Here is the solution you’re looking for:
http://ww.wp.xz.cn/extend/plugins/wp-links/
External link handler that automatically adds target=”_blank” to all your external links while leaving internals alone.
You can try WP links which makes the target=”_blank” attribute parse sitewide on all external urls
WP Links
Just install WP Links @bhavadasa
A few clicks and you won’t have to worry about it.
http://ww.wp.xz.cn/extend/plugins/wp-links/
Or you can install WP links the external link handler automatically parses target_blank on all external links.
http://ww.wp.xz.cn/extend/plugins/wp-links/
