Hope this doesn't veer off topic...

I'm experimenting with making my site more accessible for
vision-impaired people by using ems in my CSS style sheet for image
sizes as described at http://sperling.com/examples/zoom/

The problem is calculating the ems. I have to open the image in
Photoshop, use Image Size to figure what the height and width pixels
would be at a slightly smaller size, then go to an online site that lets
me convert pixels to ems. What a hassle. Shorter path?

- Keith Purtell



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