MasTool help please.

RoomList.html

<template name="RoomListTemplate">
    <div id="roomList">
        <ul>
            {{#each rooms}}
            <li>{{name}}</li>
            {{/each}}
        </ul>
    </div>
</template>

RoomList.js

Template.RoomsTemplate.rooms=function()
{
    return Chatrooms.find();
}

Tabs.js

function InitRoomList()
{
    var tabs=$("#tabs");
    Meteor.ui.chunk(function(){
        var rooms = Chatrooms.find();
        return Template.RoomListTemplate({ rooms: rooms });
    });
    $("#tabs").append(roomsTemplate);
    $("#tabs").tabs("add","#roomList","rooms");
}