Just a suggestion... i think it would scale better than the current column design.

- The LOG is pretty useless because so many new lines are written all the time, making it taller would make it useful.
- It would be nice to have settings for what to show in the LOG... Currently its a mess... but it COULD BE very useful !
- The Calculators are currently too large with too much space around them
- The Graph is too narrow, widening it will make it better for looking at long periods.
- The Sell/Buy is currently hidden by the footer/log Making more room for it will make it better and provide better overview.

btw:
- Values typed into the calculator should be stored in Cookies !!

http://i.imgur.com/wUbypqa.jpg