How do I get rid of the menu_open.gif in header template?

[douffle]

I am creating a navbar consisting of buttons rather than the default vb navbar. The navbar is working fine but the menu_open.gif is appearing below the search and quicklink buttons and causes the navbar to gain height. How do I get rid of these arrows?

I changed the following code:

<script type="text/javascript"> vbmenu_register("navbar_search" ,1); </script>

to this

<script type="text/javascript"> vbmenu_register("navbar_search" ,true); </script>

but that didn't work at all.

Any suggestions please?

Thanks