>function chkdate(objName,tc1) { >var strDatestyle = tc1; >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; >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); > } >} >if (strYear.length == 2) { >strYear = '20' + strYear; >} >// US style >if (strDatestyle == "US") { >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; >} > >>