Hi, this is part of the text about the JS_NOCLOSE.E virus copied from click here to get the rest of the info click on the link.
Upon execution, it opens several Internet browser windows to pre-defined URLs that are listed in its body. The URL can be executed in a separate browser window or inside its own window. This way, it could execute several malicious script files in a user?s system without the user's knowledge.
It is not dangerous and destructive by itself, but its behavior can causes delays and can become annoying to users because of the traffic it produces. It also performs certain hidden functions and makes opened browser windows difficult to control or close.
You don't say which av sware you use, but most have info pages on virus' on their sites, and if their sware cannot remove it, they will often tell you how to do it manually.
Hope this helps.