Matthew - the updates to javascript over the past years "broke" the original calculators.
In the meantime, other calculators that are better showed up around the internet. We now have links to those. Looking around, I don't see them! They are here somewhere and as soon as I find them, I'll make their location accessible with a link.
Lots of housekeeping to do still on the new site. Just give us a little slack for the next week.
Are there any missing types of calculators you wish we link to here? If so, we'll do our best to find good ones and post.
Thanks!
