I have problem in main page,when i open my web apge
The Following Error show .

Line:8
Char :3594
Error: 'd.getElementById(...)'is null or not object
Code:0
Url"http://localhost......
 

wheres this code is exit on seperate page.

Here is complete code for this page

var thisDate = 1;                            // Tracks current date being written in calendar
var wordMonth = new Array("January","February","March","April","May","June","July","August","September","October","November","December");
var today = new Date();                            // Date object to store the current date
var todaysDay = today.getDay() + 1;                    // Stores the current day number 1-7
var todaysDate = today.getDate();                    // Stores the current numeric date within the month
var todaysMonth = today.getUTCMonth() + 1;                // Stores the current month 1-12
var todaysYear = today.getFullYear();                    // Stores the current year
var monthNum = todaysMonth;                        // Tracks the current month being displayed
var yearNum = todaysYear;                        // Tracks the current year being displayed
var firstDate = new Date(String(monthNum)+"/1/"+String(yearNum));    // Object Storing the first day of the current month
var firstDay = firstDate.getUTCDay();                    // Tracks the day number 1-7 of the first day of the current month
var lastDate = new Date(String(monthNum+1)+"/0/"+String(yearNum));    // Tracks the last date of the current month
var numbDays = 0;
var calendarString = "";
var eastermonth = 0;
var easterday = 0;


function changedate(buttonpressed) {
    if (buttonpressed == "prevyr") yearNum--;
    else if (buttonpressed == "nextyr") yearNum++;
    else if (buttonpressed == "prevmo") monthNum--;
    else if (buttonpressed == "nextmo") monthNum++;
    else  if (buttonpressed == "return") {
        monthNum = todaysMonth;
        yearNum = todaysYear;
    }

    if (monthNum == 0) {
        monthNum = 12;
        yearNum--;
    }
    else if (monthNum == 13) {
        monthNum = 1;
        yearNum++
    }

    lastDate = new Date(String(monthNum+1)+"/0/"+String(yearNum));
    numbDays = lastDate.getDate();
    firstDate = new Date(String(monthNum)+"/1/"+String(yearNum));
    firstDay = firstDate.getDay() + 1;
    createCalendar();
    return;
}


function easter(year) {
// feed in the year it returns the month and day of Easter using two GLOBAL variables: eastermonth and easterday
var a = year % 19;
var b = Math.floor(year/100);
var c = year % 100;
var d = Math.floor(b/4);
var e = b % 4;
var f = Math.floor((b+8) / 25);
var g = Math.floor((b-f+1) / 3);
var h = (19*a + b - d - g + 15) % 30;
var i = Math.floor(c/4);
var j = c % 4;
var k = (32 + 2*e + 2*i - h - j) % 7;
var m = Math.floor((a + 11*h + 22*k) / 451);
var month = Math.floor((h + k - 7*m + 114) / 31);
var day = ((h + k - 7*m +114) % 31) + 1;
eastermonth = month;
easterday = day;
}


function createCalendar() {
    calendarString = '';
    var daycounter = 0;
    calendarString += '<table width="312" border="1" cellpadding="0" cellspacing="1">';
    calendarString += '<tr>';
    calendarString += '<td align="center" valign="center" width="40" height="40"><a href="#" onMouseOver="document.PrevYr.src='images/PrevYrOn40x40.jpg';" onMouseOut="document.PrevYr.src='images/PrevYrOff40x40.jpg';" onClick="changedate('prevyr')"><img name="PrevYr" src="images/PrevYrOff40x40.jpg" width="40" height="40" border="0" alt="Prev Yr"/></a></td>';
    calendarString += '<td align="center" valign="center" width="40" height="40"><a href="#" onMouseOver="document.PrevMo.src='images/PrevMoOn40x40.jpg';" onMouseOut="document.PrevMo.src='images/PrevMoOff40x40.jpg';" onClick="changedate('prevmo')"><img name="PrevMo" src="images/PrevMoOff40x40.jpg" width="40" height="40" border="0" alt="Prev Mo"/></a></td>';
    calendarString += '<td bgcolor="#C8C896" align="center" valign="center" width="128" height="40" colspan="3"><b>' + wordMonth[monthNum-1] + '  ' + yearNum + '</b></td>';
    calendarString += '<td align="center" valign="center" width="40" height="40"><a href="#" onMouseOver="document.NextMo.src='images/NextMoOn40x40.jpg';" onMouseOut="document.NextMo.src='images/NextMoOff40x40.jpg';" onClick="changedate('nextmo')"><img name="NextMo" src="images/NextMoOff40x40.jpg" width="40" height="40" border="0" alt="Next Mo"/></a></td>';
    calendarString += '<td align="center" valign="center" width="40" height="40"><a href="#" onMouseOver="document.NextYr.src='images/NextYrOn40x40.jpg';" onMouseOut="document.NextYr.src='images/NextYrOff40x40.jpg';" onClick="changedate('nextyr')"><img name="NextYr" src="images/NextYrOff40x40.jpg" width="40" height="40" border="0" alt="Next Yr"/></a></td>';
    calendarString += '</tr>';
    calendarString += '<tr>';
    calendarString += '<td bgcolor="#DDDDDD" align="center" valign="center" width="40" height="22">Sun</td>';
    calendarString += '<td bgcolor="#DDDDDD" align="center" valign="center" width="40" height="22">Mon</td>';
    calendarString += '<td bgcolor="#DDDDDD" align="center" valign="center" width="40" height="22">Tue</td>';
    calendarString += '<td bgcolor="#DDDDDD" align="center" valign="center" width="40" height="22">Wed</td>';
    calendarString += '<td bgcolor="#DDDDDD" align="center" valign="center" width="40" height="22">Thu</td>';
    calendarString += '<td bgcolor="#DDDDDD" align="center" valign="center" width="40" height="22">Fri</td>';
    calendarString += '<td bgcolor="#DDDDDD" align="center" valign="center" width="40" height="22">Sat</td>';
    calendarString += '</tr>';

    thisDate == 1;

    for (var i = 1; i <= 6; i++) {
        calendarString += '<tr>';
        for (var x = 1; x <= 7; x++) {
            daycounter = (thisDate - firstDay)+1;
            thisDate++;
            if ((daycounter > numbDays) || (daycounter < 1)) {
                calendarString += '<td align="center" bgcolor="#888888" height="30" width="40"> </td>';
            } else {
                if (checkevents(daycounter,monthNum,yearNum,i,x) || ((todaysDay == x) && (todaysDate == daycounter) && (todaysMonth == monthNum))){
                    if ((todaysDay == x) && (todaysDate == daycounter) && (todaysMonth == monthNum)) {
                        calendarString += '<td align="center" bgcolor="#AAFFAA" height="30" width="40"><a href="javascript:showevents(' + daycounter + ',' + monthNum + ',' + yearNum + ',' + i + ',' + x + ')">' + daycounter + '</a></td>';
                    }
                     else    calendarString += '<td align="center" bgcolor="#FFFFC8" height="30" width="40"><a href="javascript:showevents(' + daycounter + ',' + monthNum + ',' + yearNum + ',' + i + ',' + x + ')">' + daycounter + '</a></td>';
                } else {
                    calendarString += '<td align="center" bgcolor="#DDFFFF" height="30" width="40">' + daycounter + '</td>';
                }
            }
        }
        calendarString += '</tr>';
    }

    calendarString += '<tr><td colspan="7" nowrap align="center" valign="center" bgcolor="#C8C896" width="280" height="22"><a href="javascript:changedate('return')"><b>Show Current Date</b></a></td></tr></table>';

    var object=document.getElementById('calendar');
    object.innerHTML= calendarString;
    thisDate = 1;
}


function checkevents(day,month,year,week,dayofweek) {
var numevents = 0;
var floater = 0;

    for (var i = 0; i < events.length; i++) {
        if (events[0] == "W") {
            if ((events[2] == dayofweek)) numevents++;
        }
        else if (events[0] == "Y") {
            if ((events[2] == day) && (events[1] == month)) numevents++;
        }
        else if (events[0] == "F") {
            if ((events[1] == 3) && (events[2] == 0) && (events[3] == 0) ) {
                easter(year);
                if (easterday == day && eastermonth == month) numevents++;
            } else {
                floater = floatingholiday(year,events[1],events[2],events[3]);
                if ((month == 5) && (events[1] == 5) && (events[2] == 4) && (events[3] == 2)) {
                    if ((floater + 7 <= 31) && (day == floater + 7)) {
                        numevents++;
                    } else if ((floater + 7 > 31) && (day == floater)) numevents++;
                } else if ((events[1] == month) && (floater == day)) numevents++;
            }
        }
        else if ((events[2] == day) && (events[1] == month) && (events[3] == year)) {
            numevents++;
        }
    }

    if (numevents == 0) {
        return false;
    } else {
        return true;
    }
}


function showevents(day,month,year,week,dayofweek) {
var theevent = "";
var floater = 0;

    for (var i = 0; i < events.length; i++) {
        // First we'll process recurring events (if any):
        if (events[0] != "") {
            if (events[0] == "D") {
            }
            if (events[0] == "W") {
                if ((events[2] == dayofweek)) {
                theevent += "Events of: n" + month +'/'+ day +'/'+ year + 'n';
                theevent += events[6] + 'n';
                <!--theevent += 'Start Time: ' + events[4] + 'n';-->
                <!--theevent += 'Ending Time: ' + events[5] + 'n'; -->
                <!--theevent += 'Description: ' + events[7] + 'n';-->
                theevent += 'n -------------- nn';
                document.forms.eventform.eventlist.value = theevent;
                }
            }
            if (events[0] == "M") {
            }
            if (events[0] == "Y") {
                if ((events[2] == day) && (events[1] == month)) {
                theevent += "Events of: n" + month +'/'+ day +'/'+ year + 'n';
                theevent += events[6] + 'n';
                <!--theevent += 'Start Time: ' + events[4] + 'n';-->
                <!--theevent += 'Ending Time: ' + events[5] + 'n';-->
                <!--theevent += 'Description: ' + events[7] + 'n';-->
                theevent += 'n -------------- nn';
                document.forms.eventform.eventlist.value = theevent;
                }
            }
            if (events[0] == "F") {
                if ((events[1] == 3) && (events[2] == 0) && (events[3] == 0) ) {
                    if (easterday == day && eastermonth == month) {
                        theevent += "Events of: n" + month +'/'+ day +'/'+ year + 'n';
                        theevent += events[6] + 'n';
                        //theevent += 'Start Time: ' + events[4] + 'n';
                        //theevent += 'Ending Time: ' + events[5] + 'n';
                        //theevent += 'Description: ' + events[7] + 'n';
                        theevent += 'n -------------- nn';
                        document.forms.eventform.eventlist.value = theevent;
                    }
                } else {
                    floater = floatingholiday(year,events[1],events[2],events[3]);

                    if ((month == 5) && (events[1] == 5) && (events[2] == 4) && (events[3] == 2)) {
                        if ((floater + 7 <= 31) && (day == floater + 7)) {
                            theevent += "Events of: n" + month +'/'+ day +'/'+ year + 'n';
                            theevent += events[6] + 'n';
                            //theevent += 'Start Time: ' + events[4] + 'n';
                            //theevent += 'Ending Time: ' + events[5] + 'n';
                            //theevent += 'Description: ' + events[7] + 'n';
                            theevent += 'n -------------- nn';
                            document.forms.eventform.eventlist.value = theevent;
                        } else if ((floater + 7 > 31) && (day == floater)) {
                            theevent += "Events of: n" + month +'/'+ day +'/'+ year + 'n';
                            theevent += events[6] + 'n';
                            //theevent += 'Start Time: ' + events[4] + 'n';
                            //theevent += 'Ending Time: ' + events[5] + 'n';
                            //theevent += 'Description: ' + events[7] + 'n';
                            theevent += 'n -------------- nn';
                            document.forms.eventform.eventlist.value = theevent;
                        }
                    } else if ((events[1] == month) && (floater == day)) {
                        theevent += "Events of: n" + month +'/'+ day +'/'+ year + 'n';
                        theevent += events[6] + 'n';
                        //theevent += 'Start Time: ' + events[4] + 'n';
                        //theevent += 'Ending Time: ' + events[5] + 'n';
                        //theevent += 'Description: ' + events[7] + 'n';
                        theevent += 'n -------------- nn';
                        document.forms.eventform.eventlist.value = theevent;
                    }
                }
        }
        }
        // Now we'll process any One Time events happening on the matching month, day, year:
        else if ((events[2] == day) && (events[1] == month) && (events[3] == year)) {
            theevent += "Events of: n" + month +'/'+ day +'/'+ year + 'n';
            theevent += events[6] + 'n';
            //theevent += 'Start Time: ' + events[4] + 'n';
            //theevent += 'Ending Time: ' + events[5] + 'n';
            //theevent += 'Description: ' + events[7] + 'n';
            theevent += 'n ------------------------------------------------ nn';
            document.forms.eventform.eventlist.value = theevent;
        }
    }
    if (theevent == "") document.forms.eventform.eventlist.value = 'No events to show.';
}


function floatingholiday(targetyr,targetmo,cardinaloccurrence,targetday) {
// Floating holidays/events of the events.js file uses:
//    the Month field for the Month (here it becomes the targetmo field)
//    the Day field as the Cardinal Occurrence  (here it becomes the cardinaloccurrence field)
//        1=1st, 2=2nd, 3=3rd, 4=4th, 5=5th, 6=6th occurrence of the day listed next
//    the Year field as the Day of the week the event/holiday falls on  (here it becomes the targetday field)
//        1=Sunday, 2=Monday, 3=Tuesday, 4=Wednesday, 5=Thurday, 6=Friday, 7=Saturday
//    example: "F",    "1",    "3",    "2", = Floating holiday in January on the 3rd Monday of that month.
//
// In our code below:
//     targetyr is the active year
//     targetmo is the active month (1-12)
//     cardinaloccurrence is the xth occurrence of the targetday (1-6)
//     targetday is the day of the week the floating holiday is on
//        0=Sun; 1=Mon; 2=Tue; 3=Wed; 4=Thu; 5=Fri; 6=Sat
//        Note: subtract 1 from the targetday field if the info comes from the events.js file
//
// Note:
//    If Memorial Day falls on the 22nd, 23rd, or 24th, then we add 7 to the dayofmonth to the result.
//
// Example: targetyr = 2052; targetmo = 5; cardinaloccurrence = 4; targetday = 1
//    This is the same as saying our floating holiday in the year 2052, is during May, on the 4th Monday
//
var firstdate = new Date(String(targetmo)+"/1/"+String(targetyr));    // Object Storing the first day of the current month.
var firstday = firstdate.getUTCDay();    // The first day (0-6) of the target month.
var dayofmonth = 0;    // zero out our calendar day variable.

    targetday = targetday - 1;

    if (targetday >= firstday) {
        cardinaloccurrence--;    // Subtract 1 from cardinal day.
        dayofmonth = (cardinaloccurrence * 7) + ((targetday - firstday)+1);
    } else {
        dayofmonth = (cardinaloccurrence * 7) + ((targetday - firstday)+1);
    }
return dayofmonth;
}

</script>

<!-- ***********************end************************************************** -->
<style type="text/css">
<!--
.style2 {font-weight: bold}
.style3 {
    color: #0000FF;
    font-weight: bold;
}
-->
</style>

</head>
<body bgcolor="white" leftMargin="0" topMargin="0" marginheight="0" marginwidth="0" onLoad="changedate('return')">

<table cellspacing="0"  cellpadding="0" width="925" align="center" border="0">
  <tr>
    <td>

      <table cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
        <tr>
          <td> 
          <!--HEADER-->
          <!--#include file="../includes/header.asp" -->          <!--HEADER-->          </td>
        </tr>

        <tr bgColor="#ffffff">
          <td colspan="2" height="20" bgcolor="#edf3ff" style="border-bottom:solid 1px #B7BEDA;">   You are here: <strong><a href="<%=path%>index.asp">Home</a> >calander</strong></td>
        </tr>
      </table>
 
      <table cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
        <tr>
        <!-- Left column -->
          <td width="126" bgColor="#edf3ff" valign="top" style="border-right:solid 1px #B7BEDA;">
         
                  </td>

          <!-- Middle column -->
      <td valign="top" bgColor="#ffffff">
     
      

    <blockquote>  
<br/>
        <h2 align="center">Calendar</h2>
</blockquote>
        <table width="100%" border="0" cellspacing="0" cellpadding="5" class="hry">
         
          <tr>
          <td>
           
            </td>
          </tr>
        </table>
        <table width="100%" border="0" cellspacing="0" cellpadding="5" class="hry">
          <tr>
            <td bgcolor="#edf3ff">
            <table width="100%" border="0" cellspacing="0" cellpadding="0">
                  
                    <tr>
                      <td>
                      <!--************************************** Calendar Code *********************************** -->
                      <p align="center" class="style3"> </p>

                      <center>
                <table id="evtcal" border="0" cellpadding="0" cellspacing="0" width="500">
                <tbody>
                <tr>
                <td style="padding: 3px;" align="center" bgcolor="#c6def8" valign="top" width="314">
                <div id="calendar"><!--  Dynamically Filled --></div>
                You can move to a different month or year by clicking on the buttons or return to today's date by clicking "Show Current Date".</td>
            <td width="10"> </td>
            <td style="padding: 3px;" align="center" bgcolor="#c6def8" valign="top" width="260" ><div align="center"><b>Intructions:</b><br />
              Click a     highlighted date on the calendar to see a list of events on that day in the box below.<br />
              <br />
              </div>
              <b><u>Events</u></b>                <form id="eventform" name="eventform" action="#" method="get">
                  <textarea name="eventlist" cols="50" rows="11" wrap="soft" class="style3">Please click on any date and see the events regarding to city school.</textarea>
                  </form></td>
        </tr>
    </tbody>
</table>
</center>
                     
                      <!-- *************************************END Calendar Code ********************************* -->
                      </td>
                    </tr>
                    <!--
                    <tr>
                      <td class="heading">Feedback </td>
                    </tr>
                    <tr>
                      <td><img src="../images/spacer.gif" width="14" height="14"></td>
                    </tr>
                    -->
                    <tr>
                      <td class="all">
                     
                    </td>
                     
                    </tr>
                   
                  
                   
                  </table>
            </td>
          </tr>
         
        </table>
        <!--<table width="100%" border="0" cellspacing="0" cellpadding="5" class="hry">
          <tr>
            <td>Our Inspection and Quality Assurance department ensures standardisation of our administrative business processes, making us a premier institution of an international repute.</td>
          </tr>
       
        </table>-->
       
        </div>      </td>

      <!-- Right column -->
        <td width="126" bgColor="#edf3ff" valign="top" style="border-left:solid 1px #B7BEDA;">
   
      
 
     
      </td>
        </tr>
       
       
</table>

</td>
</tr>
</table>
</body>
</html>

please reply me i m waiting here