IE8, Win7: font-size: 16px, line-height: 18px
IE7, Vista: font-size: 16px, line-height: 18px
Chrome 15, Mac: font-size: 16px, line-height: 18px
Chrome 17, Mac: font-size: 16px, line-height: 18px
Safari 5.1, Mac: font-size: 16px, line-height: 18px
iPad 2, iOS5: font-size: 16px, line-height: 19px
iPad 1, iOS4: font-size: 16px, line-height: 19px
iPhone 4s, iOS5: font-size: 26px, line-height: 30px
iPhone 3Gs, iOS4: font-size: 16px, line-height: 19px
FF 7.0.1, Mac: font-size: 16px, line-height: 21px
FF 8b, Mac: font-size: 16px, line-height: 21px
FF 3.6 Mac: font-size: 16px, line-height: 16px