That one is fairly common and the scammers substitute any of the major banks. I get at least one a month. Usually for a bank that I haven't used in 10 years. I've gotten them about Paypal and Billpay services as well. I always send them to both the bank and my isp when I get them.
I almost fell for that "you have a virus" popup. I did click on it, but my virus scanner caught it before it could infect my system (I use avg antivirus from grisoft.com). Now when I see that, I contact the webmaster for whatever page I was viewing and tell them that they are being reported to one or more of the big anti-virus companies for spreading malware. I don't see that ad as often anymore.
Recently, I got an email that said that I had won 1,000,000 quid (I don't know how to make the symbol for british currency) in a UK lottery. The email said that the drawing was based on a random sampling of email addresses and no entry had been required, just an email address. Everything was spelled right, and even had proper grammar. The only thing that I noticed was they used American english for some of the words like center instead of centre. For a UK lottery, I would have expected them to use Queen's english spellings.
Never, ever click on a link in an email, even if you know and trust who sent it. Copy the link to notepad first and verify that it really is going where you expect it to. If it comes out as an IP address, chances are that it is not your bank. Always use your normal method of contacting your bank and not the link you were given in an email. That way you are less likely to be opening your system to invasion by someone in Kazakstan or Outer Mongolia or even your 14 year old neighbor. And keep your virus scanner as up to date as possible. Disconnect from the web when you are not using it. There is no reason to "go online" if all you are going to be doing is playing solitaire or writing a book.