[Javascript] shortcuts

[list at tridemail.de (Michael Borchers)]

i want to offer a navigation via shotcuts.
i did it this way so far:

<a href="#" onfocus="javascript:redirectByShortcut('<?php echo 
CONTACTS_FILENAME; ?>?select=1');" accesskey="c"></a>

function:
function redirectByShortcut(redirectUrl)
{
 top.location.href = redirectUrl;
}

works fine.
but isn't it possible and even better to do it by hidden input fields?!!