function getRoomList()
{
Chat.mucListRooms();
}

var Chat = {
mucListRooms: function () {
Chat.connection.muc.listRooms(
Strophe.getDomainFromJid(Chat.connection.jid),
function (status) {
Chat.log("List of Chat Rooms", status);
},
function (status) {
Chat.log("Error getting Chat Rooms", status);
}
);
}
}