function checkAvailability() {
	var iYear  = 2008;
	var iMonth = 9;
	var iDay   = 5;

	var todaydate = pad4(2008) + pad2(9) + pad2(5);
	var checkindate;
	var checkoutdate;
	var week50date;
	
	checkindate = pad4(document.frmMain.Yearcheckindate.options[document.frmMain.Yearcheckindate.selectedIndex].value) + pad2(document.frmMain.Monthcheckindate.options[document.frmMain.Monthcheckindate.selectedIndex].value) + pad2(document.frmMain.Daycheckindate.options[document.frmMain.Daycheckindate.selectedIndex].value);
	checkoutdate = pad4(document.frmMain.Yearcheckoutdate.options[document.frmMain.Yearcheckoutdate.selectedIndex].value) + pad2(document.frmMain.Monthcheckoutdate.options[document.frmMain.Monthcheckoutdate.selectedIndex].value) + pad2(document.frmMain.Daycheckoutdate.options[document.frmMain.Daycheckoutdate.selectedIndex].value);
	week50date = pad4(2009) + pad2(8) + pad2(21);
	
	if (checkindate < todaydate) {
		alert("Check In date cannot be a past date");
		return void(0);
	}

	if (checkoutdate <= todaydate) {
		alert("Check Out date cannot be today's date");
		return void(0);
	}
	if (checkindate >= checkoutdate)
	{
		alert("Check In date must be before Check Out date");
		return void(0);	
	}
	if (checkoutdate > week50date)
		{
		alert("Availability for arrival dates more than 50 weeks in the future is not available at this time.");
		return void(0);
	}

	if ((document.frmMain.state.selectedIndex <= 0) || (document.frmMain.MetroID.selectedIndex <= 0))	{
		alert("You must select a State/Province and metro area.");
		return void(0);
	}


	//Check the numAdults and numKids < 5
	var chkNumAdults = document.frmMain.numadults.options[document.frmMain.numadults.selectedIndex].value - 0;
	var chkNumKids   = document.frmMain.numkids.options[document.frmMain.numkids.selectedIndex].value - 0;
	if ((chkNumAdults + chkNumKids) >= 5) {
		alert('Maximum occupancy per room is 4 people.  Please reduce your numbers.');
		return void(0);
	}

	//Check the company code is  valid alphanumeric characters
	var sCompCode = '';
	if (isAlphaNumeric('companycode')) {
		if(document.frmMain.companycode.value.length > 0){
			sCompCode = document.frmMain.companycode.value;
		} else {
			sCompCode = '';
		}
		
		
	} else {
		alert('The company code is invalid. Please try again.');
		document.frmMain.companycode.value = '';
		document.frmMain.companycode.focus();
		return void(0);
	}

	//Check the promo code for valid alphanumeric characters
	var sPromo = '';
	if (isAlphaNumeric('promocode')) {
		if(document.frmMain.promocode.value.length > 0){
			sPromo = document.frmMain.promocode.value;
		} else {
			sPromo = '';
		}
	} else {
		alert('The promotional code is invalid. Please try again.');
		document.frmMain.promocode.value = '';
		document.frmMain.promocode.focus();
		return void(0);
	}

	

	var url = "http://www.ExtendedStayAmerica.com/session2.asp"+
		"?page=" + escape("http://www.ExtendedStayAmerica.com/") +
		"&hotelid="    + escape(document.frmMain.location.options[document.frmMain.location.selectedIndex].value) + 
		"&state="      + escape(document.frmMain.state.options[document.frmMain.state.selectedIndex].value) + 
		"&metroID="    + escape(document.frmMain.MetroID.options[document.frmMain.MetroID.selectedIndex].value) + 
		"&iata="       + escape("") + 
		"&corpinfo="   + escape(sCompCode) +
		"&numadults="  + document.frmMain.numadults.options[document.frmMain.numadults.selectedIndex].value + "" + 
		"&numkids="    + document.frmMain.numkids.options[document.frmMain.numkids.selectedIndex].value + "" + 
		"&numrooms="   + document.frmMain.rooms.options[document.frmMain.rooms.selectedIndex].value + "" +
		"&inmonth="    + document.frmMain.Monthcheckindate.options[document.frmMain.Monthcheckindate.selectedIndex].value + "" + 
		"&inday="      + document.frmMain.Daycheckindate.options[document.frmMain.Daycheckindate.selectedIndex].value + "" + 
		"&inyear="     + document.frmMain.Yearcheckindate.options[document.frmMain.Yearcheckindate.selectedIndex].value + "" + 
		"&outmonth="   + document.frmMain.Monthcheckoutdate.options[document.frmMain.Monthcheckoutdate.selectedIndex].value + "" + 
		"&outday="     + document.frmMain.Daycheckoutdate.options[document.frmMain.Daycheckoutdate.selectedIndex].value + "" + 
		"&outyear="    + document.frmMain.Yearcheckoutdate.options[document.frmMain.Yearcheckoutdate.selectedIndex].value + "" + 
		"&rateid="     + escape(document.frmMain.rates.options[document.frmMain.rates.selectedIndex].value) + 
		"&directbill=" + escape("") +
		"&promoCode="  + escape(sPromo);
		
		
	if (sCompCode.length > 0) {
		url = url + "&companycode=" + escape(sCompCode);
	}
	if (document.frmMain.location.selectedIndex <= 0) {
		url = url + "&destpage=make";
	} else {
		url = url + "&destpage=lodging";
	}
	parent.location.href = url + '&WTReferrer=http%3A%2F%2Fwww%2Eextendedstayamerica%2Ecom%2Fincludes%2Fcontent%2DreservationFormjs%2Easp%3F';

	return void(0);
}