Full page zooming with typeface.js or cufon

Is there a way to "mipmap" with typeface.js or cufon, such that a full-page zoom in a browser will not destroy the crispness of the rendered text? I could not find much information about this.

For an example, on this page http://thatguynamedandy.com开发者_运维百科/blog/text-replacement-comparison zooming blurs Cufon and typeface.js, and sIFR doesn't zoom with the page at all (being a Flash solution).

Thanks in advance.

P.S. Here is a description of mipmapping http://en.wikipedia.org/wiki/Mipmap. It is normally used to make textures blurrier for performance in 3-d games, but I want to do the reverse (have higher res loaded for zoom)