Add IM links to your web page

MSN
(These only seem to work in IE)
msnim:chat?contact=[E-Mail Address]
msnim:add?contact=[E-Mail Address]
msnim:voice?contact=[E-Mail Address]
msnim:video?contact=[E-Mail Address]

Yahoo!
ymsgr:SendIM?[your Yahoo ID]
ymsgr:sendIM?[your Yahoo ID]&m=[Your+Message]
ymsgr:addfriend?[your Yahoo ID]

Skype
skype:[yourID]?call

AIM
aim:goim?screenname=[AOL Screen name]
aim:goim?screenname=[AOL Screen name]&message=[Your+Message]
aim:addbuddy?screenname=[AOL SCREEN NAME]

ICQ
http://www.icq.com/people/cmd.php?uin=[ICQ Number]&action=message
http://www.icq.com/people/cmd.php?uin=[ICQ Number]&action=add

If any one know a way to get the MSN links to work in Firefox please let me know.