diff --git a/htdocs/core/lib/functions.lib.php b/htdocs/core/lib/functions.lib.php
index de31fe2d0b9..3a4021653cc 100644
--- a/htdocs/core/lib/functions.lib.php
+++ b/htdocs/core/lib/functions.lib.php
@@ -333,7 +333,7 @@ function dol_include_once($relpath, $classname='')
  *	Return path of url or filesystem. Return alternate root if exists
  *
  * 	@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)
+ *  @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 using same host that current url), 3=Used for an URL path (output full path using host defined into $dolibarr_main_url_root of conf file)
  *  @return string				Full filesystem path (if mode=0), Full url path (if mode=1)
  */
 function dol_buildpath($path, $type=0)
@@ -364,6 +364,8 @@ function dol_buildpath($path, $type=0)
 		$res='';
 		if ($type == 1) $res = DOL_URL_ROOT.'/'.$path;			// Standard value
 		if ($type == 2) $res = DOL_MAIN_URL_ROOT.'/'.$path;		// Standard value
+		if ($type == 3) $res = DOL_URL_ROOT.'/'.$path;
+		
 		foreach ($conf->file->dol_document_root as $key => $dirroot)	// ex: array(["main"]=>"/home/main/htdocs", ["alt0"]=>"/home/dirmod/htdocs", ...)
 		{
 			if ($key == 'main') continue;
@@ -379,7 +381,18 @@ function dol_buildpath($path, $type=0)
 					}
 					if ($type == 2)
 					{
-						$res=(preg_match('/^http/i',$conf->file->dol_url_root[$key])?'':DOL_MAIN_URL_ROOT).$conf->file->dol_url_root[$key].'/'.$path;
+					    $res=(preg_match('/^http/i',$conf->file->dol_url_root[$key])?'':DOL_MAIN_URL_ROOT).$conf->file->dol_url_root[$key].'/'.$path;
+					}
+					if ($type == 3)
+					{
+					    global $dolibarr_main_url_root;
+					    
+					    // Define $urlwithroot
+					    $urlwithouturlroot=preg_replace('/'.preg_quote(DOL_URL_ROOT,'/').'$/i','',trim($dolibarr_main_url_root));
+					    $urlwithroot=$urlwithouturlroot.DOL_URL_ROOT;		// This is to use external domain name found into config file
+					    //$urlwithroot=DOL_MAIN_URL_ROOT;					// This is to use same domain name than current
+					    					
+					    $res=(preg_match('/^http/i',$conf->file->dol_url_root[$key])?'':$urlwithroot).$conf->file->dol_url_root[$key].'/'.$path;
 					}
 					break;
 				}