function testForSpcChars(thisstr)
  // text and numbers
  {
 //alert("doing TN");
 // alert(checkTextTN)
 alert(thisstr)
     //string to check against
     var checkTextTN ="'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789' ";

    var checkStr = thisstr;
    var allValid = true;
    for (i = 0;  i < checkStr.length;  i++)
    {
      ch = checkStr.charAt(i);
      for (j = 0;  j < checkTextTN.length;  j++)
	    //document.write('ch=' + 'X' + ch + 'X' + ' it= X' + checkTextTN.charAt(j) + 'X') 
        if (ch == checkTextTN.charAt(j))
          break;
      if (j == checkTextTN.length)
      {
        allValid = false;
        break;
      }
    }
   if (allValid)
   {
     return true
   }
    if (!allValid)
    {
      //alert("Invalide characters in the field.");
      //theForm.txtt1.focus();
      return (false);
    }
  } // charType=TN 'all text
  
  function testValidEmail(thisstr)
 //' if (CharType == "EM")
  // email
  {
  //alert('thisstr=' + thisstr)
  var checkEmail = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz@.~_0123456789- \t\r\n\f";
    var checkStr = thisstr;
    var allValid = true;

	//look for the @ and the .  to verify valid email address
	var findAtsign=checkStr.indexOf('@');
	var findDot=checkStr.indexOf('.');
	//alert('at=' + findAtsign + ' dot=' + findDot)
	if (findAtsign == -1 || findDot == -1)
	{
	  //alert(checkStr + ' does not appear to be a valid Email Address')
	  allValid = false;
	  return false
    }


  for (i = 0;  i < checkStr.length;  i++)
    {
      ch = checkStr.charAt(i);
      for (j = 0;  j < checkEmail.length;  j++)
        if (ch == checkEmail.charAt(j))
          break;
      if (j == checkEmail.length)
      {
        allValid = false;
        break;
      }
    }
    if (!allValid)
    {
      alert("Invalid Entry in the " + DispName + " field.");
      //theForm.txtt1.focus();
      return (false);
    }
  if (allValid)
   {
     return true
   }
    if (!allValid)
    {
      //alert("Invalide characters in the field.");
      //theForm.txtt1.focus();
      return (false);
    }
  } // end of function testvalid email
  
var dtCh= "/";
var minYear=1900;
var maxYear=2050;

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 isValidDate(dtStr,fldName){
  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 in the " + fldName)
    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 in the " + fldName)
    return false
  }
  if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
    alert("Please enter a valid 4 digit year between "+minYear+" and "+maxYear + "in the " + fldName)
    return false
  }
  if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
    alert("Please enter a valid date in the " + fldName)
    return false
  }
return true
}