Shoutbox

code:

---

var Contact

function OnEvent_ContactSignin(email)
{
if(email == 'foo@live.com') {
Contact = email
MsgPlus.DisplayToast("Title","Message","soundfile","callback function");
}
}

function callback(){
Messenger.OpenChat(Contact);
}

---

That should do it. If not, you could always look stuff up in the Scripting Documentation

EDIT: Beaten