Positioning navigation menu / bar

Hello !
As you can see betweeen the header and the nav. there is a big gap.
Do you know how i can position the nav. menu higher ?

meaning?
as you can see the image/header is a lot shorter
there is a gap of a few "lines"
http://greekpop.asiat-world.com/

Hi,

Add this to your AP > Modules > JS managment and mark all pages:

Code:

$(function(){
$('.maintitle').hide();
$('.maintitle').next('br').hide();
$('.maintitle').prev('br').hide();
});

After::

i tried it but had no effect

thank you for your help.