Are you kidding? Developing for a crappy browser first is the perfect recipe for an unmaintainable mess of code, since you will be relying on hacks to get IE to

Are you kidding? Developing for a crappy browser first is the perfect recipe for an unmaintainable mess of code, since you will be relying on hacks to get IE to do render correctly, then adding hacks again for every browser that does the right thing. First develop for a standards-compliant browser, then add (conditional) hacks to support IE. The other way around is just silly.