<!--
var dtCh= "/";
var minYear=1900;
var maxYear=2100;

function isInteger(s){
	var i;
  for (i = 0; i < s.length; i++){   
      // Check that current character is number.
      var c = s.charAt(i);
      if (((c < "0") || (c > "9"))) return false;
  }
  // All characters are numbers.
  return true;
}

function stripCharsInBag(s, bag){
	var i;
  var returnString = "";
  // Search through string's characters one by one.
  // If character is not in bag, append to returnString.
  for (i = 0; i < s.length; i++){   
      var c = s.charAt(i);
      if (bag.indexOf(c) == -1) returnString += c;
  }
  return returnString;
}

function daysInFebruary (year){
  // February has 29 days in any year evenly divisible by four,
  // EXCEPT for centurial years which are not also divisible by 400.
  return (((year % 4 == 0) && ( (!(year % 100 == 0)) || (year % 400 == 0))) ? 29 : 28 );
}
function DaysArray(n) {
  for (var i = 1; i <= n; i++) {
    this[i] = 31;
    if (i==4 || i==6 || i==9 || i==11) {this[i] = 30}
    if (i==2) {this[i] = 29}
  } 
  return this
}

function isDate(dtStr){
  var daysInMonth = DaysArray(12);
  var pos1=dtStr.indexOf(dtCh);
  var pos2=dtStr.indexOf(dtCh,pos1+1);
  var strMonth=dtStr.substring(0,pos1);
  var strDay=dtStr.substring(pos1+1,pos2);
  var strYear=dtStr.substring(pos2+1);
  strYr=strYear;
  if (strDay.charAt(0)=="0" && strDay.length>1) strDay=strDay.substring(1);
  if (strMonth.charAt(0)=="0" && strMonth.length>1) strMonth=strMonth.substring(1);
  for (var i = 1; i <= 3; i++) {
    if (strYr.charAt(0)=="0" && strYr.length>1) strYr=strYr.substring(1);
  }
  month=parseInt(strMonth);
  day=parseInt(strDay);
  year=parseInt(strYr);
  if (pos1==-1 || pos2==-1){
    alert("The date format should be : mm/dd/yyyy");
    return false;
  }
  if (strMonth.length<1 || month<1 || month>12){
    alert("Please enter a valid month");
    return false;
  }
  if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
    alert("Please enter a valid day");
    return false;
  }
  if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
    alert("Please enter a valid 4 digit year between "+minYear+" and "+maxYear);
    return false;
  }
  if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
    alert("Please enter a valid date");
    return false;
  }
  return true;
}

function IsNumber(field, msg)
{
  var ret;
  with (field)
  {
    ret = true;
    if (isNaN(value)==true)
    {
      alert(msg);
      focus();
      ret = false;
    }
  }
  return ret;
}

function HasValue(field, msg)
{
  var ret;
  with (field)
  {
    ret = true;
    if (value==null||value=="")
    {
      alert(msg);
      focus();
      ret = false;
    }
  }
  return ret;
}

function HasValueDefault(field, def)
{
  with (field)
  {
    if (value==null||value=="")
    {value = def;}
  }
  return true;
}
//-->