//********************************************************************** //Calendaring Javascript FUNCTIONS //********************************************************************** function makeArray(n) { this.length = n; return this; } // global declarations and initialization function init () { theDate = new Date(); today = new Date(); currMonth = today.getMonth(); msPerDay = 24*60*60*1000; cookieString = "dispMonth="+currMonth+";"; document.cookie = cookieString; startOfString = document.cookie.indexOf("dispMonth"); countbegin = document.cookie.indexOf("=",startOfString) + 1; countend = document.cookie.indexOf(";",countbegin); if (countend == -1) { countend = document.cookie.length; } dispMonth = eval ("document.cookie.substring(countbegin,countend)"); firstOfMonth = new Date(today.getYear(),dispMonth,1); monthName = new makeArray(12); monthName[1] = "January"; monthName[2] = "February"; monthName[3] = "March"; monthName[4] = "April"; monthName[5] = "May"; monthName[6] = "June"; monthName[7] = "July"; monthName[8] = "August"; monthName[9] = "September"; monthName[10] = "October"; monthName[11] = "November"; monthName[12] = "December"; } // entry point function openCalendar (monthFldName, dateFldname, yearFldName, formNumber, tableColor) { init(); //NQF: begin formNum = formNumber //added to accept LHS variable of this type : arr(x) for (var j=0; j< document.forms[formNum].length ; j++) { if ( document.forms[formNum].elements[j].name.toLowerCase() == monthFldName.toLowerCase()) monthFld = "elements["+j+"]"; if ( document.forms[formNum].elements[j].name.toLowerCase() == dateFldname.toLowerCase() ) dateFld = "elements["+j+"]"; if ( document.forms[formNum].elements[j].name.toLowerCase() == yearFldName.toLowerCase() ) yearFld = "elements["+j+"]"; } //NQF: end windowOptions = "toolbar=no,location=no,directories=no,status=no,menubar=no,resizable=yes,copyhistory=yes,width=300,height=200"; // calendarWindow = this.open("","calendarWindow",windowOptions); calendarWindow = this.open("../index/calendar.html","calendarWindow",windowOptions); calendarWindow.callingForm = this; redraw(tableColor); } // repaint the calendar function redraw(tableColor) { calendarWindow.callingForm = this; //Y2K Browser compatibility issues. getYear() function works for IE.. but had to be //altered to appear correctly for Netscape. if (navigator.appName =='Netscape' ) { newYear = today.getYear(); if (newYear <= 1900) newYear = 1900 + newYear; } else newYear = today.getYear(); firstOfMonth = new Date(newYear,dispMonth,1); //End Y2K Browser fix. calendarWindow.document.open(); drawCalendar(firstOfMonth, tableColor); calendarWindow.document.write(htmlBuffer); calendarWindow.document.close(); calendarWindow.callingForm = this; calendarWindow.focus(); } // fill the calling forms date and month function fillDate(filler, filler1) { var m = monthNum; var d = filler; var y = filler1; eval("document.forms[" + formNum + "]." + monthFld + ".value=" + m); eval("document.forms[" + formNum + "]." + dateFld + ".value=" + d); eval("document.forms[" + formNum + "]." + yearFld + ".value=" + filler1); calendarWindow.close(); } // set the month function changeMonth (increment, tableColor) { var loopNumTimes = increment; if( loopNumTimes < 0 ) loopNumTimes = -loopNumTimes; for(i=0; i= 13) || (currMonth-nextMonth >= 13)) // nextMonth = currMonth; dispMonth = nextMonth; document.cookie="dispMonth="+nextMonth; } redraw(tableColor); } // generate the calendar document function drawCalendar (theDate, tableColor) { monthNum = theDate.getMonth() + 1; htmlBuffer = ""; // htmlBuffer += "Calendar"; htmlBuffer += ""; htmlBuffer += "
"; htmlBuffer += "
" htmlBuffer += ""; htmlBuffer += ""; drawBody(theDate); htmlBuffer += "
  "; htmlBuffer += monthName[monthNum]; // getYear returns the year in year - 1900 // this causes ugly display var tempYear = theDate.getYear() if ( tempYear <= 1900 ) tempYear += 1900; htmlBuffer += " " + tempYear; htmlBuffer += " \" onClick=callingForm.changeMonth(1,'" + tableColor + "')> >\" onClick=callingForm.changeMonth(12,'" + tableColor + "')>"; htmlBuffer += "
SMTWTFS
"; htmlBuffer += ""; } // generate the calendar body function drawBody (theDate) { thisMonth = theDate.getMonth(); thisDate = theDate.getDate(); thisYear = theDate.getYear(); if(thisYear <= 1900 ) thisYear += 1900; firstSunday(theDate); for (w=0; w<6; w++) { for (d=0; d<7; d++) { date = theDate.getDate(); htmlBuffer += ""; // skip previous month if (theDate.getMonth() != thisMonth) htmlBuffer += "
"; else { htmlBuffer += ""; htmlBuffer += date; htmlBuffer += ""; } htmlBuffer += ""; // increment the date newTime = theDate.getTime() + msPerDay; theDate.setTime(newTime); // check for DST if (theDate.getHours() != 23) theDate.setTime(newTime + 3600000); } htmlBuffer += ""; } htmlBuffer += ""; } // reset the startdate to get the // previous sunday before the current date // so that the drawing can begin from a sunday function firstSunday (fromDate) { while (fromDate.getDay() != 0) { newTime = fromDate.getTime() - msPerDay; fromDate.setTime(newTime); } } //********************************************************************** //END Calendaring Javascript FUNCTIONS //********************************************************************** // this function checkes to see if a date is valid // it returns an empty string if all is ok, or a non-empty string describing errors // accepts the values of the month, day, and year fields as arguments // assumes that month and day have maxlengths of 2 and that year has a maxlength of 4 // requires a 4-digit year to be passed or an error will be returned // requires the isNumeric() function function checkValidDate(month, day, year) { var daysInMonth = 31; // the most common case - we will change it where needed var emsg = ''; if( !isNumeric(month) || month.length < 1 || month < 1 || month > 12 ) { emsg += 'You entered an invalid month.\n'; return emsg; } // 30 days have September, April, June, and November if( month == '04' || month == '4' ) daysInMonth = 30; else if( month == '06' || month == '6' ) daysInMonth = 30; else if( month == '09' || month == '9' ) daysInMonth = 30; else if( month == '11' ) daysInMonth = 30; else if( month == '02' || month == '2' ) { daysInMonth = 28; // if the year is divisible by 400 or divisible by 4 and not by 100, it's a leap year if( year % 400 == 0 ) daysInMonth = 29; else if( year % 4 == 0 && year % 100 != 0 ) daysInMonth = 29; } if( !isNumeric(day) || day.length < 1 || day < 1 || day > daysInMonth ) emsg += 'You entered an invalid day - only 1-' + daysInMonth + ' are valid.\n'; if( !isNumeric(year) || year.length != 4 ) emsg += 'Please enter a valid 4-digit year.\n'; return emsg; } // returns true if the character passed is a digit, false otherwise function isDigit(c) { return ((c >= "0") && (c <= "9")); } // this function returns true if all characters in field are numeric, false otherwise // requires the isDigit function function isNumeric(field) { for (i = 0; i < field.length; i++) { var c = field.charAt(i); if (!isDigit(c)) return false; } return true; }