I really hope someone can help me figure this out.

Things can easily be turned into hyperlinks in word.

My goal is to be able to set a second hyperlink (reference) destination for each word. So that I can toggle between the two types of links with some hotkey.

So for example: when you click THIS it goes to google. I want to be able to hold shift, and make it so that instead it goes to some other page.

It seems to me that this issue can be broken into two problems/questions:

1) How to store two href values on a single character/word.
2) How to toggle between the default and secondary value.

Any advice or pushes in the right direction would be hugely appreciated.