+ if (!is_date($_POST['begin'])) {
+ $input_error = 1;
+ display_error(_("The entered date is invalid."));
+ set_focus('begin');
+ }
+ if (!is_date($_POST['end'])) {
+ $input_error = 1;
+ display_error(_("The entered date is invalid."));
+ set_focus('end');
+ }
+ if (isset($_POST['last_sent']) && !is_date($_POST['last_sent'])) {
+ $input_error = 1;
+ display_error(_("The entered date is invalid."));
+ set_focus('last_sent');
+ }