Valid targets are:"_self": Opens the linked document in the same frame as it was clicked (this is default).
"_blank": Opens the linked document in a new window or tab (this will not work if pop-ups are being blocked by the user, in which case you can use the clickable_* functions instead).
"_parent": Opens the linked document in the parent frame.
"_top": Opens the linked document in the full body of the window.
|url||The URL (website address) to link to.|
|target||This is the target area to open the URL in.|
url_open_ext( 'http://yoyogames.com', '_blank');
This would open the YoYo Games homepage in a new window.