usually they are positioned around the borders of an html page, often in the corners -- here is a web site that places them in the middle. using them makes this location and immediate sell, I found.
to see what I mean, navigate to some product, add a sample(s) to your cart and then checkout. the "click here for printable receipt" is in the middle, and in the new window, "print this page" and "close window" are centrally located too. -- [email protected] http://www.kernel-panic.org/cgi-bin/mailman/listinfo/kplug-list
