The salary count is now updating in the top tab of this web browser, accurate even when another web tab is above this one.
This is what you are earing in real-time based on an anual salary of $50k.
$ 3846.153846153846 /month
$ 961.5384615384615 /week
$ 192.30769230769232 /day
$ 24.03846153846154 /hour
$ 0.40064102564102566 /minute
$ 0.00667735042735/second
Or a penny every 1.4976 seconds

A simple javascript timer animation is not a big technical hurdle... whats tough is trying to track acurate time intervals with the inconsistencies of browsers, hardware, and image sizes.