sjbmaine on "Custom field outside loop displayed as a hyperlink"

I have a custom field called website. I am displaying this in the sidebar, so it's called from outside the loop. The code below displays the url (ex: www.mysite.com). What I cannot figure out how to do is to turn this into a hyperlink.

<?php
global $wp_query;
$postid = $wp_query->post->ID;
echo get_post_meta($postid, 'website', true);
?>

Susan