"I checked out Go Marcellus Shale in a few different browsers, but didn't see any errors pop up. My guess is that member has an overly restrictive web-security program that doesn't like something on the network. JS refers to javascript, and an Iframe is basically just HTML that pulls in another website and displays it. There may be a specific ad script that is causing this issue. I'd recommend your member update any security software to the latest version and perhaps make an exception for your network. "