<!-- Begin
var isNav4 = false, isNav5 = false, isIE4 = false
var strSeperator = "/"; 
// If you are using any Java validation on the back side you will want to use the / because 
// Java date validations do not recognize the dash as a valid date separator.
var vDateType = 3; 		// Global value for type of date format
//                1 = mm/dd/yyyy
//                2 = yyyy/dd/mm  (Unable to do date check at this time)
//                3 = dd/mm/yyyy
var vYearType = 4; 		//Set to 2 or 4 for number of digits in the year for Netscape
var err = 0; 			// Set the error code to a default of zero
if(navigator.appName == "Netscape") {
if (navigator.appVersion < "5") {
isNav4 = true;
isNav5 = false;
}
else
if (navigator.appVersion > "4") {
isNav4 = false;
isNav5 = true;
   }
}
else isIE4 = true;

function DateFormat(vDateName, vDateValue, e, dateCheck, dateType) {
	//if (document.readyState != 'complete') return true;
	//alert("AppVersion = "+navigator.appVersion+" \nNav. 4 Version = "+isNav4+" \nNav. 5 Version = "+isNav5+" \nIE Version = "+isIE4+" \nYear Type = "+vYearType+" \nDate Type = "+vDateType+" \nSeparator = "+strSeperator);
	vDateType = dateType;

	//////////////////////////////////////////////////////////////////////////////////////
	// vDateName = object name
	// vDateValue = value in the field being checked
	// e = event
	// dateCheck 
	//       True  = Verify that the vDateValue is a valid date
	//       False = Format values being entered into vDateValue only
	// vDateType
	//       1 = mm/dd/yyyy
	//       2 = yyyy/mm/dd
	//       3 = dd/mm/yyyy
	//Enter a tilde sign for the first number and you can check the variable information.
	//////////////////////////////////////////////////////////////////////////////////////

	if (vDateValue == "~") {
		alert("AppVersion = "+navigator.appVersion+" \nNav. 4 Version = "+isNav4+" \nNav. 5 Version = "+isNav5+" \nIE Version = "+isIE4+" \nYear Type = "+vYearType+" \nDate Type = "+vDateType+" \nSeparator = "+strSeperator);
		vDateName.value = "";
		vDateName.focus();
		return true;
	}
	whichCode = (window.Event) ? e.which : e.keyCode;	
	 // (whichCode>=37 && whichCode<=42) --> flèches déplacement
	 // (whichCode<=32) ---> caractères échappement
	 // (whichCode==86 || whichCode==67 || whichCode==65) --> Ctrl-C et Ctrl-V et Ctrl-Z
	 // (whichCode==46) --> Suppr 
	//if(dateCheck) alert(whichCode + ' ' + dateCheck);
	if (!dateCheck && (whichCode<=32 || whichCode==86 || whichCode==67 || whichCode==65 || whichCode==46 || (whichCode>=37 && whichCode<=42))) return true;
	// Check to see if a seperator is already present.
	// bypass the date if a seperator is present and the length greater than 8
	if (vDateValue.length > 8 && isNav4) {
		if ((vDateValue.indexOf("-") >= 1) || (vDateValue.indexOf("/") >= 1)) return true;
	}
	//Eliminate all the ASCII codes that are not valid
	var alphaCheck = " abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ/-";
	if (alphaCheck.indexOf(vDateValue) >= 1) {
		if (isNav4) {
			vDateName.value = "";
			vDateName.focus();
			vDateName.select();
			return false;
		} else {
			vDateName.value = vDateName.value.substr(0, (vDateValue.length-1));
			return false;
	   }
	}
	if (whichCode == 8) { 
		// Ignore the Netscape value for backspace. IE has no value(8)	
		return false;
	} else {
		//Create numeric string values for 0123456789/
		//The codes provided include both keyboard and keypad values
		var strCheck = '47,48,49,50,51,52,53,54,55,56,57,58,59,95,96,97,98,99,100,101,102,103,104,105,';
		if (strCheck.indexOf(whichCode+',') != -1) {
			if (isNav4) {
				if (((vDateValue.length < 6 && dateCheck) || (vDateValue.length == 7 && dateCheck)) && (vDateValue.length >=1)) {
					alert("Invalid Date\nPlease Re-Enter.");
					vDateName.value = "";
					vDateName.focus();
					vDateName.select();
					return false;
				}
				if (vDateValue.length == 6 && dateCheck) {
					var mDay = vDateName.value.substr(2,2);
					var mMonth = vDateName.value.substr(0,2);
					var mYear = vDateName.value.substr(4,4);
					//Turn a two digit year into a 4 digit year
					if (mYear.length == 2 && vYearType == 4) {
						var mToday = new Date();
						//If the year is greater than 30 years from now use 19, otherwise use 20
						var checkYear = mToday.getFullYear() + 30; 
						var mCheckYear = '20' + mYear;
						if (mCheckYear >= checkYear) mYear = '19' + mYear;
						else mYear = '20' + mYear;
					}
					var vDateValueCheck = mMonth+strSeperator+mDay+strSeperator+mYear;
					if (!dateValid(vDateValueCheck)) {
						alert("Invalid Date\nPlease Re-Enter");
						vDateName.value = "";
						vDateName.focus();
						vDateName.select();
						return false;
					}
					return true;
				} else {
					// Reformat the date for validation and set date type to a 1
					if (vDateValue.length >= 8  && dateCheck) {
						// mmddyyyy
						if (vDateType == 1) {
							var mDay = vDateName.value.substr(2,2);
							var mMonth = vDateName.value.substr(0,2);
							var mYear = vDateName.value.substr(4,4)
							vDateName.value = mMonth+strSeperator+mDay+strSeperator+mYear;
						}
					// yyyymmdd
						if (vDateType == 2) {
							var mYear = vDateName.value.substr(0,4)
							var mMonth = vDateName.value.substr(4,2);
							var mDay = vDateName.value.substr(6,2);
							vDateName.value = mYear+strSeperator+mMonth+strSeperator+mDay;
						}
						// ddmmyyyy
						if (vDateType == 3) {
							var mMonth = vDateName.value.substr(2,2);
							var mDay = vDateName.value.substr(0,2);
							var mYear = vDateName.value.substr(4,4);
							/* test date farfelue
							if (mDay.indexOf("/")!=-1 || mMonth.indexOf("/")!=-1 || mYear.indexOf("/")!=-1) {
								alert("Invalid Date\nValid date is : dd/mm/yy or dd/mm/yyyy).\nPlease Re-Enter");
								vDateType = vDateTypeTemp;
								vDateName.value = "";
								vDateName.focus();
								vDateName.select();
								return false;
							}*/
							vDateName.value = mDay+strSeperator+mMonth+strSeperator+mYear;
						}
						//Create a temporary variable for storing the DateType and change
						//the DateType to a 1 for validation.
						var vDateTypeTemp = vDateType;
						vDateType = 1;
						var vDateValueCheck = mMonth+strSeperator+mDay+strSeperator+mYear;
						if (!dateValid(vDateValueCheck)) {
							alert("Invalid Date\nPlease Re-Enter");
							vDateType = vDateTypeTemp;
							vDateName.value = "";
							vDateName.focus();
							vDateName.select();
							return false;
						}
						vDateType = vDateTypeTemp;
						return true;
					} else {
						if (((vDateValue.length < 8 && dateCheck) || (vDateValue.length == 9 && dateCheck)) && (vDateValue.length >=1)) {
							alert("Invalid Date\nPlease Re-Enter");
							vDateName.value = "";
							vDateName.focus();
							vDateName.select();
							return false;
				         }
					 }
				 }
			} else {
				//if (dateCheck) alert(dateCheck);
				// Non isNav Check
				//if (vDateValue.length >= 8) alert(vDateType + ' ' + dateCheck);
				if (((vDateValue.length < 8 && dateCheck) || (vDateValue.length == 9 && dateCheck)) && (vDateValue.length >=1)) {
					alert("Invalid Date\nPlease Re-Enter");
					vDateName.value = "";
					vDateName.focus();
					return false;
				}
				//if (dateCheck) alert(vDateType + ' ' + dateCheck);
				// Reformat date to format that can be validated. mm/dd/yyyy
				if (vDateValue.length >= 8 && dateCheck) {					
					// Additional date formats can be entered here and parsed out to
					// a valid date format that the validation routine will recognize.
					// mm/dd/yyyy
					if (vDateType == 1) {
						var mMonth = vDateName.value.substr(0,2);
						var mDay = vDateName.value.substr(3,2);
						var mYear = vDateName.value.substr(6,4);
					}
					// yyyy/mm/dd
					if (vDateType == 2) {
						var mYear = vDateName.value.substr(0,4)
						var mMonth = vDateName.value.substr(5,2);
						var mDay = vDateName.value.substr(8,2);
					}
					// dd/mm/yyyy
					if (vDateType == 3) {
						var mDay = vDateName.value.substr(0,2);
						var mMonth = vDateName.value.substr(3,2);
						var mYear = vDateName.value.substr(6,4);
					}
					/* test date farfelue
					if (mDay.indexOf("/")!=-1 || mMonth.indexOf("/")!=-1 || mYear.indexOf("/")!=-1) {
						alert("Invalid Date\nValid date is : dd/mm/yy or dd/mm/yyyy).\nPlease Re-Enter");
						vDateType = vDateTypeTemp;
						vDateName.value = "";
						vDateName.focus();
						vDateName.select();
						return false;
					}*/
					// Create temp. variable for storing the current vDateType
					var vDateTypeTemp = vDateType;
					// Change vDateType to a 1 for standard date format for validation
					// Type will be changed back when validation is completed.
					vDateType = 1;
					// Store reformatted date to new variable for validation.
					var vDateValueCheck = mMonth+strSeperator+mDay+strSeperator+mYear;
					if (vDateValueCheck.length >= 8 && dateCheck) {
						//Turn a two digit year into a 4 digit year
						//alert(vYearType);
						if (mYear.length == 2 && vYearType == 4) {
							var mToday = new Date();
							//If the year is greater than 30 years from now use 19, otherwise use 20
							var checkYear = mToday.getFullYear() + 30; 
							var mCheckYear = '20' + mYear;
							if (mCheckYear >= checkYear) mYear = '19' + mYear;
							else mYear = '20' + mYear;
							//alert(mYear);
						}
						vDateValueCheck = mMonth+strSeperator+mDay+strSeperator+mYear;
					} 
					if (!dateValid(vDateValueCheck)) {
						alert("Invalid Date\nPlease Re-Enter");
						vDateType = vDateTypeTemp;
						vDateName.value = "";
						vDateName.focus();
						return true;
					}					
					if (dateType==3) vDateTypeTemp = mDay+strSeperator+mMonth+strSeperator+mYear;
					vDateType = vDateTypeTemp;
					vDateName.value = vDateType;
					//alert(vDateName.value);
					return true;
				} else {					
					if (vDateType == 1) {
						if (vDateValue.length == 2) vDateName.value = vDateValue+strSeperator;
						if (vDateValue.length == 5) vDateName.value = vDateValue+strSeperator;
					}
					if (vDateType == 2) {
						if (vDateValue.length == 4) vDateName.value = vDateValue+strSeperator;
						if (vDateValue.length == 7) vDateName.value = vDateValue+strSeperator;
					}
					if (vDateType == 3) {
						if (vDateValue.length == 2) vDateName.value = vDateValue+strSeperator;
						if (vDateValue.length == 5) vDateName.value = vDateValue+strSeperator;
					}					
					//alert(vDateName.value);
					return true;
				}
			}
			if (vDateValue.length == 10 && dateCheck) {
				if (!dateValid(vDateName)) {
					// Un-comment the next line of code for debugging the dateValid() function error messages
					//alert(err);  
					alert("Invalid Date\nPlease Re-Enter");
					vDateName.focus();
					vDateName.select();
				}
			}
			return false;
		} else {
			// If the value is not in the string return the string minus the last
			// key entered.
			if (isNav4) {
				vDateName.value = "";
				vDateName.focus();
				vDateName.select();
				return false;
			} else {
				vDateName.value = vDateName.value.substr(0, (vDateValue.length-1));
				return false;
		    }
		 }
	}
}

function dateValid(objName) {
var strDate;
var strDateArray;
var strDay;
var strMonth;
var strYear;
var intday;
var intMonth;
var intYear;
var booFound = false;
var datefield = objName;
var strSeparatorArray = new Array("-"," ","/",".");
var intElementNr;
// var err = 0;
var strMonthArray = new Array(12);
strMonthArray[0] = "Jan";
strMonthArray[1] = "Feb";
strMonthArray[2] = "Mar";
strMonthArray[3] = "Apr";
strMonthArray[4] = "May";
strMonthArray[5] = "Jun";
strMonthArray[6] = "Jul";
strMonthArray[7] = "Aug";
strMonthArray[8] = "Sep";
strMonthArray[9] = "Oct";
strMonthArray[10] = "Nov";
strMonthArray[11] = "Dec";
//strDate = datefield.value;
strDate = objName;
if (strDate.length < 1) {
return true;
}
for (intElementNr = 0; intElementNr < strSeparatorArray.length; intElementNr++) {
if (strDate.indexOf(strSeparatorArray[intElementNr]) != -1) {
strDateArray = strDate.split(strSeparatorArray[intElementNr]);
if (strDateArray.length != 3) {
err = 1;
return false;
}
else {
strDay = strDateArray[0];
strMonth = strDateArray[1];
strYear = strDateArray[2];
}
booFound = true;
   }
}
if (booFound == false) {
if (strDate.length>5) {
strDay = strDate.substr(0, 2);
strMonth = strDate.substr(2, 2);
strYear = strDate.substr(4);
   }
}
//Adjustment for short years entered
if (strYear.length == 2) {
strYear = '20' + strYear;
}
strTemp = strDay;
strDay = strMonth;
strMonth = strTemp;
intday = parseInt(strDay, 10);
if (isNaN(intday)) {
err = 2;
return false;
}
intMonth = parseInt(strMonth, 10);
if (isNaN(intMonth)) {
for (i = 0;i<12;i++) {
if (strMonth.toUpperCase() == strMonthArray[i].toUpperCase()) {
intMonth = i+1;
strMonth = strMonthArray[i];
i = 12;
   }
}
if (isNaN(intMonth)) {
err = 3;
return false;
   }
}
intYear = parseInt(strYear, 10);
if (isNaN(intYear)) {
err = 4;
return false;
}
if (intMonth>12 || intMonth<1) {
err = 5;
return false;
}
if ((intMonth == 1 || intMonth == 3 || intMonth == 5 || intMonth == 7 || intMonth == 8 || intMonth == 10 || intMonth == 12) && (intday > 31 || intday < 1)) {
err = 6;
return false;
}
if ((intMonth == 4 || intMonth == 6 || intMonth == 9 || intMonth == 11) && (intday > 30 || intday < 1)) {
err = 7;
return false;
}
if (intMonth == 2) {
if (intday < 1) {
err = 8;
return false;
}
if (LeapYear(intYear) == true) {
if (intday > 29) {
err = 9;
return false;
   }
}
else {
if (intday > 28) {
err = 10;
return false;
      }
   }
}
return true;
}
function LeapYear(intYear) {
if (intYear % 100 == 0) {
if (intYear % 400 == 0) {
return true;
   }
}
else {
if ((intYear % 4) == 0) {
return true;
   }
}
return false;
}
//  End -->