How to get "Iframe" open in new window

I saw some sites having affiliate offer auto opening in new window.

I tried everything to get this working. I know that with Iframes its impossible to open link from another domain in new browser window.

Anyone have any other solution to this?

I am using wordpress sites.

Try the code here (it's at the bottom where the OP states that he has solved it):

Also Google:
iframe open in new window
wordpress iframe open in new window

target="_blank"

should do the work.