You're correct Kenn in that multiple classes can be done by placing a space between them. The problem, however, is that not all browsers will render it the same way (one reference is with IE 6 and IE 7); I'm referring to cross-variables and inheritance. Since I did not know what was contained in "satellite_postbit" the safer route was to use two <div> tags.
My statement was a bit misleading so I thank you for the clarification. Ohh and thank your for clicking "Install".