@ -508,7 +508,7 @@ function rcube_webmail()
return false;
// let the browser handle this click (shift/ctrl usually opens the link in a new window/tab)
if ((obj && obj.href && obj.href.indexOf(location.href) < 0) && rcube_event.get_modifier(event)) {
if ((obj && obj.href && String(obj.href).indexOf(location.href) < 0) && rcube_event.get_modifier(event)) {
return true;
}