Would like to put my logo as a watermark on background of my pages similar to the one on the following page
(ex: http://losangeles.angels.mlb.com/index.jsp?c_id=ana)
Thanks in advance for all the help!

You would use styling, something like this:

body {
background-image: url(image.jpg);
}

They have that as the background on the whole page, but then cover it up with all of their divisions. Seems a header with the logo would have been just as effective and quicker to load...

But the code Cary gave would certainly do that.

Melanie