Thanks, AJ. I forgot to define the location variable. Great catch.
Also, I put up a topic about the map "overlay" (or talk bubble) into which I could put HTML, like the address, an image, etc. Although, I don't think I was as specific as I should have been. Namely, I didn't call it an overlay. But, the reason I didn't address it in this thread was because I wanted to establish a new topic just in case someone else needed that specific thing. So far, however, I haven't gotten a response.
I did some research on my own, but I couldn't find anything specific to the JQuery framework. I tried to use the Gmarker object, but I screwed it up. I guess because I didn't know how to implement it in JQuery.
Any advice? If we can work this out, then I will post the answer in the aforementioned thread on that topic.