Ouch, that's just as bad :P. One big rule you learn with experience as a webmaster to avoid opening things in a new window (/tab). There are some very detailed reasons to this. One being, it's damn annoying, and everyone should know that :P
To quote some short paragraphs from HTMLDog:
"The a tag allows you to open the link in a newly spawned window, rather than replacing the web page the user is on, which at first thought may sound like a good idea as it doesn't take the user away from your site.
There are a number of reasons why you shouldn't do this however.
From a usability point of view, this method breaks navigation. The most commonly used navigation tool on a browser is the "back" button. Opening a new window disables this function.
On a wider, more general usability point, users do not want new windows to be popping up all over the place. If they want to open a link in a new window then they can choose to do so themselves."