- fixed letter-spacing with relative units for Internet Explorer - refactored getFontSizeInPixels
- fixed letter-spacing with relative units for Internet Explorer
- refactored getFontSizeInPixels

sorccu/cufon,dmccabe/cufon,bradparks/cufon,sorccu/cufon,dmccabe/cufon,dmccabe/cufon,sorccu/cufon,bradparks/cufon,bradparks/cufon