problem with wp_list_pages

Hello everybody! I really need help on this one!

I want menu to show in horizontal position and it is working fine in Firefox but in Internet Explorer it’s a disaster…
check https://www.mizarstvo-nose.si/ to see what’s the catch…

in header it’s normal php wp_list_pages include:
<div class=”navigation”>
<?php wp_list_pages(‘title_li=&sort_column=menu_order’); ?>
</div>

the catch is that if I enter normal links in <div class=”navigation”> instead of <?php… IE shows correct…

Any idea would be really appreciated!

Thanks a lot!!