At the time, IE has a "view source" button, but it's not very platform aware. You get a Notepad doc. The server is running Unix with files where lines break on "\n" and I'm on Windows, which needs "\r", so the source is one single long line of html.
I look through the source thoroughly: what is in their html that I don't know about that lets them make things move around? All the html tags are ones I know. All the content is text I can see on the page.
The only mysterious bit is these " "s. I've never seen those before and don't know what they are. They appear on sites with moving menus. They must be related.
(For six months, I believed the effect of dhtml was achieved through magic incantations of what turned out to be html entities. A bit later I found WebMonkey tutorials and this turned into a whole career.)