I'm trying to figure out which doctype i should use. Most sites I see selling products similar to mine are using: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/1999/REC-html401-19991224/loose.dtd"> This was from newegg.com I thought xhtml was the new standard. Why would so many sites still be using html? Maybe there is some reason I'm not aware of? Or maybe they just haven't got around to updating their code? Or maybe there are compatibility issues with older browsers? Hopefully someone can shed some light on this. It would be much appreciated.