I just changed my header from a background to an image, as that seemed to be the easiest way to link the entire header to my main page (after a whole lot of trial and error with other methods). The one problem is that the image is now overlapping my sidebar instead of the other way around. It's also overlapping some of my menu bar, but it's a part that I can live with or possibly fix myself.
Here's my site with the header going over the sidebar. How do I get it back under the sidebar like it was before? And now that I think of it, is the whoe header being linked going to cause problems with the various links and buttons in the area where the sidebar overlaps it?