removing dependency on .swf file for sound

[DerellLicht]

This is not actually a new issue, it is more of me informing jtnimoy of my version of this program, in the interest of openness.
I was looking at Thaoh Myrdania's version of this program, which added multi-colored balls; both this version, and Thaoh's version, had a problem with the .swf file which is used for the sounds... if sound was enabled on most modern browsers, the program would immediately hang.

My version fixes that problem, and also fixes a problem with Thaoh's version, in that if 'growing balls' was turned off, they stopped operating properly.

anyway, my version with these fixes, is available here:
https://github.com/DerellLicht/BallDroppings
It is released under the same license as your version; in fact, I include your license file in the distribution.
If you ever have a chance to review this in the future, if you have any issues with my version, I welcome your imputs!