I suspect this is a hardware issue with your laptop and has nothing to do with the site. The on-board speakers on your laptop is faulty, the only way to check is to try plugging in headphones or speakers and see if the static is still there.
yeah i know what you mean, i have issues with some of the games here too with the static-y noise. it's this site and a few others, but it's only some of the games, and it's something to do with google chrome... at least on my end, i've also linked it to my pepflashplayer plug-in too. but for me it's been happening for about a week give or take a few days. ever since they had the advertisements on the pages.... which is the same for all the other sites, when i have an ad i get static, the games on this site that don't have ads like gemcraft labyrinth, i don't get static on those games but others like spectromancer or obliterate everything 2 i do indeed get static.. and trust me it's not my speakers/headset