diff --git a/ChangeLog b/ChangeLog
index 43dc578e49b..a3f9db52ac9 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -44,7 +44,9 @@ For developers:
 - New: Add option MAIN_MOTD_SETUPPAGE to add a content onto setup page. Also content for
   MAIN_MOTD_SETUPPAGE, MAIN_MOTD_SETUPPAGE, MAIN_HOME now accept "|langfile" into translation
   key to use a specific language file.
- 
+- New: Make some changes to allow usage of several alternative $dolibarr_main_url_root variables.
+  Fix also several bugs with old code. 
+   
 
 ***** ChangeLog for 3.4 compared to 3.3.2 *****
 For users:
diff --git a/htdocs/admin/system/constall.php b/htdocs/admin/system/constall.php
index 681b108e1b8..3386e3aa135 100644
--- a/htdocs/admin/system/constall.php
+++ b/htdocs/admin/system/constall.php
@@ -183,7 +183,6 @@ foreach($configfileparameters as $key)
 			print "<td>";
 			if ($newkey == 'dolibarr_main_db_pass') print preg_replace('/./i','*',${$newkey});
 			else if ($newkey == 'dolibarr_main_url_root' && preg_match('/__auto__/',${$newkey})) print ${$newkey}.' => '.constant('DOL_MAIN_URL_ROOT');
-			else if ($newkey == 'dolibarr_main_url_root_alt' && preg_match('/__auto__/',${$newkey})) print ${$newkey}.' => '.constant('DOL_MAIN_URL_ROOT_ALT');
 			else print ${$newkey};
 			if ($newkey == 'dolibarr_main_url_root' && $newkey != DOL_MAIN_URL_ROOT) print ' (currently overwritten by autodetected value: '.DOL_MAIN_URL_ROOT.')';
 			print "</td>";
diff --git a/htdocs/admin/system/dolibarr.php b/htdocs/admin/system/dolibarr.php
index b32ddf573bd..59f3b3f3856 100644
--- a/htdocs/admin/system/dolibarr.php
+++ b/htdocs/admin/system/dolibarr.php
@@ -302,7 +302,6 @@ foreach($configfileparameters as $key => $value)
 			print "<td>";
 			if ($newkey == 'dolibarr_main_db_pass') print preg_replace('/./i','*',${$newkey});
 			else if ($newkey == 'dolibarr_main_url_root' && preg_match('/__auto__/',${$newkey})) print ${$newkey}.' => '.constant('DOL_MAIN_URL_ROOT');
-			else if ($newkey == 'dolibarr_main_url_root_alt' && preg_match('/__auto__/',${$newkey})) print ${$newkey}.' => '.constant('DOL_MAIN_URL_ROOT_ALT');
 			else print ${$newkey};
 			if ($newkey == 'dolibarr_main_url_root' && $newkey != DOL_MAIN_URL_ROOT) print ' (currently overwritten by autodetected value: '.DOL_MAIN_URL_ROOT.')';
 			print "</td>";
diff --git a/htdocs/admin/tools/update.php b/htdocs/admin/tools/update.php
index 3aae9b0f009..133dd247459 100644
--- a/htdocs/admin/tools/update.php
+++ b/htdocs/admin/tools/update.php
@@ -75,7 +75,7 @@ if (GETPOST('action','alpha')=='install')
 		$result=dol_move_uploaded_file($_FILES['fileinstall']['tmp_name'],$newfile,1,0,$_FILES['fileinstall']['error']);
 		if ($result > 0)
 		{
-			$documentrootalt=DOL_DOCUMENT_ROOT_ALT;
+			$documentrootalt=DOL_DOCUMENT_ROOT.'/extensions';
 			$result=dol_uncompress($newfile,$documentrootalt);
 			if (! empty($result['error']))
 			{
@@ -95,7 +95,7 @@ if (GETPOST('action','alpha')=='install')
  * View
  */
 
-$dirins=DOL_DOCUMENT_ROOT_ALT;
+$dirins=DOL_DOCUMENT_ROOT.'/extensions';
 $dirins_ok=(is_dir($dirins));
 
 $wikihelp='EN:Installation_-_Upgrade|FR:Installation_-_Mise_à_jour|ES:Instalación_-_Actualización';
@@ -141,7 +141,7 @@ print '<b>'.$langs->trans("StepNb",3).'</b>: ';
 print $langs->trans("UnpackPackageInDolibarrRoot",$dolibarrroot).'<br>';
 if (! empty($conf->global->MAIN_ONLINE_INSTALL_MODULE))
 {
-	if ($dirins_ok && $dirins != 'DOL_DOCUMENT_ROOT_ALT')
+	if ($dirins_ok)
 	{
 		print '<form enctype="multipart/form-data" method="POST" class="noborder" action="'.$_SERVER["PHP_SELF"].'" name="forminstall">';
 		print '<input type="hidden" name="action" value="install">';
@@ -151,8 +151,8 @@ if (! empty($conf->global->MAIN_ONLINE_INSTALL_MODULE))
 	}
 	else
 	{
-		$message=info_admin($langs->trans("NotExistsDirect").$langs->trans("InfDirAlt").$langs->trans("InfDirExample"));
-		print $message;
+		$message=info_admin($langs->trans("NotExistsDirect",$dirins).$langs->trans("InfDirAlt").$langs->trans("InfDirExample"));
+		print '<div class="warning">'.$message.'</div>';
 	}
 }
 else
diff --git a/htdocs/comm/propal/class/propal.class.php b/htdocs/comm/propal/class/propal.class.php
index a6f3647b45e..77d2b9ecd66 100644
--- a/htdocs/comm/propal/class/propal.class.php
+++ b/htdocs/comm/propal/class/propal.class.php
@@ -2468,22 +2468,32 @@ class Propal extends CommonObject
         global $conf, $db, $langs;
         $langs->load("propal");
 
-        $dir = DOL_DOCUMENT_ROOT . "/core/modules/propale/";
-
         if (! empty($conf->global->PROPALE_ADDON))
         {
-            $file = $conf->global->PROPALE_ADDON.".php";
+        	$mybool=false;
 
-            // Chargement de la classe de numerotation
+            $file = $conf->global->PROPALE_ADDON.".php";
             $classname = $conf->global->PROPALE_ADDON;
-            require_once $dir.$file;
+
+            // Include file with class
+            foreach ($conf->file->dol_document_root as $dirroot)
+            {
+            	$dir = $dirroot."/core/modules/propale/";
+            	// Load file with numbering class (if found)
+            	$mybool|=@include_once $dir.$file;
+            }
+
+            if (! $mybool)
+            {
+            	dol_print_error('',"Failed to include file ".$file);
+            	return '';
+            }
 
             $obj = new $classname();
-
             $numref = "";
             $numref = $obj->getNextValue($soc,$this);
 
-            if ( $numref != "")
+            if ($numref != "")
             {
                 return $numref;
             }
diff --git a/htdocs/commande/class/commande.class.php b/htdocs/commande/class/commande.class.php
index 8a2307aca81..abf1bb51db3 100644
--- a/htdocs/commande/class/commande.class.php
+++ b/htdocs/commande/class/commande.class.php
@@ -129,36 +129,39 @@ class Commande extends CommonOrder
         global $db, $langs, $conf;
         $langs->load("order");
 
-        $dir = DOL_DOCUMENT_ROOT . "/core/modules/commande";
-
         if (! empty($conf->global->COMMANDE_ADDON))
         {
-            $file = $conf->global->COMMANDE_ADDON.".php";
+        	$mybool=false;
 
-            // Chargement de la classe de numerotation
+            $file = $conf->global->COMMANDE_ADDON.".php";
             $classname = $conf->global->COMMANDE_ADDON;
 
-            $result=include_once $dir.'/'.$file;
-            if ($result)
-            {
-                $obj = new $classname();
-                $numref = "";
-                $numref = $obj->getNextValue($soc,$this);
+            // Include file with class
+            foreach ($conf->file->dol_document_root as $dirroot)
+            {
+            	$dir = $dirroot."/core/modules/commande/";
+            	// Load file with numbering class (if found)
+            	$mybool|=@include_once $dir.$file;
+            }
 
-                if ( $numref != "")
-                {
-                    return $numref;
-                }
-                else
-                {
-                    dol_print_error($db,get_class($this)."::getNextNumRef ".$obj->error);
-                    return "";
-                }
+            if (! $mybool)
+            {
+            	dol_print_error('',"Failed to include file ".$file);
+            	return '';
+            }
+
+            $obj = new $classname();
+            $numref = "";
+            $numref = $obj->getNextValue($soc,$this);
+
+            if ($numref != "")
+            {
+            	return $numref;
             }
             else
-            {
-                print $langs->trans("Error")." ".$langs->trans("Error_COMMANDE_ADDON_NotDefined");
-                return "";
+			{
+            	dol_print_error($db,get_class($this)."::getNextNumRef ".$obj->error);
+            	return "";
             }
         }
         else
diff --git a/htdocs/compta/facture/class/facture.class.php b/htdocs/compta/facture/class/facture.class.php
index 1e71d781e7f..53e7178ce6d 100644
--- a/htdocs/compta/facture/class/facture.class.php
+++ b/htdocs/compta/facture/class/facture.class.php
@@ -2540,11 +2540,10 @@ class Facture extends CommonInvoice
 		}
 
 		$obj = new $classname();
-
 		$numref = "";
 		$numref = $obj->getNumRef($soc,$this,$mode);
 
-		if ( $numref != "")
+		if ($numref != "")
 		{
 			return $numref;
 		}
diff --git a/htdocs/core/lib/functions.lib.php b/htdocs/core/lib/functions.lib.php
index fbbf6bbdc1d..56bdb1207c7 100644
--- a/htdocs/core/lib/functions.lib.php
+++ b/htdocs/core/lib/functions.lib.php
@@ -244,21 +244,30 @@ function dol_include_once($relpath, $classname='')
 
 
 /**
- *	Return path of url or filesystem. Return default_root or alternate root if file_exist fails
+ *	Return path of url or filesystem. Return alternate root if exists
  *
- * 	@param	string	$path		Relative path to file (if mode=0, ie: mydir/myfile, ../myfile, ...) or relative url (if mode=1).
+ * 	@param	string	$path		Relative path to file (if mode=0) or relative url (if mode=1). Ie: mydir/myfile, ../myfile
  *  @param	int		$type		0=Used for a Filesystem path, 1=Used for an URL path (output relative), 2=Used for an URL path (output full path)
- *  @return string				Full filsystem path (if mode=0), Full url path (if mode=1)
+ *  @return string				Full filesystem path (if mode=0), Full url path (if mode=1)
  */
 function dol_buildpath($path, $type=0)
 {
+	global $conf;
+
+	$path=preg_replace('/^\//','',$path);
+
 	if (empty($type))	// For a filesystem path
 	{
-		$res = DOL_DOCUMENT_ROOT.$path;	// Standard value
-		if (defined('DOL_DOCUMENT_ROOT_ALT') && DOL_DOCUMENT_ROOT_ALT)	// We check only if alternate feature is used
-		{
-			if (! file_exists(DOL_DOCUMENT_ROOT.$path)) $res = DOL_DOCUMENT_ROOT_ALT.$path;
-		}
+		$res = DOL_DOCUMENT_ROOT.'/'.$path;	// Standard value
+		foreach ($conf->file->dol_document_root as $key => $dirroot)	// ex: array(["main"]=>"/home/main/htdocs", ["alt0"]=>"/home/dirmod/htdocs", ...)
+		{
+			if ($key == 'main') continue;
+			if (file_exists($dirroot.'/'.$path))
+			{
+				$res=$dirroot.'/'.$path;
+				break;
+			}
+		}
 	}
 	else				// For an url path
 	{
@@ -266,29 +275,23 @@ function dol_buildpath($path, $type=0)
 		// Note that trying to know if a file on disk exist by forging path on disk from url
 		// works only for some web server and some setup. This is bugged when
 		// using proxy, rewriting, virtual path, etc...
-		if ($type == 1)
+		$res='';
+		if ($type == 1) $res = DOL_URL_ROOT.'/'.$path;			// Standard value
+		if ($type == 2) $res = DOL_MAIN_URL_ROOT.'/'.$path;		// Standard value
+		foreach ($conf->file->dol_document_root as $key => $dirroot)	// ex: array(["main"]=>"/home/main/htdocs", ["alt0"]=>"/home/dirmod/htdocs", ...)
 		{
-			$res = DOL_URL_ROOT.$path;		// Standard value
-			if (defined('DOL_URL_ROOT_ALT') && DOL_URL_ROOT_ALT)			// We check only if alternate feature is used
+			if ($key == 'main') continue;
+			preg_match('/^([^\?]+(\.css\.php|\.css|\.js\.php|\.js|\.png|\.jpg|\.php)?)/i',$path,$regs);    // Take part before '?'
+			if (! empty($regs[1]))
 			{
-				preg_match('/^([^\?]+(\.css\.php|\.css|\.js\.php|\.js|\.png|\.jpg|\.php)?)/i',$path,$regs);    // Take part before '?'
-				if (! empty($regs[1]))
-				{
-					if (! file_exists(DOL_DOCUMENT_ROOT.$regs[1])) $res = DOL_URL_ROOT_ALT.$path;
+				//print $key.'-'.$dirroot.'/'.$path.'-'.$conf->file->dol_url_root[$type].'<br>'."\n";
+				if (file_exists($dirroot.'/'.$path))
+				{
+					if ($type == 1) $res=DOL_URL_ROOT.$conf->file->dol_url_root[$key].'/'.$path;
+					if ($type == 2) $res=DOL_MAIN_URL_ROOT.$conf->file->dol_url_root[$key].'/'.$path;
+					break;
 				}
-			}
-		}
-		else if ($type == 2)
-		{
-			$res = DOL_MAIN_URL_ROOT.$path;      // Standard value
-			if (defined('DOL_URL_ROOT_ALT') && DOL_URL_ROOT_ALT)            // We check only if alternate feature is used
-			{
-				preg_match('/^([^\?]+(\.css\.php|\.css|\.js\.php|\.js|\.png|\.jpg|\.php)?)/i',$path,$regs);    // Take part before '?'
-				if (! empty($regs[1]))
-				{
-					if (! file_exists(DOL_DOCUMENT_ROOT.$regs[1])) $res = DOL_MAIN_URL_ROOT_ALT.$path;
-				}
-			}
+			}
 		}
 	}
 
@@ -1714,8 +1717,16 @@ function img_picto($alt, $picto, $options = '', $pictoisfullpath = false, $srcon
 		}
 		// Clean parameters
 		if (! preg_match('/(\.png|\.gif)$/i',$picto)) $picto .= '.png';
-		// If img file is not into standard path, we use alternate path (Avoid using DOL_URL_ROOT_ALT for performane)
-		if (defined('DOL_URL_ROOT_ALT') && DOL_URL_ROOT_ALT && ! file_exists(DOL_DOCUMENT_ROOT.'/'.$path.'/img/'.$picto)) $url = DOL_URL_ROOT_ALT;
+		// If alt path are defined, define url where img file is, according to physical path
+		foreach ($conf->file->dol_document_root as $type => $dirroot)	// ex: array(["main"]=>"/home/maindir/htdocs", ["alt0"]=>"/home/moddir/htdocs", ...)
+		{
+			if ($type == 'main') continue;
+			if (file_exists($dirroot.'/'.$path.'/img/'.$picto))
+			{
+				$url=$conf->file->dol_url_root[$type];
+				break;
+			}
+		}
 
 		// $url is '' or '/custom', $path is current theme or
 		$fullpathpicto = $url.'/'.$path.'/img/'.$picto;
diff --git a/htdocs/core/menus/standard/auguria.lib.php b/htdocs/core/menus/standard/auguria.lib.php
index 37179df0f75..204b43f97e0 100644
--- a/htdocs/core/menus/standard/auguria.lib.php
+++ b/htdocs/core/menus/standard/auguria.lib.php
@@ -63,16 +63,14 @@ function print_auguria_menu($db,$atarget,$type_user,&$tabMenu,&$menu,$noout=0)
 			$url = $shorturl = $newTabMenu[$i]['url'];
 			if (! preg_match("/^(http:\/\/|https:\/\/)/i",$newTabMenu[$i]['url']))
 			{
-				$param='';
-				if (! preg_match('/mainmenu/i',$url) || ! preg_match('/leftmenu/i',$url))
-				{
-					if (! preg_match('/\?/',$url)) $param.='?';
-					else $param.='&';
-					$param.='mainmenu='.$newTabMenu[$i]['mainmenu'].'&leftmenu=';
-				}
+				$tmp=explode('?',$newTabMenu[$i]['url'],2);
+				$url = $shorturl = $tmp[0];
+				$param = (isset($tmp[1])?$tmp[1]:'');
+
+				if (! preg_match('/mainmenu/i',$url) || ! preg_match('/leftmenu/i',$url)) $param.=($param?'&':'').'mainmenu='.$newTabMenu[$i]['mainmenu'].'&amp;leftmenu=';
 				//$url.="idmenu=".$newTabMenu[$i]['rowid'];    // Already done by menuLoad
-				$url=dol_buildpath($url,1).$param;
-				$shorturl = $newTabMenu[$i]['url'].$param;
+				$url = dol_buildpath($url,1).($param?'?'.$param:'');
+				$shorturl = $shorturl.($param?'?'.$param:'');
 			}
 			$url=preg_replace('/__LOGIN__/',$user->login,$url);
 			$shorturl=preg_replace('/__LOGIN__/',$user->login,$shorturl);
@@ -246,15 +244,15 @@ function print_left_auguria_menu($db,$menu_array_before,$menu_array_after,&$tabM
 		$sql.= " WHERE entity = ".$conf->entity;
 		$sql.= " AND clos = 0";
 		$sql.= " ORDER BY label";
-	
+
 		$resql = $db->query($sql);
 		if ($resql)
 		{
 			$numr = $db->num_rows($resql);
 			$i = 0;
-	
+
 			if ($numr > 0) 	$newmenu->add('/compta/bank/index.php',$langs->trans("BankAccounts"),0,$user->rights->banque->lire);
-	
+
 			while ($i < $numr)
 			{
 				$objp = $db->fetch_object($resql);
@@ -281,14 +279,14 @@ function print_left_auguria_menu($db,$menu_array_before,$menu_array_after,&$tabM
 			if (! empty($conf->global->$paramkey))
 			{
 				$link="/ftp/index.php?idmenu=".$_SESSION["idmenu"]."&numero_ftp=".$i;
-		
+
 				$newmenu->add($link, dol_trunc($conf->global->$paramkey,24));
 			}
 			$i++;
 		}
-	}	
+	}
+
 
-	
 	// Build final $menu_array = $menu_array_before +$newmenu->liste + $menu_array_after
 	//var_dump($menu_array_before);exit;
 	//var_dump($menu_array_after);exit;
@@ -346,7 +344,7 @@ function print_left_auguria_menu($db,$menu_array_before,$menu_array_after,&$tabM
 			}
 
 			print '<!-- Process menu entry with mainmenu='.$menu_array[$i]['mainmenu'].', leftmenu='.$menu_array[$i]['leftmenu'].', level='.$menu_array[$i]['level'].' enabled='.$menu_array[$i]['enabled'].' -->'."\n";
-				
+
 			// Menu niveau 0
 			if ($menu_array[$i]['level'] == 0)
 			{
diff --git a/htdocs/core/menus/standard/eldy.lib.php b/htdocs/core/menus/standard/eldy.lib.php
index 2f870665bf2..7db79024c62 100644
--- a/htdocs/core/menus/standard/eldy.lib.php
+++ b/htdocs/core/menus/standard/eldy.lib.php
@@ -192,7 +192,7 @@ function print_eldy_menu($db,$atarget,$type_user,&$tabMenu,&$menu,$noout=0)
 		if (empty($noout)) print_end_menu_entry($showmode);
 		$menu->add('/projet/index.php?mainmenu=project&amp;leftmenu=', $langs->trans("Projects"), 0, $showmode, $atarget, "project", '');
 	}
-	
+
 	// HRM
 	$tmpentry=array('enabled'=>(! empty($conf->holiday->enabled)),
 	'perms'=>(! empty($user->rights->holiday->write)),
@@ -201,19 +201,19 @@ function print_eldy_menu($db,$atarget,$type_user,&$tabMenu,&$menu,$noout=0)
 	if ($showmode)
 	{
 		$langs->load("holiday");
-	
+
 		$classname="";
 		if ($_SESSION["mainmenu"] && $_SESSION["mainmenu"] == "hrm") { $classname='class="tmenusel"'; $_SESSION['idmenu']=''; }
 		else $classname = 'class="tmenu"';
 		$idsel='hrm';
-	
+
 		if (empty($noout)) print_start_menu_entry($idsel,$classname,$showmode);
 		if (empty($noout)) print_text_menu_entry($langs->trans("HRM"), $showmode, DOL_URL_ROOT.'/holiday/index.php?mainmenu=hrm&amp;leftmenu=', $id, $idsel, $classname, $atarget);
 		if (empty($noout)) print_end_menu_entry($showmode);
 		$menu->add('/holiday/index.php?mainmenu=holiday&amp;leftmenu=', $langs->trans("HRM"), 0, $showmode, $atarget, "hrm", '');
 	}
-	
-	
+
+
 
 	// Tools
 	$tmpentry=array('enabled'=>(! empty($conf->mailing->enabled) || ! empty($conf->export->enabled) || ! empty($conf->import->enabled)),
@@ -289,16 +289,14 @@ function print_eldy_menu($db,$atarget,$type_user,&$tabMenu,&$menu,$noout=0)
 			$url = $shorturl = $newTabMenu[$i]['url'];
 			if (! preg_match("/^(http:\/\/|https:\/\/)/i",$newTabMenu[$i]['url']))
 			{
-				$param='';
-				if (! preg_match('/mainmenu/i',$url) || ! preg_match('/leftmenu/i',$url))
-				{
-					if (! preg_match('/\?/',$url)) $param.='?';
-					else $param.='&';
-					$param.='mainmenu='.$newTabMenu[$i]['mainmenu'].'&amp;leftmenu=';
-				}
+				$tmp=explode('?',$newTabMenu[$i]['url'],2);
+				$url = $shorturl = $tmp[0];
+				$param = (isset($tmp[1])?$tmp[1]:'');
+
+				if (! preg_match('/mainmenu/i',$url) || ! preg_match('/leftmenu/i',$url)) $param.=($param?'&':'').'mainmenu='.$newTabMenu[$i]['mainmenu'].'&amp;leftmenu=';
 				//$url.="idmenu=".$newTabMenu[$i]['rowid'];    // Already done by menuLoad
-				$url = dol_buildpath($url,1).$param;
-				$shorturl = $newTabMenu[$i]['url'].$param;
+				$url = dol_buildpath($url,1).($param?'?'.$param:'');
+				$shorturl = $shorturl.($param?'?'.$param:'');
 			}
 			$url=preg_replace('/__LOGIN__/',$user->login,$url);
 			$shorturl=preg_replace('/__LOGIN__/',$user->login,$shorturl);
@@ -1099,7 +1097,7 @@ function print_left_eldy_menu($db,$menu_array_before,$menu_array_after,&$tabMenu
 				$newmenu->add("/projet/activity/list.php", $langs->trans("NewTimeSpent"), 1, $user->rights->projet->creer && $user->rights->projet->creer);
 			}
 		}
-		
+
 		/*
 		 * Menu HRM
 		*/
@@ -1108,14 +1106,14 @@ function print_left_eldy_menu($db,$menu_array_before,$menu_array_after,&$tabMenu
 			if (! empty($conf->holiday->enabled))
 			{
 				$langs->load("holiday");
-		
+
 				// HRM: Holiday module
 				$newmenu->add("/holiday/index.php?&leftmenu=hrm", $langs->trans("CPTitreMenu"), 0, $user->rights->holiday->write, '', $mainmenu, 'hrm');
 				$newmenu->add("/holiday/fiche.php?&action=request", $langs->trans("MenuAddCP"), 1,$user->rights->holiday->write);
 				$newmenu->add("/holiday/define_holiday.php?&action=request", $langs->trans("MenuConfCP"), 1, $user->rights->holiday->define_holiday);
 				$newmenu->add("/holiday/view_log.php?&action=request", $langs->trans("MenuLogCP"), 1, $user->rights->holiday->view_log);
 				$newmenu->add("/holiday/month_report.php?&action=request", $langs->trans("MenuReportMonth"), 1, $user->rights->holiday->view_log);
-		
+
 			}
 		}
 
@@ -1302,7 +1300,11 @@ function print_left_eldy_menu($db,$menu_array_before,$menu_array_after,&$tabMenu
 			}
 
 			// For external modules
-			$url = dol_buildpath($menu_array[$i]['url'], 1);
+			$tmp=explode('?',$menu_array[$i]['url'],2);
+			$url = $tmp[0];
+			$param = (isset($tmp[1])?$tmp[1]:'');
+			$url = dol_buildpath($url,1).($param?'?'.$param:'');
+
 			$url=preg_replace('/__LOGIN__/',$user->login,$url);
 			$url=preg_replace('/__USERID__/',$user->id,$url);
 
diff --git a/htdocs/filefunc.inc.php b/htdocs/filefunc.inc.php
index abdb1006266..483b71f3e07 100755
--- a/htdocs/filefunc.inc.php
+++ b/htdocs/filefunc.inc.php
@@ -145,10 +145,6 @@ if (empty($dolibarr_main_data_root))
 define('DOL_CLASS_PATH', 'class/');									// Filesystem path to class dir (defined only for some code that want to be compatible with old versions without this parameter)
 define('DOL_DATA_ROOT', $dolibarr_main_data_root);					// Filesystem data (documents)
 define('DOL_DOCUMENT_ROOT', $dolibarr_main_document_root);			// Filesystem core php (htdocs)
-if (! empty($dolibarr_main_document_root_alt))
-{
-	define('DOL_DOCUMENT_ROOT_ALT', $dolibarr_main_document_root_alt);	// Filesystem paths to alternate core php (alternate htdocs)
-}
 // Define DOL_MAIN_URL_ROOT and DOL_URL_ROOT
 $tmp='';
 $found=0;
@@ -175,11 +171,12 @@ else $tmp='http'.(((empty($_SERVER["HTTPS"]) || $_SERVER["HTTPS"] != 'on') && (e
 if (! empty($dolibarr_main_force_https)) $tmp=preg_replace('/^http:/i','https:',$tmp);
 define('DOL_MAIN_URL_ROOT', $tmp);											// URL absolute root (https://sss/dolibarr, ...)
 $uri=preg_replace('/^http(s?):\/\//i','',constant('DOL_MAIN_URL_ROOT'));	// $uri contains url without http*
-$suburi = strstr($uri, '/');												// $suburi contains url without domain
+$suburi = strstr($uri, '/');												// $suburi contains url without domain:port
 if ($suburi == '/') $suburi = '';											// If $suburi is /, it is now ''
 define('DOL_URL_ROOT', $suburi);											// URL relative root ('', '/dolibarr', ...)
 
-// Define DOL_MAIN_URL_ROOT_ALT and DOL_URL_ROOT_ALT
+/*
+// Define DOL_MAIN_URL_ROOT_ALT and DOL_URL_ROOT_ALT (deprecated)
 if (! empty($dolibarr_main_url_root_alt))
 {
     $altpart=str_replace($dolibarr_main_url_root,'',$dolibarr_main_url_root_alt);
@@ -188,12 +185,13 @@ if (! empty($dolibarr_main_url_root_alt))
 	//$tmp_alt=$dolibarr_main_url_root_alt;
     define('DOL_MAIN_URL_ROOT_ALT', $tmp_alt);           							// URL absolute root (https://sss/dolibarr/custom, ...)
 	$uri=preg_replace('/^http(s?):\/\//i','',constant('DOL_MAIN_URL_ROOT_ALT'));    // $uri contains url without http*
-	$suburi = strstr($uri, '/');        											// $suburi contains url without domain
+	$suburi = strstr($uri, '/');        											// $suburi contains url without domain:port
 	if ($suburi == '/') $suburi = '';   											// If $suburi is /, it is now ''
 	define('DOL_URL_ROOT_ALT', $suburi);    										// URL relative root ('', '/dolibarr/custom', ...)
 }
+*/
 
-//print DOL_URL_ROOT.'-'.DOL_URL_ROOT_ALT;
+//print DOL_URL_ROOT;
 
 // Define prefix MAIN_DB_PREFIX
 define('MAIN_DB_PREFIX',$dolibarr_main_db_prefix);
diff --git a/htdocs/fourn/class/fournisseur.facture.class.php b/htdocs/fourn/class/fournisseur.facture.class.php
index 19912e3f58f..e62832ec692 100644
--- a/htdocs/fourn/class/fournisseur.facture.class.php
+++ b/htdocs/fourn/class/fournisseur.facture.class.php
@@ -1422,11 +1422,10 @@ class FactureFournisseur extends CommonInvoice
         }
 
         $obj = new $classname();
-
         $numref = "";
         $numref = $obj->getNumRef($soc,$this,$mode);
 
-        if ( $numref != "")
+        if ($numref != "")
         {
         	return $numref;
         }
diff --git a/htdocs/install/etape1.php b/htdocs/install/etape1.php
index 486748f92a7..83dd849d9a0 100644
--- a/htdocs/install/etape1.php
+++ b/htdocs/install/etape1.php
@@ -359,6 +359,7 @@ if (! $error && $db->connected && $action == "set")
             $dir[5] = $main_data_dir."/ficheinter";
             $dir[6] = $main_data_dir."/produit";
             $dir[7] = $main_data_dir."/doctemplates";
+            $dir[7] = $main_data_dir."/extensions";
 
             // Boucle sur chaque repertoire de dir[] pour les creer s'ils nexistent pas
             $num=count($dir);
diff --git a/htdocs/install/etape5.php b/htdocs/install/etape5.php
index 08651603e61..61fde5a1215 100644
--- a/htdocs/install/etape5.php
+++ b/htdocs/install/etape5.php
@@ -145,7 +145,7 @@ if ($action == "set" || empty($action) || preg_match('/upgrade/i',$action))
     // Create the global $hookmanager object
     include_once DOL_DOCUMENT_ROOT.'/core/class/hookmanager.class.php';
     $hookmanager=new HookManager($db);
-        
+
     $ok = 0;
 
     // If first install
@@ -225,7 +225,6 @@ if ($action == "set" || empty($action) || preg_match('/upgrade/i',$action))
                 if (! empty($force_install_module))
                 {
                     if (! defined('DOL_DOCUMENT_ROOT') && ! empty($dolibarr_main_document_root)) define('DOL_DOCUMENT_ROOT',$dolibarr_main_document_root);
-                    if (! defined('DOL_DOCUMENT_ROOT_ALT') && ! empty($dolibarr_main_document_root_alt)) define('DOL_DOCUMENT_ROOT_ALT',$dolibarr_main_document_root_alt);
 
                     $tmparray=explode(',',$force_install_module);
                     foreach ($tmparray as $modtoactivate)
diff --git a/htdocs/install/inc.php b/htdocs/install/inc.php
index 7d4a22fffa2..081204415b2 100644
--- a/htdocs/install/inc.php
+++ b/htdocs/install/inc.php
@@ -133,10 +133,6 @@ define('MAIN_DB_PREFIX',(isset($dolibarr_main_db_prefix)?$dolibarr_main_db_prefi
 
 define('DOL_CLASS_PATH', 'class/');                             // Filsystem path to class dir
 define('DOL_DATA_ROOT',(isset($dolibarr_main_data_root)?$dolibarr_main_data_root:''));
-if (! empty($dolibarr_main_document_root_alt))
-{
-    define('DOL_DOCUMENT_ROOT_ALT', $dolibarr_main_document_root_alt);	// Filesystem paths to alternate core php (alternate htdocs)
-}
 define('DOL_MAIN_URL_ROOT', (isset($dolibarr_main_url_root)?$dolibarr_main_url_root:''));           // URL relative root
 $uri=preg_replace('/^http(s?):\/\//i','',constant('DOL_MAIN_URL_ROOT'));  // $uri contains url without http*
 $suburi = strstr($uri, '/');       // $suburi contains url without domain
@@ -323,7 +319,7 @@ function conf($dolibarr_main_document_root)
     	{
     		throw new Exception('Missing log handler file '.$handler.'.php');
     	}
-    
+
     	require_once $file;
     	$loghandlerinstance = new $handler();
     	if (!$loghandlerinstance instanceof LogHandlerInterface)
@@ -333,7 +329,7 @@ function conf($dolibarr_main_document_root)
 
 		if (empty($conf->loghandlers[$handler])) $conf->loghandlers[$handler]=$loghandlerinstance;
     }
-    
+
     return 1;
 }
 
diff --git a/htdocs/langs/fr_FR/agenda.lang b/htdocs/langs/fr_FR/agenda.lang
index 20a8141c619..f0029da19e4 100644
--- a/htdocs/langs/fr_FR/agenda.lang
+++ b/htdocs/langs/fr_FR/agenda.lang
@@ -19,8 +19,8 @@ EventOnFullDay=Événement sur la(les) journée(s)
 SearchAnAction= Rechercher un événement/tâche
 MenuToDoActions= Événements incomplets
 MenuDoneActions= Événements terminés
-MenuToDoMyActions= Mes événements incomplets
-MenuDoneMyActions= Mes événements terminés
+MenuToDoMyActions= Mes événem. incomplets
+MenuDoneMyActions= Mes événem. terminés
 ListOfEvents= Liste des événements Dolibarr
 ActionsAskedBy=Événements enregistrés par
 ActionsToDoBy=Événements affectés à
diff --git a/htdocs/main.inc.php b/htdocs/main.inc.php
index e4a22c97285..a9ca7e4c2f7 100644
--- a/htdocs/main.inc.php
+++ b/htdocs/main.inc.php
@@ -1038,7 +1038,7 @@ function top_htmlhead($head, $title='', $disablejs=0, $disablehead=0, $arrayofjs
         		$filescss=(array) $filescss;	// To be sure filecss is an array
         		foreach($filescss as $cssfile)
         		{
-	        		// cssfile is a relative path
+        			// cssfile is a relative path
 	        		print '<!-- Includes CSS added by module '.$modcss. ' -->'."\n".'<link rel="stylesheet" type="text/css" title="default" href="'.dol_buildpath($cssfile,1);
 	        		// We add params only if page is not static, because some web server setup does not return content type text/css if url has parameters, so browser cache is not used.
 	        		if (!preg_match('/\.css$/i',$cssfile)) print $themeparam;
diff --git a/htdocs/master.inc.php b/htdocs/master.inc.php
index 3008884a59e..3505a3b13fa 100644
--- a/htdocs/master.inc.php
+++ b/htdocs/master.inc.php
@@ -64,15 +64,17 @@ $conf->file->main_authentication		= empty($dolibarr_main_authentication)?'':$dol
 $conf->file->main_force_https			= empty($dolibarr_main_force_https)?'':$dolibarr_main_force_https;			// Force https
 $conf->file->strict_mode 				= empty($dolibarr_strict_mode)?'':$dolibarr_strict_mode;					// Force php strict mode (for debug)
 $conf->file->cookie_cryptkey			= empty($dolibarr_main_cookie_cryptkey)?'':$dolibarr_main_cookie_cryptkey;	// Cookie cryptkey
-$conf->file->dol_document_root			= array('main' => DOL_DOCUMENT_ROOT);										// Define array of document root directories
+$conf->file->dol_document_root			= array('main' => (string) DOL_DOCUMENT_ROOT);								// Define array of document root directories ('/home/htdocs')
+$conf->file->dol_url_root				= array('main' => (string) DOL_URL_ROOT);									// Define array of url root path ('' or '/dolibarr')
 if (! empty($dolibarr_main_document_root_alt))
 {
 	// dolibarr_main_document_root_alt can contains several directories
 	$values=preg_split('/[;,]/',$dolibarr_main_document_root_alt);
-	foreach($values as $value)
-	{
-		$conf->file->dol_document_root['alt']=$value;
-	}
+	$i=0;
+	foreach($values as $value) $conf->file->dol_document_root['alt'.($i++)]=(string) $value;
+	$values=preg_split('/[;,]/',$dolibarr_main_url_root_alt);
+	$i=0;
+	foreach($values as $value)	$conf->file->dol_url_root['alt'.($i++)]=(string) $value;
 }
 
 // Set properties specific to multicompany
diff --git a/htdocs/support/inc.php b/htdocs/support/inc.php
index 10edaf91f96..921a64963bf 100644
--- a/htdocs/support/inc.php
+++ b/htdocs/support/inc.php
@@ -119,10 +119,6 @@ define('MAIN_DB_PREFIX',(isset($dolibarr_main_db_prefix)?$dolibarr_main_db_prefi
 
 define('DOL_CLASS_PATH', 'class/');                             // Filsystem path to class dir
 define('DOL_DATA_ROOT',(isset($dolibarr_main_data_root)?$dolibarr_main_data_root:''));
-if (! empty($dolibarr_main_document_root_alt))
-{
-    define('DOL_DOCUMENT_ROOT_ALT', $dolibarr_main_document_root_alt);	// Filesystem paths to alternate core php (alternate htdocs)
-}
 define('DOL_MAIN_URL_ROOT', (isset($dolibarr_main_url_root)?$dolibarr_main_url_root:''));           // URL relative root
 $uri=preg_replace('/^http(s?):\/\//i','',constant('DOL_MAIN_URL_ROOT'));  // $uri contains url without http*
 $suburi = strstr($uri, '/');       // $suburi contains url without domain
diff --git a/test/phpunit/CoreTest.php b/test/phpunit/CoreTest.php
index a59308f4628..fe43d3735f8 100755
--- a/test/phpunit/CoreTest.php
+++ b/test/phpunit/CoreTest.php
@@ -203,8 +203,6 @@ class CoreTest extends PHPUnit_Framework_TestCase
 
 		print __METHOD__." DOL_MAIN_URL_ROOT=".DOL_MAIN_URL_ROOT."\n";
 		print __METHOD__." DOL_URL_ROOT=".DOL_URL_ROOT."\n";
-        print __METHOD__." DOL_MAIN_URL_ROOT_ALT=".DOL_MAIN_URL_ROOT_ALT."\n";
-		print __METHOD__." DOL_URL_ROOT_ALT=".DOL_URL_ROOT_ALT."\n";
 		$this->assertEquals(DOL_URL_ROOT,$expectedresult);
 
 		return true;
diff --git a/test/phpunit/FactureTestRounding.php b/test/phpunit/FactureTestRounding.php
index 446b6893ae0..b90f67171d2 100644
--- a/test/phpunit/FactureTestRounding.php
+++ b/test/phpunit/FactureTestRounding.php
@@ -130,6 +130,8 @@ class FactureTestRounding extends PHPUnit_Framework_TestCase
         $langs=$this->savlangs;
         $db=$this->savdb;
 
+		$conf->global->MAIN_ROUNDOFTOTAL_NOT_TOTALOFROUND=0;
+
         $localobject=new Facture($this->savdb);
         $localobject->initAsSpecimen();
         $localobject->lines=array();
@@ -171,6 +173,8 @@ class FactureTestRounding extends PHPUnit_Framework_TestCase
         $langs=$this->savlangs;
         $db=$this->savdb;
 
+        $conf->global->MAIN_ROUNDOFTOTAL_NOT_TOTALOFROUND=0;
+
         $localobject=new Facture($this->savdb);
         $localobject->initAsSpecimen();
         $localobject->lines=array();
@@ -210,7 +214,8 @@ class FactureTestRounding extends PHPUnit_Framework_TestCase
     	$db=$this->savdb;
 
     	// With option MAIN_ROUNDOFTOTAL_NOT_TOTALOFROUND = 0
-    	$conf->global->MAIN_ROUNDOFTOTAL_NOT_TOTALOFROUND=0;
+    	$conf->global->MAIN_ROUNDOFTOTAL_NOT_TOTALOFROUND=0;
+
     	$localobject1a=new Facture($this->savdb);
     	$localobject1a->initAsSpecimen('nolines');
     	$facid=$localobject1a->create($user);
@@ -221,7 +226,8 @@ class FactureTestRounding extends PHPUnit_Framework_TestCase
     	$this->assertEquals(115.43, $localobject1a->total_ttc);
 
     	// With option MAIN_ROUNDOFTOTAL_NOT_TOTALOFROUND = 1
-    	$conf->global->MAIN_ROUNDOFTOTAL_NOT_TOTALOFROUND=1;
+    	$conf->global->MAIN_ROUNDOFTOTAL_NOT_TOTALOFROUND=1;
+
     	$localobject1b=new Facture($this->savdb);
     	$localobject1b->initAsSpecimen('nolines');
     	$facid=$localobject1b->create($user);
@@ -249,7 +255,8 @@ class FactureTestRounding extends PHPUnit_Framework_TestCase
     	$db=$this->savdb;
 
     	// With option MAIN_ROUNDOFTOTAL_NOT_TOTALOFROUND = 0
-    	$conf->global->MAIN_ROUNDOFTOTAL_NOT_TOTALOFROUND=0;
+    	$conf->global->MAIN_ROUNDOFTOTAL_NOT_TOTALOFROUND=0;
+
     	$localobject2=new Facture($this->savdb);
     	$localobject2->initAsSpecimen('nolines');
     	$facid=$localobject2->create($user);
@@ -262,7 +269,8 @@ class FactureTestRounding extends PHPUnit_Framework_TestCase
     	$this->assertEquals(115.44, $localobject2->total_ttc);
 
     	// With option MAIN_ROUNDOFTOTAL_NOT_TOTALOFROUND = 1
-    	$conf->global->MAIN_ROUNDOFTOTAL_NOT_TOTALOFROUND=1;
+    	$conf->global->MAIN_ROUNDOFTOTAL_NOT_TOTALOFROUND=1;
+
     	$localobject2=new Facture($this->savdb);
     	$localobject2->initAsSpecimen('nolines');
     	$facid=$localobject2->create($user);
@@ -292,7 +300,8 @@ class FactureTestRounding extends PHPUnit_Framework_TestCase
     	$db=$this->savdb;
 
     	// With option MAIN_ROUNDOFTOTAL_NOT_TOTALOFROUND = 0
-    	$conf->global->MAIN_ROUNDOFTOTAL_NOT_TOTALOFROUND=0;
+    	$conf->global->MAIN_ROUNDOFTOTAL_NOT_TOTALOFROUND=0;
+
     	$localobject3=new Facture($this->savdb);
     	$localobject3->initAsSpecimen('nolines');
     	$facid=$localobject3->create($user);
@@ -307,7 +316,8 @@ class FactureTestRounding extends PHPUnit_Framework_TestCase
     	$this->assertEquals(115.45, $localobject3->total_ttc);
 
     	// With option MAIN_ROUNDOFTOTAL_NOT_TOTALOFROUND = 1
-    	$conf->global->MAIN_ROUNDOFTOTAL_NOT_TOTALOFROUND=1;
+    	$conf->global->MAIN_ROUNDOFTOTAL_NOT_TOTALOFROUND=1;
+
     	$localobject3=new Facture($this->savdb);
     	$localobject3->initAsSpecimen('nolines');
     	$facid=$localobject3->create($user);
diff --git a/test/phpunit/PricesTest.php b/test/phpunit/PricesTest.php
index ecea4b517e1..57a95b0b40a 100755
--- a/test/phpunit/PricesTest.php
+++ b/test/phpunit/PricesTest.php
@@ -200,6 +200,8 @@ class PricesTest extends PHPUnit_Framework_TestCase
 		$this->savlangs=$langs;
 		$this->savdb=$db;
 
+		$conf->global->MAIN_ROUNDOFTOTAL_NOT_TOTALOFROUND=0;
+
 		// Two lines of 1.24 give 2.48 HT and 2.72 TTC with standard vat rounding mode
 		$localobject=new Facture($this->savdb);
         $localobject->initAsSpecimen('nolines');