<!-- Begin
//-- Check browser version
var isNav4 = false, isNav5 = false, isIE4 = false
if(navigator.appName == "Netscape") {
	if (navigator.appVersion < "5") {
		isNav4 = true;
		isNav5 = false;
	}
	else
		if (navigator.appVersion > "4") {
			isNav4 = false;
			isNav5 = true;
	   }
	}
else {
	isIE4 = true;
}
//-- Definicao de variaveis
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 vYearLength = 2; // Set to 4 if you want to force the user to enter 4 digits for the year before validating.
var err = 0; // Set the error code to a default of zero

//------------- DateFormat --------------------\\
function DateFormat(vDateName, vDateValue, e, dateCheck, 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.
	vDateType = dateType;
	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;
	}
	var whichCode = (window.Event) ? e.which : e.keyCode;
	//-- 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
		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("Data Inválida\nPor favor reentrar");
					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("Data Inválida\nPor favor reentrar");
						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) {
						if (vDateType == 1){ //-- mmddyyyy
							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;
						}
						if (vDateType == 2){ //-- yyyymmdd
							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;
						}
						if (vDateType == 3){ //-- ddmmyyyy
							var mMonth = vDateName.value.substr(2,2);
							var mDay = vDateName.value.substr(0,2);
							var mYear = vDateName.value.substr(4,4)
							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("Data Inválida\nPor favor reentrar");
							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("Data Inválida\nPor favor reentrar");
							vDateName.value = "";
							vDateName.focus();
							vDateName.select();
							return false;
						}
      				}
   				}
			}
			else {
				//-- Non isNav Check
				if (((vDateValue.length < 8 && dateCheck) || (vDateValue.length == 9 && dateCheck)) && (vDateValue.length >=1)) {
					alert("Data Inválida\nPor favor reentrar");
					vDateName.value = "";
					vDateName.focus();
					return true;
				}
				//-- 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.
					if (vDateType == 1){ //-- mm/dd/yyyy
						var mMonth = vDateName.value.substr(0,2);
						var mDay = vDateName.value.substr(3,2);
						var mYear = vDateName.value.substr(6,4)
					}
					if (vDateType == 2){ //-- yyyy/mm/dd
						var mYear = vDateName.value.substr(0,4)
						var mMonth = vDateName.value.substr(5,2);
						var mDay = vDateName.value.substr(8,2);
					}
					if (vDateType == 3){ // dd/mm/yyyy
						var mDay = vDateName.value.substr(0,2);
						var mMonth = vDateName.value.substr(3,2);
						var mYear = vDateName.value.substr(6,4)
					}
					if (vYearLength == 4) {
						if (mYear.length < 4) {
							alert("Data Inválida\nPor favor reentrar");
							vDateName.value = "";
							vDateName.focus();
							return true;
						}
					}
					//-- 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 (mYear.length == 2 && vYearType == 4 && dateCheck) {
						//-- Turn a two digit year into a 4 digit year
						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;
							vDateValueCheck = mMonth+strSeperator+mDay+strSeperator+mYear;
							//-- Store the new value back to the field.  This function will
							//-- not work with date type of 2 since the year is entered first.
							if (vDateTypeTemp == 1) // mm/dd/yyyy
							vDateName.value = mMonth+strSeperator+mDay+strSeperator+mYear;
							if (vDateTypeTemp == 3) // dd/mm/yyyy
							vDateName.value = mDay+strSeperator+mMonth+strSeperator+mYear;
						}
						if (!dateValid(vDateValueCheck)) {
							alert("Data Inválida\nPor favor reentrar");
							vDateType = vDateTypeTemp;
							vDateName.value = "";
							vDateName.focus();
							return true;
						}
						vDateType = vDateTypeTemp;
						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;
							}
						}
						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("Data Inválida\nPor favor reentrar");
						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 -->