Fix: Can not set option when using in nojs mode.

htdocs/admin/agenda_other.php

@@ -110,11 +110,11 @@ if ($conf->use_javascript_ajax)
 }
 else
 {
-	if($conf->global->AGENDA_USE_EVENT_TYPE == 0)
+	if (empty($conf->global->AGENDA_USE_EVENT_TYPE))
 	{
 		print '<a href="'.$_SERVER['PHP_SELF'].'?action=set_AGENDA_USE_EVENT_TYPE">'.img_picto($langs->trans("Disabled"),'off').'</a>';
 	}
-	else if($conf->global->BUSINESS_VISIBLE_TO_ALL_BY_DEFAULT == 1)
+	else
 	{
 		print '<a href="'.$_SERVER['PHP_SELF'].'?action=del_AGENDA_USE_EVENT_TYPE">'.img_picto($langs->trans("Enabled"),'on').'</a>';
 	}