У вашего броузера проблема в совместимости с HTML5
I discovered this while digging around for other unrelated stuff, and I ended up making a simple program that does just this!
Here is the link
https://mega.co.nz/#!DxlUTBZa!xwoDEeVpUaem6Gvpzvqc1QsyBBCXhTiJHaK8sZ8FQ3Q
And here is a virus total link. It has some false positives, but for what it is I would expect this.
If you need more convincing, all it breaks down to is a simple batch file that deletes the hitmanpro key and shows you a few words.
https://www.virustotal.com/en/file/d4b4e3bf7439f2989b4055d6d9a38ffbc4a182f68809abc930d449744f583484/analysis/1431229337/
And if you're still worried, you can just do what I showed you in the video instead.