//---------日期输入检查---------------
function isDateString(sDate)
{
  var iaMonthDays = [31,28,31,30,31,30,31,31,30,31,30,31]
  var iaDate = new Array(3)
  var year, month, day

  if (arguments.length != 1) return false
  iaDate = sDate.toString().split("-")
  if (iaDate.length != 3) return false
  if (iaDate[1].length > 2 || iaDate[2].length > 2) return false

  year = parseFloat(iaDate[0])
  month = parseFloat(iaDate[1])
  day=parseFloat(iaDate[2])

  if (year < 1900 || year > 2100) return false
  if (((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0)) iaMonthDays[1]=29;
  if (month < 1 || month > 12) return false
  if (day < 1 || day > iaMonthDays[month - 1]) return false
  return true
}
//------日期转化函数 2005-10-9

function stringToDate(sDate, bIgnore)
{	var bValidDate, year, month, day
	var iaDate = new Array(3)

	if (bIgnore) bValidDate = true
	else bValidDate = isDateString(sDate)

	if (bValidDate)
	{  iaDate = sDate.toString().split("-")
		year = parseFloat(iaDate[0])
		month = parseFloat(iaDate[1]) - 1
		day=parseFloat(iaDate[2])
		return (new Date(year,month,day))
	}
	else return (new Date(1900,1,1))
}

/*航空公司*/
function isAirWay(s){
	var patrn=/^[a-zA-Z0-9]{2}$/;
	if (!patrn.exec(s))	
		return false;
	else
		return true;
}

/*城市判断*/
function isCity(s){
	var patrn=/^([a-zA-Z]{3}\/?)*$/;
	if (!patrn.exec(s))
		return false;
	else
		return true;
}

/*航班号*/
function isFlightNo(s)
	{
		var patrn=/^([a-zA-Z0-9]{2}[0-9]{3,5}\/?)*$/;
		if (!patrn.exec(s))
			return false;
		else
			return true;
	}
/*舱位*/
function isBunk(s)
	{
		var patrn=/^[a-zA-Z]{1}(\/[a-zA-Z]{1})*$/;
		if(!patrn.exec(s))
		return false;
		else
		return true;
	}