image not showing in background of page menu bar

Hello,
Ive been trying to add this image in the page menu bar behind the buttons, but for some reason it isnt showing up. Ive copied this code from one of my other sites also using this theme whch works:

ul.rMenu {
height: 100px;
background: url(/wp-content/themes/atahualpa/images/header123.png);
padding-left: 570px;
background-color: none;

Its driving me nuts because i dont know what else it can be. The path name looks right. Can anyone help? Thanks a bunch.
www.barasia.judyly.com