virus JS:HideMe-B (Trj)

i am not the webmaster, we cannot get in touch with him. I made some changes to our site, and right after that site was blocked from my computer saying we had JS:HideMe-B (Trj). Other people see the site but pop ups come up and it made another persons computer crash. Is there something in WordPress? I’m only a quick editor and not familiar with anything technical. Help!!