Display random posts from featured category slideshow

Hi fellow wordpressers!

I am trying to solve an issue with my featured category slideshow in wordpress. I want the featured to show five posts from the “featured” category (in the slideshow) in random order.

This is the code that I have that displays five posts but always in the same order…

<?php
	$tmp_query = $wp_query;
	query_posts('showposts=5&cat=' . get_cat_ID(dp_settings('featured')));	if (have_posts()) :
	while (have_posts()) : the_post();
	?>

I want to add something that makes the five posts show in a totally random order…

Hope you can help me!