si lo quieres mas amplio con un calendario seria asi
1 <div id="cal1Container"></div>
<script>
2 YAHOO.namespace("example.calendar");
3
4 YAHOO.example.calendar.init = function() {
5 YAHOO.example.calendar.cal1 =
6 new YAHOO.widget.Calendar("cal1","cal1Container", { MULTI_SELECT: true } );
7
8 YAHOO.example.calendar.cal1.render();
9 }
10
11 YAHOO.util.Event.onDOMReady(YAHOO.example.calendar .init);
12 </script>