Alert user when a SALSA has unsaved or unpublished changes before closing browser window

[oasis4he]

Not Saved

As a user, when I have unsaved changes to a SALSA,
when I close the browser window,
alert me with a dialog:

You have changes to your SALSA that are not saved. Would you like to save these changes?

Discard | Save

Not Published

As a user, when I create a new Template
and have not Published to the LMS, [check the Version or add Publish counter]
when I close the browser window,
alert me with a dialog:

This SALSA has not been published yet. Would you like to publish this SALSA?

Discard | Publish