Does IE 6.0 not handle .png's? .png's are the only way I can get clean rendering. .gif's can't handle it with good resolution, apparently because they don't possess a native alpha (transparency) layer.
Oh, wow, you give me far too much credit. That equation is Cavediver's contribution. Of course, in all modesty I must confess that once I saw the equation I immediately recognized it as a 12-dimensional string theory equation that represents how squigglies beat parentheses.