OMG! This person is totally ripping off my Javascript Error Logger 
There is no chance that two people on the Web would come up with the same idea, using the same technique, that many others have done before…wait a minute. I’m getting Johnny Cockran; I might need some help here 
Either way, I think the one I wrote for work is better 
You can have a look at it here. Yeeeeesss! I have a job! Until they read this… At least I’ll have more time to watch my fish swim around. You know, fish are pretty interesting if you…nevermind.
Lumberjack, The Cross-Platform Javascript Logger And Console
Do you write javascript? Are you sick of using alerts to find out what is happening in your code? Then Lumberjack is for you! It helps beat down the nightmare that is cross-browser javascript debugging.