关于clientWidth、offsetWidth、clientHeight、offsetHeight的测试比较

GetClientWidth(); GetClientHeight();

GetOffsetWidth(); GetOffsetHeight();

IE6.0、FF1.06+：
clientWidth = width + padding = 300+10×2 = 320
clientHeight = height + padding = 200+10×2 = 220
offsetWidth = width + padding + border = 300+10×2+10×2= 340
offsetHeight = height + padding + border = 200+10×2+10×2 = 240

IE5.0/5.5：
clientWidth = width - border = 300-10×2 = 280
clientHeight = height - border = 200-10×2 = 180
offsetWidth = width = 300
offsetHeight = height = 200