function SetSize(obj, width, height) { myImage = new Image(); myImage.src = obj.src; if (myImage.width>0 && myImage.height>0) { var rate = 1; if (myImage.width>width || myImage.height>height) { if (width/myImage.width<height/myImage.height) { rate = width/myImage.width; } else { rate = height/myImage.height; } } if (window.navigator.appName == "Microsoft Internet Explorer") { obj.style.zoom = rate; } else { obj.width = myImage.width*rate; obj.height = myImage.height*rate; } } } 用法: <img src="img/offer/41936519.jpg" border="0" style="zoom: 0.1" onload="SetSize(this, 80, 60)"/>