Looking at the web stats, I noticed, that quite a lot of people find something relevant to "environmental" on my pages. As I was not aware of anything related here, I tried that in Google. To my surprise all results are in demo for Ukolovnik.
Well I do not want to add any anti spam technique to this simple tool as it will be usually password protected. And this is exactly what I did with demo for now. So if you want to use it, you need to login with user demo and password demo. I hope this will prevent spammers from using this demo, otherwise I would probably have to close it.