Thank you for the help, Nancy O. I have to assume that I need to make a Javascript page in order for this to work (the original page was just HTML). However, when I make a new Javascript document in DW, I only have access to the Code window. I cannot see the design or the split screen, nor can I preview the page in Firefox. Javascript is enabled on my computer, though it may need to be updated. Could this be causing some of the trouble?
I think I need to read more about Javascript before I put in any codes because I've never used it for web building - I've only ever used HTML.