"save to calendar" function?

hi all,

i’m assuming this is javascript…

i’m working on a save the date postcard for a non-prof fundraising event. i want to put a qr code on the postcard so peeps can read the code, hit the page and save it to their mobile calender and then have it update their outlook when the phone synch with the 'puter.

is there something out there in the open source world i can implement for this? a ready-to-use script would be most appreciated, but i can usually figure out how to modify the required fields if some parameters need setting.

thanks bunches!

michelle