With IE9 i have noticed that any links that use target="_blank" and point to the same domain end up opening a new blank tab.
So if the page at www.mydomain.com/index.html contains a link to www.mydomain.com/anotherpage.html with target="_blank", clicking on it results in a new blank tab.
Links to other domains that use target="_blank" work as expected. That is, they open up in a new browser window.
What is the simplest change I can make to make this work as expected across all of the popular browsers? This wasn't a problem with IE8.
I'm running Win 7x64 and of course, IE9.