From a PDF in a browser window - open links within in that PDF in a new window

Question

BACKGROUND SCENARIO:
Users view a PDF document within their browser window (default behavior at my organization).  Key point is, the PDF isn't being viewed in an Acrobat Reader window, it's being viewed within the browser window.
Within that PDF, are many links to intranet pages. And incidentally, this PDF happens to be a document that is updated frequently (More on this caveat in a moment)
EDIT: The end users are end users, smart people, but not necessarily super-sophisticated computer users.
MY QUESTION:
When a user clicks a link within the PDF, I want the new page to open in a new window, NOT in the same window that the PDF was being viewed in.
I've done a fair amount of homework:  The prevailing answer is to use Acrobat Pro's "LINK" feature to turn the hyperlink into a javascript command that opens the link in a new window, and to do this (a) MANUALLY, (b) ONE LINK AT A TIME, and (c) Repeat steps (a) and (b) EACH TIME the document gets updated.   (Back track now to my earlier caveat.. this is a frequently changing document with lots of links... Doing manually and repeating the whole process each time the document is updated is a lot of work.)
I believe there are some add-on products that make this easier too.
So my question is...  Other than add-ons, Is there another way?  a better way?  a more efficient way?  Or is there another way, on the way?
SOMEWHAT RELATED QUESTION:  (EDIT)
Another answer that would more or less satisfy me:  is there a way either from the calling HTML page, or from within the PDF document itself, to force the PDF to open within its own Acrobat Reader window, rather than within the browser window?  That would mostly dodge the issue, by opening linked pages in the browser anyway.
A little extra background information: The document also uses password protection (a management requirement), which is why opening the links in the same window is such a pain.  Back-keying back to the document after viewing the link requires re-typing the document password, a noted pain.  I'd accept a fix to that particular problem too, but I don't think there is one.  Either way, the new-window question is one I'd like to solve.  (FYI, I asked the password retype question separately over in the security forum, here:  http://forums.adobe.com/message/5055162#5055162).

Answer 1

You can't update the destination for a link using JavaScript, because there's no way to read the link's current action. While there is a setAction() function to create a new action on an existing link, there's no "getAction" function.
In terms of how a PDF file opens, nothing in the document or in the HTTP headers can influence whether the file is opened in the browser or on the desktop - that's a user preference. What you can do with scripting on the server is send HTTP content-disposition headers that define the PDF file as something the user should download and save, rather than something the browser should try to open.