Events.js

var partyQueue = [];

var Events = {
    party : {
        accept : function (mode, param1, param2, name1, name2) {
            // "name1 invites you to ally against the forces of evil."
            if (mode === 0x07 && param2 === 0x05 && partyQueue.indexOf(name1) === -1) {
                partyQueue.push(name1);
            }
        },
        invite : function (mode, param1, param2, name1, name2) {
            // "name1(name2) joined our world. Diablo's minions grow stronger."
            if (mode === 0x02 && partyQueue.indexOf(name1) === -1) {
                partyQueue.push(name1);
            }
        }
    }
}