diff --git a/htdocs/lib/functions.inc.php3 b/htdocs/lib/functions.inc.php3
index a631ba61858..ae85b99cd55 100644
--- a/htdocs/lib/functions.inc.php3
+++ b/htdocs/lib/functions.inc.php3
@@ -25,6 +25,21 @@
 $yn[0] = "non";
 $yn[1] = "oui";
 
+function loginFunction()
+{
+  /**
+   * Change the HTML output so that it fits to your
+   * application.     */
+  print '<p>Dolibarr Authentification';
+  echo "<form method=\"post\" action=\"" . $_SERVER['PHP_SELF'] . "\">";
+  print '<table><tr>';
+  print '<td>Login:</td><td><input type="text" name="username"></td></tr>';;
+  print '<tr><td>Password:</td><td><input type="password" name="password"></td></tr>';
+  echo '<tr><td colspan="2" align="center"><input value="Login" type="submit"></td></tr>';
+  echo "</table></form></p>";
+}
+
+
 function accessforbidden()
 {
   llxHeader();