// Returns if the given date is in the correct format
function isValidDate(dateStr, format) 
{
	var errorStr = "That date is not in the correct format.";
	if (format == null) { format = "MDY"; }
	format = format.toUpperCase();
	if (format.length != 3) { format = "MDY"; }
	if ( (format.indexOf("M") == -1) || (format.indexOf("D") == -1) ||
		(format.indexOf("Y") == -1) ) { format = "MDY"; }
	if (format.substring(0, 1) == "Y") { // If the year is first
		var reg1 = /^\d{2}(\-|\/|\.)\d{1,2}\1\d{1,2}$/
		var reg2 = /^\d{4}(\-|\/|\.)\d{1,2}\1\d{1,2}$/
	} else if (format.substring(1, 2) == "Y") { // If the year is second
		var reg1 = /^\d{1,2}(\-|\/|\.)\d{2}\1\d{1,2}$/
		var reg2 = /^\d{1,2}(\-|\/|\.)\d{4}\1\d{1,2}$/
	} else { // The year must be third
		var reg1 = /^\d{1,2}(\-|\/|\.)\d{1,2}\1\d{2}$/
		var reg2 = /^\d{1,2}(\-|\/|\.)\d{1,2}\1\d{4}$/
	}
	// If it doesn't conform to the right format (with either a 2 digit year or 4 digit year), fail
	if ( (reg1.test(dateStr) == false) && (reg2.test(dateStr) == false) ) { return errorStr; }
	var parts = dateStr.split(RegExp.$1); // Split into 3 parts based on what the divider was
	// Check to see if the 3 parts end up making a valid date
	if (format.substring(0, 1) == "M") { var mm = parts[0]; } 
	else  if (format.substring(1, 2) == "M") { var mm = parts[1]; } else { var mm = parts[2]; }
	if (format.substring(0, 1) == "D") { var dd = parts[0]; } 
	else if (format.substring(1, 2) == "D") { var dd = parts[1]; } else { var dd = parts[2]; }
	if (format.substring(0, 1) == "Y") { var yy = parts[0]; } 
	else if (format.substring(1, 2) == "Y") { var yy = parts[1]; } else { var yy = parts[2]; }
	if (parseFloat(yy) <= 50) { yy = (parseFloat(yy) + 2000).toString(); }
	if (parseFloat(yy) <= 99) { yy = (parseFloat(yy) + 1900).toString(); }
	var dt = new Date(parseFloat(yy), parseFloat(mm)-1, parseFloat(dd), 0, 0, 0, 0);
	if (parseFloat(dd) != dt.getDate()) { return errorStr; }
	if (parseFloat(mm)-1 != dt.getMonth()) { return errorStr; }
	
	todayDate = new Date();
		
	if (dt.valueOf() > todayDate.valueOf())
		return "You cannot search for alerts on future dates.";
			
	return "";
}

// Opens up the Alerts page for the given alert date
function getAlertsForDate(dtFormat)
{
	dateStr = getObject("alertDate").value;
	if (dtFormat == "mmddyyyy")
		validMsg = isValidDate(dateStr, "MDY");
	else if (dtFormat == "yyyymmdd")
		validMsg = isValidDate(dateStr, "YMD");
	else
		validMsg = isValidDate(dateStr, "DMY");
	
	if (validMsg != "")
	{
		alert(validMsg);
		return;
	}

	window.location = "/console/Alerts.aspx?date=" + dateStr + "&search=yes";
}