<input type="hidden" name="mode" value="<?php p($form->mode) ?>" />
<input type="submit" value="<?php print_string("savechanges") ?>" />
<!-- provide an additional button to edit questions -->
+<?php if ($form->instance) { ?>
<input type="hidden" name="redirecturl" value="<?php p("$CFG->wwwroot/mod/quiz/edit.php?quizid=$form->instance") ?>" />
<input type="submit" name="redirect" value="<?php print_string('saveandedit', 'quiz') ?>" />
+<?php } ?>
<input type="submit" name="cancel" value="<?php print_string("cancel") ?>" />
</center>
</form>