// how reliable is this test?
         isIE = (document.all ? true : false);
   isDOM = (document.getElementById ? true : false);

         // Initialize arrays.
         var months = new Array("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul",
   "Aug", "Sep", "Oct", "Nov", "Dec");
         var daysInMonth = new Array(31, 28, 31, 30, 31, 30, 31, 31,
            30, 31, 30, 31);
   var displayMonth = new Date().getMonth();
   var displayYear = new Date().getFullYear();
   var displayDivName;
   var displayElement;

         function getDays(month, year) {
            // Test for leap year when February is selected.
            if (1 == month)
               return ((0 == year % 4) && (0 != (year % 100))) ||
                  (0 == year % 400) ? 29 : 28;
            else
               return daysInMonth[month];
         }

         function getToday() {
            // Generate today's date.
            this.now = new Date();
            this.year = this.now.getFullYear();
            this.month = this.now.getMonth();
            this.day = this.now.getDate();
         }

         // Start with a calendar for today.
         today = new getToday();

         function newCalendar(eltName,attachedElement) {
      if (attachedElement) {
         if (displayDivName && displayDivName != eltName) hideElement(displayDivName);
         displayElement = attachedElement;
      }
      displayDivName = eltName;
            today = new getToday();
            var parseYear = parseInt(displayYear + '');
            var newCal = new Date(parseYear,displayMonth,1);
            var day = -1;
            var startDayOfWeek = newCal.getDay();
            if ((today.year == newCal.getFullYear()) &&
                  (today.month == newCal.getMonth()))
      {
               day = today.day;
            }
            var intDaysInMonth =
               getDays(newCal.getMonth(), newCal.getFullYear());
            var daysGrid = makeDaysGrid(startDayOfWeek,day,intDaysInMonth,newCal,eltName)
      if (isIE) {
         var elt = document.all[eltName];
         elt.innerHTML = daysGrid;
            } else if (isDOM) {
         var elt = document.getElementById(eltName);
         elt.innerHTML = daysGrid;
      } else {
         var elt = document.layers[eltName].document;
         elt.open();
         elt.write(daysGrid);
         elt.close();
      }
   }

   function incMonth(delta,eltName) {
     displayMonth += delta;
     if (displayMonth >= 12) {
       displayMonth = 0;
       incYear(1,eltName);
     } else if (displayMonth <= -1) {
       displayMonth = 11;
       incYear(-1,eltName);
     } else {
       newCalendar(eltName);
     }
   }

   function incYear(delta,eltName) {
     displayYear = parseInt(displayYear + '') + delta;
     newCalendar(eltName);
   }

   function makeDaysGrid(startDay,day,intDaysInMonth,newCal,eltName) {
      var daysGrid;
      var month = newCal.getMonth();
      var year = newCal.getFullYear();
      var isThisYear = (year == new Date().getFullYear());
      var isThisMonth = (day > -1)
      daysGrid = '<table border=1 cellspacing=0 cellpadding=2><tr><td bgcolor=#ffffff nowrap>';
      daysGrid += '<font face="courier new, courier" size=2>';
      daysGrid += '<a href="javascript:hideElement(\'' + eltName + '\')">x</a>';
      daysGrid += '&nbsp;&nbsp;';
      daysGrid += '<a href="javascript:incMonth(-1,\'' + eltName + '\')">&laquo; </a>';

      daysGrid += '<b>';
      if (isThisMonth) { daysGrid += '<font color=red>' + months[month] + '</font>'; }
      else { daysGrid += months[month]; }
      daysGrid += '</b>';

      daysGrid += '<a href="javascript:incMonth(1,\'' + eltName + '\')"> &raquo;</a>';
      daysGrid += '&nbsp;&nbsp;&nbsp;';
      daysGrid += '<a href="javascript:incYear(-1,\'' + eltName + '\')">&laquo; </a>';

      daysGrid += '<b>';
      if (isThisYear) { daysGrid += '<font color=red>' + year + '</font>'; }
      else { daysGrid += ''+year; }
      daysGrid += '</b>';

      daysGrid += '<a href="javascript:incYear(1,\'' + eltName + '\')"> &raquo;</a><br>';
      daysGrid += '&nbsp;Su Mo Tu We Th Fr Sa&nbsp;<br>&nbsp;';
      var dayOfMonthOfFirstSunday = (7 - startDay + 1);
      for (var intWeek = 0; intWeek < 6; intWeek++) {
         var dayOfMonth;
         for (var intDay = 0; intDay < 7; intDay++) {
           dayOfMonth = (intWeek * 7) + intDay + dayOfMonthOfFirstSunday - 7;
     if (dayOfMonth <= 0) {
             daysGrid += "&nbsp;&nbsp; ";
     } else if (dayOfMonth <= intDaysInMonth) {
       var color = "blue";
       if (day > 0 && day == dayOfMonth) color="red";
       daysGrid += '<a href="javascript:setDay(';
       daysGrid += dayOfMonth + ',\'' + eltName + '\')" '
       daysGrid += 'style="color:' + color + '">';
       var dayString = dayOfMonth + "</a> ";
       if (dayString.length == 6) dayString = '0' + dayString;
       daysGrid += dayString;
     }
         }
         if (dayOfMonth < intDaysInMonth) daysGrid += "<br>&nbsp;";
      }
      return daysGrid + "</td></tr></table>";
   }

   function setDay(day,eltName) {
     //displayElement.value = (displayMonth + 1) + "/" + day + "/" + displayYear; //American Version
     displayElement.value =  day + "/" + (displayMonth + 1) + "/" + displayYear; //UK Version
      
     hideElement(eltName);
   }