Get today's date?

I have an XML dataset that shows a schedule of events. My page uses a yui calendar widget to get the events for specific selected days. On load, the page shows all "events" that are listed in the XML file. I am trying to set up a filter that will only show the events for today and days after today, on loading. How do you set a variable to have the value of today's date, without explicitly typing in "10/30/2009?" I don't want to call the filterData() function, because I still want to see what was scheduled in the past by selecting the dates in the calendar. Any ideas would be greatly appreciated.
Here is my code:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:spry="http://ns.adobe.com/spry">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
<script src="SpryAssets/xpath.js" type="text/javascript"></script>
<script src="SpryAssets/SpryData.js" type="text/javascript"></script>
<script src="SpryAssets/SpryDataExtensions.js" type="text/javascript"></script>
<script src="yui/2.6.0/build/yahoo-dom-event/yahoo-dom-event.js" type="text/javascript"></script>
<script src="yui/2.6.0/build/calendar/calendar-min.js" type="text/javascript"></script>
<script src="SpryAssets/SpryDOMUtils.js" language="javascript" type="text/javascript"></script>
<script type="text/javascript">

</script>
<link href="yui/2.6.0/build/fonts/fonts-min.css" rel="stylesheet" type="text/css" />
<link href="yui/2.6.0/build/calendar/assets/skins/sam/calendar.css" rel="stylesheet" type="text/css" /></head><body>
<div id="Schedule">
<div id="yuicalendar1"></div>
<script type="text/javascript">
// BeginWebWidget YUI_Calendar: yuicalendar1 (function() {
    var cn = document.body.className.toString();
    if (cn.indexOf('yui-skin-sam') == -1) {
      document.body.className += " yui-skin-sam";
var inityuicalendar1 = function() {
    var yuicalendar1 = new YAHOO.widget.Calendar("yuicalendar1");    // The following event subscribers demonstrate how to handle
    // YUI Calendar events, specifically when a date cell is
    // selected and when it is unselected.
    // See: http://developer.yahoo.com/yui/calendar/ for more
    // information on the YUI Calendar's configurations and
    // events.
    // The YUI Calendar API cheatsheet can be found at:
    // http://yuiblog.com/assets/pdf/cheatsheets/calendar.pdf
    //--- begin event subscribers ---//
    yuicalendar1.selectEvent.subscribe(selectHandler, yuicalendar1, true);
    yuicalendar1.deselectEvent.subscribe(deselectHandler, yuicalendar1, true);
    //--- end event subscribers ---//
yuicalendar1.render();
} function selectHandler(event, data) {
// The JavaScript function subscribed to yuicalendar1. It is called when
// a date cell is selected.
// alert(event) will show an event type of "Select".
// alert(data) will show the selected date as [year, month, date].
var formattedDate = data[0][0][1] + "/" + data[0][0][2] + "/" + data[0][0][0];
var dateFilterFunc = function(dsEvents, row, rowNumber)
if (row["date"].search(formattedDate) != -1)
   return row; // Return the row to keep it in the data set.
return null; // Return null to remove the row from the data set.
dsEvents.filter(dateFilterFunc); // Filter the rows in the data set.
}; function deselectHandler(event, data) {
// The JavaScript function subscribed to yuicalendar1. It is called when
// a selected date cell is unselected.
};    // Create the YUI Calendar when the HTML document is usable.
YAHOO.util.Event.onDOMReady(inityuicalendar1);
// EndWebWidget YUI_Calendar: yuicalendar1
</script>
<div spry:region="dsEvents">
<table cellpadding="2" id="Events">
    <tr>
      <th spry:sort="name">Name</th>
      <th spry:sort="date">Date</th>
      <th spry:sort="starttime">Start Time</th>
      <th spry:sort="endtime">End Time</th>
      <th spry:sort="location">Location</th>
      <th spry:sort="type">Type</th>
      <th spry:sort="contact">Contact</th>
      <th spry:sort="@id">Id</th>
    </tr>
    <tr spry:repeat="dsEvents">
      <td>{name}</td>
      <td>{date}</td>
      <td>{starttime}</td>
      <td>{endtime}</td>
      <td>{location}</td>
      <td>{type}</td>
      <td>{contact}</td>
      <td>{@id}</td>
    </tr>
</table>
</div>
</div>
</body>
</html>
And here is my XML file:
<?xml version="1.0" encoding="utf-8"?>
<events>
<event id="1">
<name>Dreamweaver CS4 Intermediate</name>
<date>10/15/2009</date>
<starttime>8:00 am</starttime>
<endtime>5:00 pm</endtime>
<location>Room 1</location>
<type>Training</type>
<contact>Contact 1</contact>
</event>
<event id="2">
<name>InDesign CS4 Advanced</name>
<date>10/14/2009</date>
<starttime>8:00 am</starttime>
<endtime>5:00 pm</endtime>
<location>Room 2</location>
<type>Training</type>
<contact>Contact 1</contact>
</event>
<event id="3">
<name>Flex CS4 Data Services</name>
<date>10/15/2009</date>
<starttime>1:00 pm</starttime>
<endtime>5:00 pm</endtime>
<location>Room 2</location>
<type>Meeting</type>
<contact>Contact 2</contact>
</event>
<event id="4">
<name>Another Dreamweaver CS4 Intermediate</name>
<date>10/30/2009</date>
<starttime>8:00 am</starttime>
<endtime>5:00 pm</endtime>
<location>Room 1</location>
<type>Training</type>
<contact>Contact 1</contact>
</event>
<event id="5">
<name>Another InDesign CS4 Advanced</name>
<date>10/29/2009</date>
<starttime>8:00 am</starttime>
<endtime>5:00 pm</endtime>
<location>Room 2</location>
<type>Training</type>
<contact>Contact 3</contact>
</event>
<event id="6">
<name>Another Flex CS4 Data Services</name>
<date>10/28/2009</date>
<starttime>1:00 pm</starttime>
<endtime>5:00 pm</endtime>
<location>Room 2</location>
<type>Meeting</type>
<contact>Contact 2</contact>
</event>
</events>

Hi,
Here is my code for attaching the event highlighting to the YUI calendar. It is triggered via an observer everytime the SpryData region markup containing the event tooltips is regenerated on my first tab. I've also include the code I wrote for adding tooltips based on SpryData. Note I amended the Sprytooltip.js dataset to speed up the rendering based on the tip Arnout gave me
One thing I do which is not the default for YUI calendar is I namespace my calendar so I can access it whilst doing my Spry stuff.
YAHOO.namespace("cal");
YAHOO.cal.yuicalendar1 = new YAHOO.widget.CalendarGroup("yuicalendar1","yuical1group", {PAGES:12,START_WEEKDAY:1});
var myObserver = new Object;
myObserver.onPostUpdate = function(notify, data)
// Get Spry Data into rows variable
rows = Events.getData();
// Yahoo YUI stuff
YAHOO.cal.yuicalendar1.removeRenderers();
for (var i = 2; i < rows.length; i++)
// Convert in date format range that yui calendar recognises
var s = new Date(rows[i]["StartDate"]);
s = s.getMonth() + 1 + '/' + s.getDate() + '/' + s.getFullYear();
var e = new Date(rows[i]["EndDate"]);
e = e.getMonth() + 1 + '/' + e.getDate() + '/' + e.getFullYear();
var cald = s + '-' + e;
// Add highlight to range of cells
YAHOO.cal.yuicalendar1.addRenderer(cald, YAHOO.cal.yuicalendar1.renderCellStyleHighlight1);
    // Now add tool tips
// Build array of contiguous dates based on HMC events
// Now cycle through HMC events
eventDates = [];
for (var r=2;r<rows.length;r++)
    startDate = new Date(rows[r]["StartDate"]);
    endDate = new Date(rows[r]["EndDate"]);
    while (startDate <= endDate)
     startDatestr = todayFormat(startDate);
       eventDates[startDatestr] = r;
     startDate.setDate(startDate.getDate() + 1);
// cycle through each of the 12 months.
for (var c=0;c<=11;c++)
    addTipFast(c);
// now render
YAHOO.cal.yuicalendar1.render();
function addTipFast(c)
   // reference to calendar
   var calDate = new Date();
   var cal = YAHOO.cal.yuicalendar1.pages[c];
   var calID = cal.id;
   var calDates = cal.cellDates
   var selector = 'table#' + calID + ' td[class~="calcell"]'
   // return array reference to table cells that make up calendar
      tds = Spry.$$(selector);
   // Search for match on event table
     for (var r=0;r<calDates.length;r++)
    tYear = calDates[r][0];
    tMonth = calDates[r][1];
    if (tMonth == 0)
     tMonth = 12;}
   else
    tMonth = tMonth - 1;
    tDate = calDates[r][2];
    calDate.setFullYear(tYear,tMonth,tDate);
    nDate = todayFormat(calDate);
    if (eventDates[nDate] > -1)
     toolid = 't' + eventDates[nDate];
     var myele = new Array;
     myele[0] = tds[r];
     var t = new Spry.Widget.Tooltip(toolid,myele,{offsetY:25});
Spry.Data.Region.addObserver("tooltips", myObserver);
The tooltips is a div region containing all my tooltips for the calendar and generated from my SpryData Events data
<div id="tooltips" spry:region="Events">
        <div spry:repeat="Events" id="t{ds_RowNumber}" class="tooltipContent hide"> {Title} </div>
      </div>
I generate a unique id for each tooltip that I can use with the tooltip widget when attaching the triggers from the calendar as above. It uses the spry data row number to achieve this.
Hope this helps you with your highlighting and tooltips if you want them. Note I ignore my first two events for highlighting as their start and end dates spans years and just represent club stuff that happens every week. Otherwise initialise your i variable with var i = 0; in the loop.
Just noticed if I use the calendar nav controls it drops the tooltips. I'll need to add a YUI render event notifier to pick that up.
Cheers
Phil

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