The page shouldn't load until you issue the NAVIGATE command. Can you load the page manually? Try to break it down into two buttons that load the page, and then analyze the page. The problem with trying to pull the data off of someone's web site is that it's different a lot of the time... you might have to just experiment with it.
See if you can figure out why the page is loading twice (by examining your code) and that might help you. I loaded the page fine in my browser and it didn't look like there was anything odd in it. Perhaps its just a quirk on your system.
This is why I really like MOBILE versions of web sites - they load quicker and easier, and without all kinds of crap (graphics, Flash animations, etc.). Is there a mobile version of this page you can use? If you're just looking for the PA lottery results, how about:
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