Firefox baby [and if this web designer had his way - IE6-7 would forever cease to function]!
You got them to function?!
But anyway, I am surprised with all the firefox users. It's wayyy too slow and tacky for me. I use Safari and Google Chrome, but my favorite is Safari. It's simple and get's the job done fast. The buttons and menu bars don't distract from the content (like how a picture frame should function). Back in the day, I used to be a Huge OmniWeb fan. It was the fastest thing out there until the newer safari updates.