On Sep 17, 7:08 am, J.J. O'Shea wrote:

FireFox provides control over how it handles PDF documents in
Windows. I don't have Firefox installed on my iMac. But the following
sequence of instructions works with Windows. Try it out and let me
know if it works with OSX.

In FireFox
Click on Tools
Click on Options
Click on the Applications Tab
Select a Content Type. In this case an Adobe Acrobat Forms
document.
On the right side you will see a downward pointing Arrow. Click on
it.
You will see several options Like:
Always Ask
Save File
Adobe Acrobat
Use Other
Use Other gives you a large selection of other programs you can use to
handle a particular file type.

To do what you want I suggest the "Always Ask" option.

Howard