Target Constants

OPEN_CURRENT_BUFFER
This target means to open the URL in the current buffer.
OPEN_NEW_BUFFER
This target means to open the URL in a new buffer, and to switch to that buffer.
OPEN_NEW_BUFFER_BACKGROUND
This target means to open the URL in a new buffer, but not to switch to that buffer.
OPEN_NEW_WINDOW
This target means to open the URL in a new buffer, in a new window.
FOLLOW_DEFAULT
This is like OPEN_CURRENT_BUFFER, except that for hyperlinks, the intent of the hyperlink itself will be obeyed.
FOLLOW_CURRENT_FRAME
In an HTML Frameset document, this target represents the focused frame. When not in a Frameset, it behaves like OPEN_CURRENT_BUFFER.