Gathering 5 on 5 Data From The NHL

I am attempting a rather large sabermetrics and hockey project where I attempt a novel method top look at +/- ratings. In order to do this, I need to know the amount of icetime players have with and against each other in 5 on 5 situations. Parsing this information from NHL boxscores is a non-trivial task. I found this tool to do it. It is a greasemonkey script that runs with Mozilla