function isValidDate(day,month,year){
	var dteDate;
	dteDate=new Date(year,month,day);
	return ((day==dteDate.getDate()) && (month==dteDate.getMonth()) && (year==dteDate.getFullYear()));
}

YAHOO.util.Event.onDOMReady(function(){
    var Dom = YAHOO.util.Dom,
        Event = YAHOO.util.Event,
        cal1,
        over_cal = false,
        cur_field = '';

    var init = function() {
        cal1 = new YAHOO.widget.Calendar("cal1","calendar");
		cal1.cfg.setProperty("mindate","9/9/2010",false);
		cal1.cfg.setProperty("DATE_FIELD_DELIMITER", "/"); 
		cal1.cfg.setProperty("MDY_DAY_POSITION", 1); 
		cal1.cfg.setProperty("MDY_MONTH_POSITION", 2); 
		cal1.cfg.setProperty("MDY_YEAR_POSITION", 3); 
		cal1.cfg.setProperty("MD_DAY_POSITION", 1); 
		cal1.cfg.setProperty("MD_MONTH_POSITION", 2); 
        cal1.selectEvent.subscribe(getDate, cal1, true);
        cal1.renderEvent.subscribe(setupListeners, cal1, true);
        Event.addListener(['StartDate', 'EndDate'], 'focus', showCal);
        Event.addListener(['StartDate', 'EndDate'], 'blur', hideCal);
        cal1.render();
    }

    var setupListeners = function() {
        Event.addListener('calendar', 'mouseover', function() {
            over_cal = true;
        });
        Event.addListener('calendar', 'mouseout', function() {
            over_cal = false;
        });
    }

    var getDate = function() {
            var calDate = this.getSelectedDates()[0];
            calDate = calDate.getDate() + '/' + (calDate.getMonth() + 1) + '/' + calDate.getFullYear();
            cur_field.value = calDate;            
            over_cal = false;
            hideCal();
    }

    var showCal = function(ev) {
        var tar = Event.getTarget(ev);
        cur_field = tar;
    
        var xy = Dom.getXY(tar),
            date = Dom.get(tar).value;
			var mySplitResult = date.split("/");
        if (isValidDate(mySplitResult[0], mySplitResult[1], mySplitResult[2])) {
            cal1.cfg.setProperty('selected', date);
            cal1.cfg.setProperty('pagedate', new Date(mySplitResult[2], mySplitResult[1]-1, mySplitResult[0]), true);			
        } else {
            cal1.cfg.setProperty('selected', '');
            cal1.cfg.setProperty('pagedate', new Date(), true);
        }
        cal1.render();
        Dom.setStyle('calendar', 'display', 'block');
        xy[1] = xy[1] + 20;
        Dom.setXY('calendar', xy);
    }

    var hideCal = function() {
        if (!over_cal) {
            Dom.setStyle('calendar', 'display', 'none');
        }
    }

    Event.addListener(window, 'load', init);

});