$adht = new AdherentType($db);
@@ -628,17 +637,23 @@ if ($user->rights->adherent->supprimer && $action == 'confirm_resign')
 			}
 			if ($result < 0)
 			{
-				$errmsg.=$object->error;
+				$error++;
+				setEventMessage($object->error, 'errors');
 			}
 		}
 		else
 		{
-			if ($object->error) $errmsg=$object->error;
-			else $errmsgs=$object->errors;
+			$error++;
+
+			if ($object->error) {
+				setEventMessage($object->error, 'errors');
+			} else {
+				setEventMessage($object->errors, 'errors');
+			}
 			$action='';
 		}
 	}
-	if (! empty($backtopage) && ! $errmsg)
+	if (! empty($backtopage) && ! $error)
 	{
 		header("Location: ".$backtopage);
 		exit;
@@ -652,7 +667,7 @@ if ($user->rights->adherent->supprimer && $action == 'confirm_del_spip' && $conf
 	{
 		if (!$mailmanspip->del_to_spip($object))
 		{
-			$errmsg.= $langs->trans('DeleteIntoSpipError').': '.$mailmanspip->error."<BR>\n";
+			setEventMessage($langs->trans('DeleteIntoSpipError').': '.$mailmanspip->error, 'errors');
 		}
 	}
 }
@@ -663,7 +678,7 @@ if ($user->rights->adherent->creer && $action == 'confirm_add_spip' && $confirm
 	{
 		if (!$mailmanspip->add_to_spip($object))
 		{
-			$errmsg.= $langs->trans('AddIntoSpipError').': '.$mailmanspip->error."<BR>\n";
+			setEventMessage($langs->trans('AddIntoSpipError').': '.$mailmanspip->error, 'errors');
 		}
 	}
 }
@@ -725,9 +740,6 @@ else
 
 		print_fiche_titre($langs->trans("NewMember"));
 
-		dol_htmloutput_mesg($errmsg,$errmsgs,'error');
-		dol_htmloutput_mesg($mesg,$mesgs);
-
 		if ($conf->use_javascript_ajax)
 		{
 			print "\n".'<script type="text/javascript" language="javascript">';
@@ -952,9 +964,6 @@ else
 
 		dol_fiche_head($head, 'general', $langs->trans("Member"), 0, 'user');
 
-		dol_htmloutput_errors($errmsg,$errmsgs);
-		dol_htmloutput_mesg($mesg);
-
 		if ($conf->use_javascript_ajax)
 		{
 			print "\n".'<script type="text/javascript" language="javascript">';
@@ -1168,8 +1177,6 @@ else
 
 	if ($rowid && $action != 'edit')
 	{
-		dol_htmloutput_mesg($mesg);
-
 		/* ************************************************************************** */
 		/*                                                                            */
 		/* Mode affichage                                                             */
@@ -1199,8 +1206,6 @@ else
 
 		dol_fiche_head($head, 'general', $langs->trans("Member"), 0, 'user');
 
-		dol_htmloutput_errors($errmsg,$errmsgs);
-
 		// Confirm create user
 		if ($action == 'create_user')
 		{
diff --git a/htdocs/adherents/fiche_subscription.php b/htdocs/adherents/fiche_subscription.php
index 950ff888612..01a3ccc83fc 100644
--- a/htdocs/adherents/fiche_subscription.php
+++ b/htdocs/adherents/fiche_subscription.php
@@ -282,8 +282,6 @@ if ($rowid && $action != 'edit')
 
 	dol_fiche_head($head, 'general', $langs->trans("Subscription"), '', 'payment');
 
-	if ($msg) print '<div class="error">'.$msg.'</div>';
-
     // Confirmation to delete subscription
     if ($action == 'delete')
     {
diff --git a/htdocs/adherents/type.php b/htdocs/adherents/type.php
index fafc7941aed..7dc0a43ac26 100644
--- a/htdocs/adherents/type.php
+++ b/htdocs/adherents/type.php
@@ -237,8 +237,6 @@ if ($action == 'create')
 
 	print_fiche_titre($langs->trans("NewMemberType"));
 
-	if ($mesg) print '<div class="error">'.$mesg.'</div>';
-
 	print '<form action="'.$_SERVER['PHP_SELF'].'" method="POST">';
 	print '<input type="hidden" name="token" value="'.$_SESSION['newtoken'].'">';
 	print '<table class="border" width="100%">';
diff --git a/htdocs/admin/fiscalyear_card.php b/htdocs/admin/fiscalyear_card.php
index 81860a07ae1..b30cf2a69fc 100644
--- a/htdocs/admin/fiscalyear_card.php
+++ b/htdocs/admin/fiscalyear_card.php
@@ -46,8 +46,6 @@ static $tmpstatut2label=array(
 $statut2label=array('');
 foreach ($tmpstatut2label as $key => $val) $statut2label[$key]=$langs->trans($val);
 
-$mesg = '';
-
 $object = new Fiscalyear($db);
 
 $date_start=dol_mktime(0,0,0,GETPOST('fiscalyearmonth','int'),GETPOST('fiscalyearday','int'),GETPOST('fiscalyearyear','int'));
@@ -67,7 +65,7 @@ if ($action == 'confirm_delete' && $confirm == "yes")
     }
     else
     {
-        $mesg=$object->error;
+        setEventMessage($object->error, 'errors');
     }
 }
 
@@ -87,12 +85,12 @@ else if ($action == 'add')
 
         if (empty($object->date_start) && empty($object->date_end))
         {
-            $mesg.=$langs->trans("ErrorFieldRequired",$langs->transnoentitiesnoconv("Date"));
+	        setEventMessage($langs->trans("ErrorFieldRequired",$langs->transnoentitiesnoconv("Date")), 'errors');
             $error++;
         }
         if (empty($object->label))
         {
-            $mesg='<div class="error">'.$langs->trans("ErrorFieldRequired",$langs->transnoentitiesnoconv("Label")).'</div>';
+	        setEventMessage($langs->trans("ErrorFieldRequired",$langs->transnoentitiesnoconv("Label")), 'errors');
             $error++;
         }
 
@@ -107,7 +105,7 @@ else if ($action == 'add')
             }
             else
             {
-                $mesg=$object->error;
+	            setEventMessage($object->error, 'errors');
                 $action='create';
             }
         }
@@ -144,7 +142,7 @@ else if ($action == 'update')
         }
         else
         {
-            $mesg=$object->error;
+	        setEventMessage($object->error, 'errors');
         }
     }
     else
@@ -169,8 +167,6 @@ if ($action == 'create')
 {
     print_fiche_titre($langs->trans("NewFiscalYear"));
 
-    dol_htmloutput_errors($mesg);
-
     print '<form action="'.$_SERVER["PHP_SELF"].'" method="POST">';
     print '<input type="hidden" name="token" value="'.$_SESSION['newtoken'].'">';
     print '<input type="hidden" name="action" value="add">';
@@ -209,8 +205,6 @@ else if ($id)
     $result = $object->fetch($id);
     if ($result > 0)
     {
-        dol_htmloutput_mesg($mesg);
-
         $head = fiscalyear_prepare_head($object);
 
         dol_fiche_head($head, 'card', $langs->trans("FiscalYearCard"), 0, 'cron');
diff --git a/htdocs/admin/ldap_users.php b/htdocs/admin/ldap_users.php
index 386bc19ff73..32e5310a201 100644
--- a/htdocs/admin/ldap_users.php
+++ b/htdocs/admin/ldap_users.php
@@ -427,7 +427,7 @@ if (function_exists("ldap_connect"))
             }
             else
            {
-                $mesg='<div class="error">'.$ldap->error.'</div>';
+                setEventMessage($ldap->error, 'errors');
             }
 
 			print "<br>\n";
diff --git a/htdocs/admin/limits.php b/htdocs/admin/limits.php
index 69237fe4f74..26f6c08aee9 100644
--- a/htdocs/admin/limits.php
+++ b/htdocs/admin/limits.php
@@ -43,7 +43,7 @@ if ($action == 'update')
     || $_POST["MAIN_MAX_DECIMALS_SHOWN"] > $MAXDEC)
     {
         $error++;
-        $mesg='<div class="error">'.$langs->trans("ErrorDecimalLargerThanAreForbidden",$MAXDEC).'</div>';
+	    setEventMessage($langs->trans("ErrorDecimalLargerThanAreForbidden",$MAXDEC), 'errors');
     }
 
     if ($_POST["MAIN_MAX_DECIMALS_UNIT"]  < 0
@@ -52,7 +52,7 @@ if ($action == 'update')
     {
         $langs->load("errors");
         $error++;
-        $mesg='<div class="error">'.$langs->trans("ErrorNegativeValueNotAllowed").'</div>';
+	    setEventMessage($langs->trans("ErrorNegativeValueNotAllowed"), 'errors');
     }
 
     if ($_POST["MAIN_ROUNDING_RULE_TOT"])
@@ -61,7 +61,7 @@ if ($action == 'update')
         {
             $langs->load("errors");
             $error++;
-            $mesg='<div class="error">'.$langs->trans("ErrorMAIN_ROUNDING_RULE_TOTCanMAIN_MAX_DECIMALS_TOT").'</div>';
+	        setEventMessage($langs->trans("ErrorMAIN_ROUNDING_RULE_TOTCanMAIN_MAX_DECIMALS_TOT"), 'errors');
         }
     }
 
@@ -94,8 +94,6 @@ print_fiche_titre($langs->trans("LimitsSetup"),'','setup');
 print $langs->trans("LimitsDesc")."<br>\n";
 print "<br>\n";
 
-if ($mesg) print $mesg.'<br>';
-
 if ($action == 'edit')
 {
     print '<form method="POST" action="'.$_SERVER["PHP_SELF"].'">';
diff --git a/htdocs/admin/mails.php b/htdocs/admin/mails.php
index 78ce79c4912..61914d1a09c 100644
--- a/htdocs/admin/mails.php
+++ b/htdocs/admin/mails.php
@@ -653,9 +653,13 @@ else
 		if ($result) print '<div class="ok">'.$langs->trans("ServerAvailableOnIPOrPort",$server,$port).'</div>';
 		else
 		{
-			print '<div class="error">'.$langs->trans("ServerNotAvailableOnIPOrPort",$server,$port);
-			if ($mail->error) print ' - '.$mail->error;
-			print '</div>';
+			$errormsg = $langs->trans("ServerNotAvailableOnIPOrPort",$server,$port);
+
+			if ($mail->error) {
+				$errormsg .= ' - '.$mail->error;
+			}
+
+			setEventMessage($errormsg, 'errors');
 		}
 		print '<br>';
 	}
diff --git a/htdocs/admin/menus/index.php b/htdocs/admin/menus/index.php
index bade95cdcce..d6a7d151267 100644
--- a/htdocs/admin/menus/index.php
+++ b/htdocs/admin/menus/index.php
@@ -360,7 +360,7 @@ if ($conf->use_javascript_ajax)
 else
 {
 	$langs->load("errors");
-	print '<div class="error">'.$langs->trans("ErrorFeatureNeedJavascript").'</div>';
+	setEventMessage($langs->trans("ErrorFeatureNeedJavascript"), 'errors');
 }
 
 print '<br>';
diff --git a/htdocs/admin/system/index.php b/htdocs/admin/system/index.php
index 70464aa1578..a9d6cfa1afb 100644
--- a/htdocs/admin/system/index.php
+++ b/htdocs/admin/system/index.php
@@ -95,11 +95,10 @@ if ($db->type == 'pgsql')
 {
 	// Check option standard_conforming_strings is on
 	$paramarray=$db->getServerParametersValues('standard_conforming_strings');
-	if ($paramarray['standard_conforming_strings'] != 'on' && $paramarray['standard_conforming_strings'] != 1)
-	{
-		$langs->load("errors");
-		//print '<div class="error">'.$langs->trans("ErrorDatabaseParameterWrong",'standard_conforming_strings','on').'</div>';
-	}
+//	if ($paramarray['standard_conforming_strings'] != 'on' && $paramarray['standard_conforming_strings'] != 1)
+//	{
+//		$langs->load("errors");
+//	}
 }
 print '<br>';
 
diff --git a/htdocs/admin/tools/update.php b/htdocs/admin/tools/update.php
index 15d5b5f3d52..18a55168191 100644
--- a/htdocs/admin/tools/update.php
+++ b/htdocs/admin/tools/update.php
@@ -30,7 +30,9 @@ $langs->load("other");
 
 if (! $user->admin) accessforbidden();
 
-if (GETPOST('msg','alpha')) $message='<div class="error">'.GETPOST('msg','alpha').'</div>';
+if (GETPOST('msg','alpha')) {
+	setEventMessage(GETPOST('msg','alpha'), 'errors');
+}
 
 
 $urldolibarr='http://www.dolibarr.org/downloads/';
@@ -148,7 +150,7 @@ if (! empty($conf->global->MAIN_ONLINE_INSTALL_MODULE))
 	else
 	{
 		$message=info_admin($langs->trans("NotExistsDirect",$dirins).$langs->trans("InfDirAlt").$langs->trans("InfDirExample"));
-		print '<div class="warning">'.$message.'</div>';
+		setEventMessage($message, 'warnings');
 	}
 }
 else
diff --git a/htdocs/bookmarks/fiche.php b/htdocs/bookmarks/fiche.php
index 6167d6cd669..6a7394f6fc6 100644
--- a/htdocs/bookmarks/fiche.php
+++ b/htdocs/bookmarks/fiche.php
@@ -50,6 +50,8 @@ $backtopage=GETPOST('backtopage','alpha');
 
 if ($action == 'add' || $action == 'addproduct' || $action == 'update')
 {
+	$error = 0;
+
 	if (GETPOST("cancel"))
 	{
 		if (empty($backtopage)) $backtopage=(GETPOST("urlsource")?GETPOST("urlsource"):((! empty($url))?$url:DOL_URL_ROOT.'/bookmarks/liste.php'));
@@ -57,8 +59,6 @@ if ($action == 'add' || $action == 'addproduct' || $action == 'update')
 		exit;
 	}
 
-	$mesg='';
-
 	$bookmark=new Bookmark($db);
 	if ($action == 'update') $bookmark->fetch($_POST["id"]);
 	$bookmark->fk_user=$userid;
@@ -67,10 +67,17 @@ if ($action == 'add' || $action == 'addproduct' || $action == 'update')
 	$bookmark->target=$target;
 	$bookmark->position=$position;
 
-	if (! $title) $mesg.=($mesg?'<br>':'').$langs->trans("ErrorFieldRequired",$langs->trans("BookmarkTitle"));
-	if (! $url)   $mesg.=($mesg?'<br>':'').$langs->trans("ErrorFieldRequired",$langs->trans("UrlOrLink"));
+	if (! $title) {
+		$error++;
+		setEventMessage($langs->trans("ErrorFieldRequired",$langs->trans("BookmarkTitle")), 'errors');
+	}
 
-	if (! $mesg)
+	if (! $url) {
+		$error++;
+		setEventMessage($langs->trans("ErrorFieldRequired",$langs->trans("UrlOrLink")), 'errors');
+	}
+
+	if (! $error)
 	{
 		$bookmark->favicon='none';
 
@@ -88,18 +95,17 @@ if ($action == 'add' || $action == 'addproduct' || $action == 'update')
 			if ($bookmark->errno == 'DB_ERROR_RECORD_ALREADY_EXISTS')
 			{
 				$langs->load("errors");
-				$mesg='<div class="warning">'.$langs->trans("WarningBookmarkAlreadyExists").'</div>';
+				setEventMessage($langs->trans("WarningBookmarkAlreadyExists"), 'warnings');
 			}
 			else
 			{
-				$mesg='<div class="error">'.$bookmark->error.'</div>';
+				setEventMessage($bookmark->error, 'errors');
 			}
 			$action='create';
 		}
 	}
 	else
 	{
-		$mesg='<div class="error">'.$mesg.'</div>';
 		$action='create';
 	}
 }
@@ -121,7 +127,7 @@ if ($action == 'delete')
 	}
 	else
 	{
-		$mesg='<div class="error">'.$bookmark->error.'</div>';
+		setEventMessage($bookmark->error, 'errors');
 	}
 }
 
@@ -149,8 +155,6 @@ if ($action == 'create')
 
 	dol_fiche_head($head, $hselected, $langs->trans("Bookmark"),0,'bookmark');
 	
-	dol_htmloutput_mesg($mesg);
-
 	print '<table class="border" width="100%">';
 
 	print '<tr><td width="25%" class="fieldrequired">'.$langs->trans("BookmarkTitle").'</td><td><input class="flat" name="title" size="30" value="'.$title.'"></td><td class="hideonsmartphone">'.$langs->trans("SetHereATitleForLink").'</td></tr>';
diff --git a/htdocs/bookmarks/liste.php b/htdocs/bookmarks/liste.php
index c3524ae5d43..87f98072045 100644
--- a/htdocs/bookmarks/liste.php
+++ b/htdocs/bookmarks/liste.php
@@ -58,7 +58,7 @@ if ($_GET["action"] == 'delete')
     }
     else
     {
-        $mesg='<div class="error">'.$bookmark->error.'</div>';
+        $setEventMessage($bookmark->error, 'errors');
     }
 }
 
@@ -73,8 +73,6 @@ llxHeader();
 
 print_fiche_titre($langs->trans("Bookmarks"));
 
-if ($mesg) print $mesg;
-
 $sql = "SELECT b.fk_soc as rowid, b.dateb, b.rowid as bid, b.fk_user, b.url, b.target, b.title, b.favicon, b.position,";
 $sql.= " u.login, u.lastname, u.firstname";
 $sql.= " FROM ".MAIN_DB_PREFIX."bookmark as b LEFT JOIN ".MAIN_DB_PREFIX."user as u ON b.fk_user=u.rowid";
diff --git a/htdocs/categories/traduction.php b/htdocs/categories/traduction.php
index 15e8f7f6a5f..0c154a0b72f 100644
--- a/htdocs/categories/traduction.php
+++ b/htdocs/categories/traduction.php
@@ -94,7 +94,7 @@ $cancel != $langs->trans("Cancel") &&
 	else
 	{
 		$action = 'add';
-		$mesg = '<div class="error">'.$object->error.'</div>';
+		setEventMessage($object->error, 'errors');
 	}
 }
 
@@ -127,7 +127,7 @@ $cancel != $langs->trans("Cancel") &&
 	else
 	{
 		$action = 'edit';
-		$mesg = '<div class="error">'.$object->error.'</div>';
+		setEventMessage($object->error, 'errors');
 	}
 }
 
@@ -153,10 +153,6 @@ else $title=$langs->trans("Category");
 $head = categories_prepare_head($object,$type);
 dol_fiche_head($head, 'translation', $title, 0, 'category');
 
-if (! empty($mesg)) {
-	dol_htmloutput_mesg($mesg);
-}
-
 print '<table class="border" width="100%">';
 
 // Reference
diff --git a/htdocs/categories/viewcat.php b/htdocs/categories/viewcat.php
index d0a4d2751df..898d6626539 100644
--- a/htdocs/categories/viewcat.php
+++ b/htdocs/categories/viewcat.php
@@ -32,7 +32,6 @@ require_once DOL_DOCUMENT_ROOT.'/core/class/extrafields.class.php';
 
 $langs->load("categories");
 
-$mesg = '';
 $id=GETPOST('id','int');
 $ref=GETPOST('ref');
 $type=GETPOST('type');
@@ -117,7 +116,7 @@ if ($user->rights->categorie->supprimer && $action == 'confirm_delete' && $confi
 	}
 	else
 	{
-		$mesg='<div class="error">'.$object->error.'</div>';
+		setEventMessage($object->error, 'errors');
 	}
 }
 
@@ -131,8 +130,6 @@ $form = new Form($db);
 
 llxHeader("","",$langs->trans("Categories"));
 
-dol_htmloutput_mesg($mesg);
-
 if ($type == 0) $title=$langs->trans("ProductsCategoryShort");
 elseif ($type == 1) $title=$langs->trans("SuppliersCategoryShort");
 elseif ($type == 2) $title=$langs->trans("CustomersCategoryShort");
diff --git a/htdocs/comm/action/fiche.php b/htdocs/comm/action/fiche.php
index ca17c261680..ad16cca00f6 100644
--- a/htdocs/comm/action/fiche.php
+++ b/htdocs/comm/action/fiche.php
@@ -62,7 +62,6 @@ $result = restrictedArea($user, 'agenda', $id, 'actioncomm&societe', 'myactions|
 if ($user->societe_id && $socid) $result = restrictedArea($user,'societe',$socid);
 
 $error=GETPOST("error");
-$mesg='';
 
 $cactioncomm = new CActionComm($db);
 $object = new ActionComm($db);
@@ -116,14 +115,14 @@ if ($action == 'add_action')
 	{
 		$error++;
 		$action = 'create';
-		$mesg='<div class="error">'.$langs->trans("ErrorFieldRequired",$langs->transnoentitiesnoconv("DateEnd")).'</div>';
+		setEventMessage($langs->trans("ErrorFieldRequired",$langs->transnoentitiesnoconv("DateEnd")), 'errors');
 	}
 
 	if (empty($conf->global->AGENDA_USE_EVENT_TYPE) && ! GETPOST('label'))
 	{
 		$error++;
 		$action = 'create';
-		$mesg='<div class="error">'.$langs->trans("ErrorFieldRequired",$langs->transnoentitiesnoconv("Title")).'</div>';
+		setEventMessage($langs->trans("ErrorFieldRequired",$langs->transnoentitiesnoconv("Title")), 'errors');
 	}
 
 	// Initialisation objet cactioncomm
@@ -131,7 +130,7 @@ if ($action == 'add_action')
 	{
 		$error++;
 		$action = 'create';
-		$mesg='<div class="error">'.$langs->trans("ErrorFieldRequired",$langs->transnoentitiesnoconv("Type")).'</div>';
+		setEventMessage($langs->trans("ErrorFieldRequired",$langs->transnoentitiesnoconv("Type")), 'errors');
 	}
 	else
 	{
@@ -201,14 +200,14 @@ if ($action == 'add_action')
 	{
 		$error++;
 		$action = 'create';
-		$mesg='<div class="error">'.$langs->trans("ErrorFieldRequired",$langs->transnoentitiesnoconv("DateEnd")).'</div>';
+		setEventMessage($langs->trans("ErrorFieldRequired",$langs->transnoentitiesnoconv("DateEnd")), 'errors');
 	}
 
 	if (! GETPOST('apyear') && ! GETPOST('adyear'))
 	{
 		$error++;
 		$action = 'create';
-		$mesg='<div class="error">'.$langs->trans("ErrorFieldRequired",$langs->transnoentitiesnoconv("Date")).'</div>';
+		setEventMessage($langs->trans("ErrorFieldRequired",$langs->transnoentitiesnoconv("Date")), 'errors');
 	}
 
 	// Fill array 'array_options' with data from add form
@@ -458,8 +457,6 @@ if ($action == 'create')
 	if (GETPOST("actioncode") == 'AC_RDV') print_fiche_titre($langs->trans("AddActionRendezVous"));
 	else print_fiche_titre($langs->trans("AddAnAction"));
 
-	dol_htmloutput_mesg($mesg);
-
 	print '<table class="border" width="100%">';
 
 	// Type d'action actifs
@@ -644,10 +641,6 @@ if ($id > 0)
 	{
 		dol_htmloutput_errors($error);
 	}
-	if ($mesg)
-	{
-		dol_htmloutput_mesg($mesg);
-	}
 
 	$result=$object->fetch($id);
 	$object->fetch_optionals($id,$extralabels);
diff --git a/htdocs/comm/remx.php b/htdocs/comm/remx.php
index db35db04b14..905f73e3c9b 100644
--- a/htdocs/comm/remx.php
+++ b/htdocs/comm/remx.php
@@ -65,17 +65,17 @@ if ($action == 'confirm_split' && GETPOST("confirm") == 'yes')
 	if (! $res > 0)
 	{
 		$error++;
-		$mesg='<div class="error">'.$langs->trans("ErrorFailedToLoadDiscount").'</div>';
+		setEventMessage($langs->trans("ErrorFailedToLoadDiscount"), 'errors');
 	}
 	if (! $error && price2num($_POST["amount_ttc_1"]+$_POST["amount_ttc_2"]) != $discount->amount_ttc)
 	{
 		$error++;
-		$mesg='<div class="error">'.$langs->trans("TotalOfTwoDiscountMustEqualsOriginal").'</div>';
+		setEventMessage($langs->trans("TotalOfTwoDiscountMustEqualsOriginal"), 'errors');
 	}
 	if (! $error && $discount->fk_facture_line)
 	{
 		$error++;
-		$mesg='<div class="error">'.$langs->trans("ErrorCantSplitAUsedDiscount").'</div>';
+		setEventMessage($langs->trans("ErrorCantSplitAUsedDiscount"), 'errors');
 	}
 	if (! $error)
 	{
@@ -140,7 +140,7 @@ if ($action == 'setremise')
 		$error=0;
 		if (empty($_POST["desc"]))
 		{
-			$mesg='<div class="error">'.$langs->trans("ErrorFieldRequired",$langs->trans("ReasonDiscount")).'</div>';
+			setEventMessage($langs->trans("ErrorFieldRequired",$langs->trans("ReasonDiscount")), 'errors');
 			$error++;
 		}
 
@@ -166,13 +166,13 @@ if ($action == 'setremise')
 			else
 			{
 				$error++;
-				$mesg='<div class="error">'.$soc->error.'</div>';
+				setEventMessage($soc->error, 'errors');
 			}
 		}
 	}
 	else
 	{
-		$mesg='<div class="error">'.$langs->trans("ErrorFieldFormat",$langs->trans("NewGlobalDiscount")).'</div>';
+		setEventMessage($langs->trans("ErrorFieldFormat",$langs->trans("NewGlobalDiscount")), 'errors');
 	}
 }
 
@@ -194,7 +194,7 @@ if (GETPOST("action") == 'confirm_remove' && GETPOST("confirm")=='yes')
 	}
 	else
 	{
-		$mesg='<div class="error">'.$discount->error.'</div>';
+		setEventMessage($discount->error, 'errors');
 		$db->rollback();
 	}
 }
@@ -211,8 +211,6 @@ llxHeader('',$langs->trans("GlobalDiscount"));
 
 if ($socid > 0)
 {
-	dol_htmloutput_mesg($mesg);
-
 	// On recupere les donnees societes par l'objet
 	$objsoc = new Societe($db);
 	$objsoc->id=$socid;
diff --git a/htdocs/commande/contact.php b/htdocs/commande/contact.php
index e4b30a6e60d..5a886664c17 100644
--- a/htdocs/commande/contact.php
+++ b/htdocs/commande/contact.php
@@ -69,11 +69,11 @@ if ($action == 'addcontact' && $user->rights->commande->creer)
 		if ($object->error == 'DB_ERROR_RECORD_ALREADY_EXISTS')
 		{
 			$langs->load("errors");
-			$mesg = '<div class="error">'.$langs->trans("ErrorThisContactIsAlreadyDefinedAsThisType").'</div>';
+			setEventMessage($langs->trans("ErrorThisContactIsAlreadyDefinedAsThisType"), 'errors');
 		}
 		else
 		{
-			$mesg = '<div class="error">'.$object->error.'</div>';
+			setEventMessage($object->error, 'errors');
 		}
 	}
 }
@@ -132,7 +132,6 @@ $userstatic=new User($db);
 /* Mode vue et edition                                                         */
 /*                                                                             */
 /* *************************************************************************** */
-dol_htmloutput_mesg($mesg);
 
 if ($id > 0 || ! empty($ref))
 {
diff --git a/htdocs/commande/fiche.php b/htdocs/commande/fiche.php
index 7bf3705c07d..52cc27a42ef 100644
--- a/htdocs/commande/fiche.php
+++ b/htdocs/commande/fiche.php
@@ -65,8 +65,6 @@ $lineid = GETPOST('lineid', 'int');
 $origin = GETPOST('origin', 'alpha');
 $originid = (GETPOST('originid', 'int') ? GETPOST('originid', 'int') : GETPOST('origin_id', 'int')); // For backward compatibility
 
-$mesg = GETPOST('mesg');
-
 // PDF
 $hidedetails = (GETPOST('hidedetails', 'int') ? GETPOST('hidedetails', 'int') : (! empty($conf->global->MAIN_GENERATE_DOCUMENTS_HIDE_DETAILS) ? 1 : 0));
 $hidedesc = (GETPOST('hidedesc', 'int') ? GETPOST('hidedesc', 'int') : (! empty($conf->global->MAIN_GENERATE_DOCUMENTS_HIDE_DESC) ? 1 : 0));
@@ -108,7 +106,7 @@ if ($action == 'confirm_clone' && $confirm == 'yes' && $user->rights->commande->
 {
 	if (1==0 && ! GETPOST('clone_content') && ! GETPOST('clone_receivers'))
 	{
-		$mesg='<div class="error">'.$langs->trans("NoCloneOptionsSpecified").'</div>';
+		setEventMessage($langs->trans("NoCloneOptionsSpecified"), 'errors');
 	}
 	else
 	{
@@ -201,7 +199,7 @@ else if ($action == 'add' && $user->rights->commande->creer) {
 	$datelivraison = dol_mktime(12, 0, 0, GETPOST('liv_month'), GETPOST('liv_day'), GETPOST('liv_year'));
 
 	if ($datecommande == '') {
-		$mesg = '<div class="error">' . $langs->trans('ErrorFieldRequired', $langs->transnoentities('Date')) . '</div>';
+		setEventMessage($langs->trans('ErrorFieldRequired', $langs->transnoentities('Date')), 'errors');
 		$action = 'create';
 		$error ++;
 	}
@@ -340,11 +338,11 @@ else if ($action == 'add' && $user->rights->commande->creer) {
 						if ($reshook < 0)
 							$error ++;
 					} else {
-						$mesg = $srcobject->error;
+						setEventMessage($srcobject->error, 'errors');
 						$error ++;
 					}
 				} else {
-					$mesg = $object->error;
+					setEventMessage($object->error, 'errors');
 					$error ++;
 				}
 			} else {
@@ -378,7 +376,7 @@ else if ($action == 'add' && $user->rights->commande->creer) {
 			if (GETPOST('contactidp')) {
 				$result = $object->add_contact(GETPOST('contactidp'), 'CUSTOMER', 'external');
 				if ($result < 0) {
-					$mesg = '<div class="error">' . $langs->trans("ErrorFailedToAddContact") . '</div>';
+					setEventMessage($langs->trans("ErrorFailedToAddContact"), 'errors');
 					$error ++;
 				}
 			}
@@ -395,8 +393,7 @@ else if ($action == 'add' && $user->rights->commande->creer) {
 		} else {
 			$db->rollback();
 			$action = 'create';
-			if (! $mesg)
-				$mesg = '<div class="error">' . $object->error . '</div>';
+			setEventMessage($object->error, 'errors');
 		}
 	}
 }
@@ -435,7 +432,7 @@ else if ($action == 'setdate' && $user->rights->commande->creer) {
 
 	$result = $object->set_date($user, $date);
 	if ($result < 0) {
-		$mesg = '<div class="error">' . $object->error . '</div>';
+		setEventMessage($object->error, 'errors');
 	}
 }
 
@@ -445,7 +442,7 @@ else if ($action == 'setdate_livraison' && $user->rights->commande->creer) {
 
 	$result = $object->set_date_livraison($user, $datelivraison);
 	if ($result < 0) {
-		$mesg = '<div class="error">' . $object->error . '</div>';
+		setEventMessage($object->error, 'errors');
 	}
 }
 
@@ -884,7 +881,7 @@ else if ($action == 'confirm_validate' && $confirm == 'yes' && $user->rights->co
 		if (! $idwarehouse || $idwarehouse == -1)
 		{
 			$error++;
-			$mesgs[]='<div class="error">'.$langs->trans('ErrorFieldRequired',$langs->transnoentitiesnoconv("Warehouse")).'</div>';
+			setEventMessage($langs->trans('ErrorFieldRequired',$langs->transnoentitiesnoconv("Warehouse")), 'errors');
 			$action='';
 		}
 	}
@@ -929,7 +926,7 @@ else if ($action == 'confirm_modif' && $user->rights->commande->creer) {
 		if (! $idwarehouse || $idwarehouse == -1)
 		{
 			$error++;
-			$mesgs[]='<div class="error">'.$langs->trans('ErrorFieldRequired',$langs->transnoentitiesnoconv("Warehouse")).'</div>';
+			setEventMessage($langs->trans('ErrorFieldRequired',$langs->transnoentitiesnoconv("Warehouse")), 'errors');
 			$action='';
 		}
 	}
@@ -982,7 +979,7 @@ else if ($action == 'confirm_cancel' && $confirm == 'yes' && $user->rights->comm
 		if (! $idwarehouse || $idwarehouse == -1)
 		{
 			$error++;
-			$mesgs[]='<div class="error">'.$langs->trans('ErrorFieldRequired',$langs->transnoentitiesnoconv("Warehouse")).'</div>';
+			setEventMessage($langs->trans('ErrorFieldRequired',$langs->transnoentitiesnoconv("Warehouse")), 'errors');
 			$action='';
 		}
 	}
@@ -1221,12 +1218,13 @@ if ($action == 'send' && ! GETPOST('addfile') && ! GETPOST('removedfile') && ! G
 			require_once DOL_DOCUMENT_ROOT . '/core/class/CMailFile.class.php';
 			$mailfile = new CMailFile($subject, $sendto, $from, $message, $filepath, $mimetype, $filename, $sendtocc, '', $deliveryreceipt, - 1);
 			if ($mailfile->error) {
-				$mesg = '<div class="error">' . $mailfile->error . '</div>';
+				setEventMessage($mailfile->error, 'errors');
 			} else {
 				$result = $mailfile->sendfile();
 				if ($result) {
-					$mesg = $langs->trans('MailSuccessfulySent', $mailfile->getValidAddress($from, 2), $mailfile->getValidAddress($sendto, 2)); // Must not
-					                                                                                                                      // contains "
+					//Must not contain quotes
+					$mesg = $langs->trans('MailSuccessfulySent', $mailfile->getValidAddress($from, 2), $mailfile->getValidAddress($sendto, 2));
+					setEventMessage($mesg);
 
 					$error = 0;
 
@@ -1253,19 +1251,19 @@ if ($action == 'send' && ! GETPOST('addfile') && ! GETPOST('removedfile') && ! G
 					} else {
 						// Redirect here
 						// This avoid sending mail twice if going out and then back to page
-						header('Location: ' . $_SERVER["PHP_SELF"] . '?id=' . $object->id . '&mesg=' . urlencode($mesg));
+						header('Location: ' . $_SERVER["PHP_SELF"] . '?id=' . $object->id);
 						exit();
 					}
 				} else {
 					$langs->load("other");
-					$mesg = '<div class="error">';
 					if ($mailfile->error) {
 						$mesg .= $langs->trans('ErrorFailedToSendMail', $from, $sendto);
 						$mesg .= '<br>' . $mailfile->error;
 					} else {
 						$mesg .= 'No mail sent. Feature is disabled by option MAIN_DISABLE_ALL_MAILS';
 					}
-					$mesg .= '</div>';
+
+					setEventMessage($mesg, 'errors');
 				}
 			}
 			/*            }
@@ -1278,12 +1276,12 @@ if ($action == 'send' && ! GETPOST('addfile') && ! GETPOST('removedfile') && ! G
 			}*/
 		} else {
 			$langs->load("errors");
-			$mesg = '<div class="error">' . $langs->trans('ErrorCantReadFile', $file) . '</div>';
+			setEventMessage($langs->trans('ErrorCantReadFile', $file), 'errors');
 			dol_syslog('Failed to read file: ' . $file);
 		}
 	} else {
 		$langs->load("other");
-		$mesg = '<div class="error">' . $langs->trans('ErrorFailedToReadEntity', $langs->trans("Order")) . '</div>';
+		setEventMessage($langs->trans('ErrorFailedToReadEntity', $langs->trans("Order")), 'errors');
 		dol_syslog($langs->trans('ErrorFailedToReadEntity', $langs->trans("Order")));
 	}
 }
@@ -1301,9 +1299,9 @@ if (! $error && ! empty($conf->global->MAIN_DISABLE_CONTACTS_TAB) && $user->righ
 		} else {
 			if ($object->error == 'DB_ERROR_RECORD_ALREADY_EXISTS') {
 				$langs->load("errors");
-				$mesg = '<div class="error">' . $langs->trans("ErrorThisContactIsAlreadyDefinedAsThisType") . '</div>';
+				setEventMessage($langs->trans("ErrorThisContactIsAlreadyDefinedAsThisType"), 'errors');
 			} else {
-				$mesg = '<div class="error">' . $object->error . '</div>';
+				setEventMessage($object->error, 'errors');
 			}
 		}
 	}
@@ -1350,8 +1348,6 @@ $formorder = new FormOrder($db);
 if ($action == 'create' && $user->rights->commande->creer) {
 	print_fiche_titre($langs->trans('CreateOrder'));
 
-	dol_htmloutput_mesg($mesg, $mesgs, 'error');
-
 	$soc = new Societe($db);
 	if ($socid > 0)
 		$res = $soc->fetch($socid);
@@ -1671,8 +1667,6 @@ if ($action == 'create' && $user->rights->commande->creer) {
 	$now = dol_now();
 
 	if ($object->id > 0) {
-		dol_htmloutput_mesg($mesg, $mesgs);
-
 		$product_static = new Product($db);
 
 		$soc = new Societe($db);
diff --git a/htdocs/commande/orderstoinvoice.php b/htdocs/commande/orderstoinvoice.php
index bdb96718dfa..8b16428b23f 100644
--- a/htdocs/commande/orderstoinvoice.php
+++ b/htdocs/commande/orderstoinvoice.php
@@ -58,6 +58,8 @@ $sortfield		= GETPOST("sortfield",'alpha');
 $sortorder		= GETPOST("sortorder",'alpha');
 $viewstatut		= GETPOST('viewstatut');
 
+$error = 0;
+
 if (! $sortfield) $sortfield='c.rowid';
 if (! $sortorder) $sortorder='DESC';
 
@@ -71,7 +73,8 @@ if ($action == 'create')
 {
 	if (is_array($selected) == false)
 	{
-		$mesgs = array('<div class="error">'.$langs->trans('Error_OrderNotChecked').'</div>');
+		$error++;
+		setEventMessage($langs->trans('Error_OrderNotChecked'), 'errors');
 	}
 	else
 	{
@@ -90,7 +93,7 @@ $hookmanager->initHooks(array('orderstoinvoice'));
  * Actions
  */
 
-if (($action == 'create' || $action == 'add') && empty($mesgs))
+if (($action == 'create' || $action == 'add') && !$error)
 {
 	require_once DOL_DOCUMENT_ROOT.'/core/modules/facture/modules_facture.php';
 	require_once DOL_DOCUMENT_ROOT.'/core/class/discount.class.php';
@@ -244,7 +247,7 @@ if (($action == 'create' || $action == 'add') && empty($mesgs))
 										}
 										else
 										{
-											$mesgs[]=$discount->error;
+											setEventMessage($discount->error, 'errors');
 											$error++;
 											break;
 										}
@@ -313,7 +316,7 @@ if (($action == 'create' || $action == 'add') && empty($mesgs))
 							}
 							else
 							{
-								$mesgs[]=$objectsrc->error;
+								setEventMessage($objectsrc->error, 'errors');
 								$error++;
 							}
 							$ii++;
@@ -321,7 +324,7 @@ if (($action == 'create' || $action == 'add') && empty($mesgs))
 					}
 					else
 					{
-						$mesgs[]=$object->error;
+						setEventMessage($object->error, 'errors');
 						$error++;
 					}
 				}
@@ -341,7 +344,8 @@ if (($action == 'create' || $action == 'add') && empty($mesgs))
 			$action='create';
 			$_GET["origin"]=$_POST["origin"];
 			$_GET["originid"]=$_POST["originid"];
-			$mesgs[]='<div class="error">'.$object->error.'</div>';
+			setEventMessage($object->error, 'errors');
+			$error++;
 		}
 	}
 }
@@ -357,7 +361,7 @@ $formfile = new FormFile($db);
 $companystatic = new Societe($db);
 
 // Mode creation
-if ($action == 'create' && empty($mesgs))
+if ($action == 'create' && !$error)
 {
 	$facturestatic=new Facture($db);
 
@@ -497,7 +501,7 @@ if ($action == 'create' && empty($mesgs))
 
 
 //Mode liste
-if (($action != 'create' && $action != 'add') || ! empty($mesgs))
+if (($action != 'create' && $action != 'add') || !$error)
 {
 	llxHeader();
 	?>
@@ -693,7 +697,5 @@ if (($action != 'create' && $action != 'add') || ! empty($mesgs))
 
 }
 
-dol_htmloutput_mesg($mesg,$mesgs);
-
 llxFooter();
 $db->close();
diff --git a/htdocs/compta/bank/annuel.php b/htdocs/compta/bank/annuel.php
index e54c501fdab..30cf5b9c5ac 100644
--- a/htdocs/compta/bank/annuel.php
+++ b/htdocs/compta/bank/annuel.php
@@ -289,7 +289,7 @@ if ($result < 0)
 {
 	$langs->load("errors");
 	$error++;
-	$mesg='<div class="error">'.$langs->trans("ErrorFailedToCreateDir").'</div>';
+	setEventMessage($langs->trans("ErrorFailedToCreateDir"), 'errors');
 }
 else
 {
diff --git a/htdocs/compta/bank/bankid_fr.php b/htdocs/compta/bank/bankid_fr.php
index 3c298e1c0b0..9bd451b8caa 100644
--- a/htdocs/compta/bank/bankid_fr.php
+++ b/htdocs/compta/bank/bankid_fr.php
@@ -79,7 +79,7 @@ if ($action == 'update' && ! $_POST["cancel"])
 		}
 		else
 		{
-			$message='<div class="error">'.$account->error.'</div>';
+			setEventMessage($account->error, 'errors');
 			$action='edit';     // Force chargement page edition
 		}
 	}
@@ -304,8 +304,6 @@ if ($_GET["id"] && $action == 'edit' && $user->rights->banque->configurer)
 	print_fiche_titre($langs->trans("EditFinancialAccount"));
 	print "<br>";
 
-	dol_htmloutput_mesg($message);
-
 	print '<form action="'.$_SERVER["PHP_SELF"].'?id='.$account->id.'" method="post">';
 	print '<input type="hidden" name="token" value="'.$_SESSION['newtoken'].'">';
 	print '<input type="hidden" name="action" value="update">';
diff --git a/htdocs/compta/bank/fiche.php b/htdocs/compta/bank/fiche.php
index 57c5e2b075a..58a26007e85 100644
--- a/htdocs/compta/bank/fiche.php
+++ b/htdocs/compta/bank/fiche.php
@@ -181,7 +181,7 @@ if ($_POST["action"] == 'update' && ! $_POST["cancel"])
         }
         else
         {
-            $message='<div class="error">'.$account->error.'</div>';
+	        setEventMessage($account->error, 'errors');
             $action='edit';     // Force chargement page edition
         }
     }
@@ -220,8 +220,6 @@ if ($action == 'create')
 
 	print_fiche_titre($langs->trans("NewFinancialAccount"));
 
-	dol_htmloutput_mesg($message);
-
     if ($conf->use_javascript_ajax)
     {
         print "\n".'<script type="text/javascript" language="javascript">';
@@ -510,8 +508,6 @@ else
         print_fiche_titre($langs->trans("EditFinancialAccount"));
         print "<br>";
 
-        if ($message) { print "$message<br>\n"; }
-
         if ($conf->use_javascript_ajax)
         {
             print "\n".'<script type="text/javascript" language="javascript">';
diff --git a/htdocs/compta/bank/graph.php b/htdocs/compta/bank/graph.php
index 7a7f03c7d98..9351cc5fa9a 100644
--- a/htdocs/compta/bank/graph.php
+++ b/htdocs/compta/bank/graph.php
@@ -46,7 +46,6 @@ $result=restrictedArea($user,'banque',$id,'bank_account&bank_account','','',$fie
 $account=$_GET["account"];
 $mode='standard';
 if (isset($_GET["mode"]) && $_GET["mode"] == 'showalltime') $mode='showalltime';
-$mesg = '';
 $error=0;
 
 
@@ -82,7 +81,7 @@ if ($result < 0)
 {
 	$langs->load("errors");
 	$error++;
-	$mesg='<div class="error">'.$langs->trans("ErrorFailedToCreateDir").'</div>';
+	setEventMessage($langs->trans("ErrorFailedToCreateDir"), 'errors');
 }
 else
 {
@@ -756,8 +755,6 @@ else
 $head=bank_prepare_head($acct);
 dol_fiche_head($head,'graph',$langs->trans("FinancialAccount"),0,'account');
 
-if ($mesg) print $mesg.'<br>';
-
 print '<table class="border" width="100%">';
 
 $linkback = '<a href="'.DOL_URL_ROOT.'/compta/bank/index.php">'.$langs->trans("BackToList").'</a>';
diff --git a/htdocs/compta/bank/ligne.php b/htdocs/compta/bank/ligne.php
index 1ebc99a344d..89fd5727dc7 100644
--- a/htdocs/compta/bank/ligne.php
+++ b/htdocs/compta/bank/ligne.php
@@ -99,7 +99,7 @@ if ($user->rights->banque->modifier && $action == "update")
 
 	if ($ac->courant == 2 && $_POST['value'] != 'LIQ')
 	{
-		$mesg = '<div class="error">'.$langs->trans("ErrorCashAccountAcceptsOnlyCashMoney").'</div>';
+		setEventMessage($langs->trans("ErrorCashAccountAcceptsOnlyCashMoney"), 'errors');
 		$error++;
 	}
 
@@ -141,7 +141,7 @@ if ($user->rights->banque->modifier && $action == "update")
 		$result = $db->query($sql);
 		if ($result)
 		{
-			$mesg=$langs->trans("RecordSaved");
+			setEventMessage($langs->trans("RecordSaved"));
 			$db->commit();
 		}
 		else
@@ -161,7 +161,7 @@ if ($user->rights->banque->consolidate && ($action == 'num_releve' || $action ==
     // Check parameters
     if ($rappro && empty($num_rel))
     {
-        $mesg=$langs->trans("ErrorFieldRequired",$langs->transnoentitiesnoconv("AccountStatement"));
+	    setEventMessage($langs->trans("ErrorFieldRequired",$langs->transnoentitiesnoconv("AccountStatement")), 'errors');
         $error++;
     }
 
@@ -179,7 +179,7 @@ if ($user->rights->banque->consolidate && ($action == 'num_releve' || $action ==
         $result = $db->query($sql);
         if ($result)
         {
-            $mesg=$langs->trans("RecordSaved");
+	        setEventMessage($langs->trans("RecordSaved"));
             $db->commit();
         }
         else
@@ -235,8 +235,6 @@ $tabs = array(
 
 dol_fiche_head($tabs, 0, $langs->trans('LineRecord'), 0, 'account');
 
-dol_htmloutput_mesg($mesg);
-
 $sql = "SELECT b.rowid,b.dateo as do,b.datev as dv, b.amount, b.label, b.rappro,";
 $sql.= " b.num_releve, b.fk_user_author, b.num_chq, b.fk_type, b.fk_account, b.fk_bordereau as receiptid,";
 $sql.= " b.emetteur,b.banque";
diff --git a/htdocs/compta/bank/rappro.php b/htdocs/compta/bank/rappro.php
index f8d3ccd0bc7..37c27afc0b6 100644
--- a/htdocs/compta/bank/rappro.php
+++ b/htdocs/compta/bank/rappro.php
@@ -69,7 +69,7 @@ if ($action == 'rappro' && $user->rights->banque->consolidate)
 					$result=$bankline->update_conciliation($user,$_POST["cat"]);
 					if ($result < 0)
 					{
-						$mesg.=$bankline->error;
+						setEventMessage($bankline->error, 'errors');
 						$error++;
 						break;
 					}
@@ -81,7 +81,7 @@ if ($action == 'rappro' && $user->rights->banque->consolidate)
     {
     	$error++;
     	$langs->load("errors");
-        $mesg='<div class="error">'.$langs->trans("ErrorPleaseTypeBankTransactionReportName").'</div>';
+	    setEventMessage($langs->trans("ErrorPleaseTypeBankTransactionReportName"), 'errors');
     }
 
     if (! $error)
@@ -183,8 +183,6 @@ if ($resql)
     print_fiche_titre($langs->trans("Reconciliation").': <a href="account.php?account='.$acct->id.'">'.$acct->label.'</a>');
     print '<br>';
 
-    dol_htmloutput_mesg($mesg);
-
     // Show last bank receipts
     $nbmax=5;
     $liste="";
diff --git a/htdocs/compta/bank/treso.php b/htdocs/compta/bank/treso.php
index 8ae2974b33f..909770cf38c 100644
--- a/htdocs/compta/bank/treso.php
+++ b/htdocs/compta/bank/treso.php
@@ -49,10 +49,6 @@ $result=restrictedArea($user,'banque',$id,'bank_account&bank_account','','',$fie
 $vline=isset($_GET["vline"])?$_GET["vline"]:$_POST["vline"];
 $page=isset($_GET["page"])?$_GET["page"]:0;
 
-$mesg='';
-
-
-
 /*
  * View
  */
@@ -115,10 +111,6 @@ if ($_REQUEST["account"] || $_REQUEST["ref"])
 
 	print '<br>';
 
-
-	if ($mesg) print '<div class="error">'.$mesg.'</div>';
-
-
 	$solde = $acct->solde(0);
 
 	/*
diff --git a/htdocs/compta/facture.php b/htdocs/compta/facture.php
index 29a25760886..f93e9a2032f 100644
--- a/htdocs/compta/facture.php
+++ b/htdocs/compta/facture.php
@@ -115,9 +115,9 @@ include DOL_DOCUMENT_ROOT . '/core/actions_setnotes.inc.php'; // Must be include
 
 // Action clone object
 if ($action == 'confirm_clone' && $confirm == 'yes' && $user->rights->facture->creer) {
-	if (1 == 0 && empty($_REQUEST["clone_content"]) && empty($_REQUEST["clone_receivers"])) {
-		$mesgs [] = '<div class="error">' . $langs->trans("NoCloneOptionsSpecified") . '</div>';
-	} else {
+//	if (1 == 0 && empty($_REQUEST["clone_content"]) && empty($_REQUEST["clone_receivers"])) {
+//		$mesgs [] = '<div class="error">' . $langs->trans("NoCloneOptionsSpecified") . '</div>';
+//	} else {
 		if ($object->fetch($id) > 0) {
 			$result = $object->createFromClone($socid);
 			if ($result > 0) {
@@ -128,7 +128,7 @@ if ($action == 'confirm_clone' && $confirm == 'yes' && $user->rights->facture->c
 				$action = '';
 			}
 		}
-	}
+//	}
 }
 
 // Change status of invoice
@@ -216,13 +216,13 @@ else if ($action == 'valid' && $user->rights->facture->creer) {
 	if ($object->type == Facture::TYPE_CREDIT_NOTE) {
 		// Si avoir, le signe doit etre negatif
 		if ($object->total_ht >= 0) {
-			$mesgs [] = '<div class="error">' . $langs->trans("ErrorInvoiceAvoirMustBeNegative") . '</div>';
+			setEventMessage($langs->trans("ErrorInvoiceAvoirMustBeNegative"), 'errors');
 			$action = '';
 		}
 	} else {
 		// Si non avoir, le signe doit etre positif
 		if (empty($conf->global->FACTURE_ENABLE_NEGATIVE) && $object->total_ht < 0) {
-			$mesgs [] = '<div class="error">' . $langs->trans("ErrorInvoiceOfThisTypeMustBePositive") . '</div>';
+			setEventMessage($langs->trans("ErrorInvoiceOfThisTypeMustBePositive"), 'errors');
 			$action = '';
 		}
 	}
@@ -319,7 +319,7 @@ else if ($action == "setabsolutediscount" && $user->rights->facture->creer) {
 		if ($ret > 0) {
 			$result = $object->insert_discount($_POST["remise_id"]);
 			if ($result < 0) {
-				$mesgs [] = '<div class="error">' . $object->error . '</div>';
+				setEventMessage($object->error, 'errors');
 			}
 		} else {
 			dol_print_error($db, $object->error);
@@ -332,7 +332,7 @@ else if ($action == "setabsolutediscount" && $user->rights->facture->creer) {
 
 		$result = $discount->link_to_invoice(0, $id);
 		if ($result < 0) {
-			$mesgs [] = '<div class="error">' . $discount->error . '</div>';
+			setEventMessage($discount->error, 'errors');
 		}
 	}
 }
@@ -571,7 +571,6 @@ else if ($action == 'confirm_converttoreduc' && $confirm == 'yes' && $user->righ
 			$result = $object->set_paid($user);
 			if ($result >= 0)
 			{
-				//$mesgs[]='OK'.$discount->id;
 				$db->commit();
 			}
 			else
@@ -642,8 +641,9 @@ else if ($action == 'add' && $user->rights->facture->creer)
 			$object->type = Facture::TYPE_REPLACEMENT;
 
 			$id = $object->createFromCurrent($user);
-			if ($id <= 0)
-				$mesgs [] = $object->error;
+			if ($id <= 0) {
+				setEventMessage($object->error, 'errors');
+			}
 		}
 	}
 
@@ -888,7 +888,7 @@ else if ($action == 'add' && $user->rights->facture->creer)
 									$amountdeposit = ($totalamount * $valuedeposit) / 100;
 								}
 							} else {
-								$mesgs [] = $srcobject->error;
+								setEventMessage($srcobject->error, 'errors');
 								$error ++;
 							}
 						}
@@ -955,7 +955,7 @@ else if ($action == 'add' && $user->rights->facture->creer)
 									if ($discountid > 0) {
 										$result = $object->insert_discount($discountid); // This include link_to_invoice
 									} else {
-										$mesgs [] = $discount->error;
+										setEventMessage($discount->error, 'errors');
 										$error ++;
 										break;
 									}
@@ -1016,12 +1016,12 @@ else if ($action == 'add' && $user->rights->facture->creer)
 							if ($reshook < 0)
 								$error ++;
 						} else {
-							$mesgs [] = $srcobject->error;
+							setEventMessage($srcobject->error, 'errors');
 							$error ++;
 						}
 					}
 				} else {
-					$mesgs [] = $object->error;
+					setEventMessage($object->error, 'errors');
 					$error ++;
 				}
 			} 			// If some invoice's lines already known
@@ -1054,7 +1054,7 @@ else if ($action == 'add' && $user->rights->facture->creer)
 		$action = 'create';
 		$_GET ["origin"] = $_POST["origin"];
 		$_GET ["originid"] = $_POST["originid"];
-		$mesgs [] = '<div class="error">' . $object->error . '</div>';
+		setEventMessage($object->error, 'errors');
 	}
 }
 
@@ -1606,7 +1606,7 @@ if (($action == 'send' || $action == 'relance') && ! $_POST['addfile'] && ! $_PO
 			require_once DOL_DOCUMENT_ROOT . '/core/class/CMailFile.class.php';
 			$mailfile = new CMailFile($subject, $sendto, $from, $message, $filepath, $mimetype, $filename, $sendtocc, '', $deliveryreceipt, - 1);
 			if ($mailfile->error) {
-				$mesgs [] = '<div class="error">' . $mailfile->error . '</div>';
+				setEventMessage($mailfile->error, 'errors');
 			} else {
 				$result = $mailfile->sendfile();
 				if ($result) {
@@ -1642,15 +1642,15 @@ if (($action == 'send' || $action == 'relance') && ! $_POST['addfile'] && ! $_PO
 					}
 				} else {
 					$langs->load("other");
-					$mesg = '<div class="error">';
+
 					if ($mailfile->error) {
 						$mesg .= $langs->trans('ErrorFailedToSendMail', $from, $sendto);
 						$mesg .= '<br>' . $mailfile->error;
 					} else {
 						$mesg .= 'No mail sent. Feature is disabled by option MAIN_DISABLE_ALL_MAILS';
 					}
-					$mesg .= '</div>';
-					$mesgs [] = $mesg;
+
+					setEventMessage($mesg, 'errors');
 				}
 			}
 			/*            }
@@ -1662,12 +1662,12 @@ if (($action == 'send' || $action == 'relance') && ! $_POST['addfile'] && ! $_PO
 			}*/
 		} else {
 			$langs->load("errors");
-			$mesgs [] = '<div class="error">' . $langs->trans('ErrorCantReadFile', $file) . '</div>';
+			setEventMessage($langs->trans('ErrorCantReadFile', $file), 'errors');
 			dol_syslog('Failed to read file: ' . $file);
 		}
 	} else {
 		$langs->load("other");
-		$mesgs [] = '<div class="error">' . $langs->trans('ErrorFailedToReadEntity', $langs->trans("Invoice")) . '</div>';
+		setEventMessage($langs->trans('ErrorFailedToReadEntity', $langs->trans("Invoice")), 'errors');
 		dol_syslog('Impossible de lire les donnees de la facture. Le fichier facture n\'a peut-etre pas ete genere.');
 	}
 
@@ -1749,9 +1749,9 @@ if (! empty($conf->global->MAIN_DISABLE_CONTACTS_TAB) && $user->rights->facture-
 		} else {
 			if ($object->error == 'DB_ERROR_RECORD_ALREADY_EXISTS') {
 				$langs->load("errors");
-				$mesgs [] = '<div class="error">' . $langs->trans("ErrorThisContactIsAlreadyDefinedAsThisType") . '</div>';
+				setEventMessage($langs->trans("ErrorThisContactIsAlreadyDefinedAsThisType"), 'errors');
 			} else {
-				$mesgs [] = '<div class="error">' . $object->error . '</div>';
+				setEventMessage($object->error, 'errors');
 			}
 		}
 	}
@@ -3764,7 +3764,5 @@ if ($action == 'create')
 	}
 }
 
-dol_htmloutput_mesg('', $mesgs);
-
 llxFooter();
 $db->close();