mailto: link with multiple recipients in a Google Docs Document

mailto: link with multiple recipients in a Google Docs Document

I'd like to create a hyperlink in my Google Document that will pop up the
"new email" dialog of Outlook and populate the TO: line with multiple
recipients.
If this were a regular HTML page or a desktop Word document, I could just
use either of these URLs in the hyperlink:
mailto:Joe;Frank;Bill
mailto:Joe@mycompany.com;Frank@mycompany.com;Bill@mycompany.com
Outlook, when launched, will correctly resolve these names using the
Address Book in outlook. The semicolons are important-- Outlook seems to
require semicolons to delimit addresses.
But in a Google Document, when I try to create a link with the former
syntax, Google won't even let me save the link. When I try the latter
syntax, it will consider it an invalid link and won't open Outlook.
Any idea how I can get a hyperlink with either of these URLs in my Google
Doc?
I realize that the semicolon delimiter may be outlook-specific, and that's
OK since this is an internal page used only inside my company.