Bicubic Scaling for Images? :Internet Explorer 6 & 7

Internet Explorer 6 & 7 do not resample images if the display dimensions differ from the image's actual dimensions. As a result, such images are rendered blockier than in other browsers.

Try IE7's bicubic interpolation mode using the follow line of CSS:

-ms-interpolation-mode: bicubic; 

demo: http://jsbin.com/ubuxoq/4/edit