PHP Escape HTML Characters

I am playing with the K2 word-press theme and I can’t get the wp_list_pages() in word-press to escape it’s html.

here is what I’m trying to do.

<?php htmlentities(wp_list_pages(), ENT_QUOTES); ?>

if you look at the page source at http://gfxcomplex.com/blog at line 125 you will see that the last var in the flashVar is not escaping the html and the quotes are braking the string.