Primary Links Menu

I am having a problem with a site I am putting up using Stasis. Originally the Primary Links were in the header area, on the bar supplied in the header-bg.png file. For some reason they are now down below the header, above the content. I find no setting for this, and cannot determine how this happened.

The site is http://cardioprim.com and I modified the CSS to make it 960 pixels wide, but that is not the problem (I did that long before the problem appeared). Even when I restore the original template files, the problem persists.

Any suggestions would be much appreciated. Thank you!