diff --git a/htdocs/lib/functions.inc.php b/htdocs/lib/functions.inc.php
index 16bd4d52ceb..b8df1538138 100644
--- a/htdocs/lib/functions.inc.php
+++ b/htdocs/lib/functions.inc.php
@@ -173,6 +173,17 @@ Function img_alerte($alt = "Alerte")
 }
 
 
+Function img_next($alt = "Suivant")
+{
+  return '<img src="'.DOL_URL_ROOT.'/theme/'.MAIN_THEME.'/img/next.png" border="0" alt="'.$alt.'" title="'.$alt.'">';
+}
+
+Function img_previous($alt = "Précédent")
+{
+  return '<img src="'.DOL_URL_ROOT.'/theme/'.MAIN_THEME.'/img/previous.png" border="0" alt="'.$alt.'" title="'.$alt.'">';
+}
+
+
 function loginFunction()
 {
   /**