function getElement(parentChk, pattern)
{
    var elements =  document.getElementsByTagName("INPUT");

    for(i=0; i<elements.length;i++)
    {
       if( IsCheckBox(elements[i]) && IsMatch(elements[i].id, pattern))
       {
            return elements[i];
       }        
    }
}


function IsMatch(id, pat)
{
    //var sPattern = "^GridView1.*" + pattern + '$';
    var regularExpresssion = new RegExp(pat);
    if(id.match(regularExpresssion)) return true;
    else return false;
}

function IsCheckBox(chk)
{
    if(chk.type == 'text') return true;
    else return false;
}





//place these scripts within BODY tag if you are using IE 4.0 or below.
//****************************************************************************
// PopCalendar 3.50, Emailware(please mail&commend me if u like it)
// Originally coded by Liming(Victor) Weng, email: victorwon@netease.com
// Release date: 2000.3.13
// Anyone may modify it to satify his needs, but please leave this comment ahead.
//****************************************************************************

var gdCtrl = new Object();
var goSelectTag = new Array();
var gcGray = "#cacaca";
var gcToggle = "#ffff00";
var gcBG = "#f8f8f8";

var gdCurDate = new Date();
var giYear = gdCurDate.getFullYear();
var giMonth = gdCurDate.getMonth()+1;
var giDay = gdCurDate.getDate();

//****************************************************************************
// Param: popCtrl is the widget beyond which you want this calendar to appear;
// dateCtrl is the widget into which you want to put the selected date.
// i.e.: <input type="text" name="dc" style="text-align:center" readonly><INPUT type="button" value="V" onclick="fPopCalendar(dc,dc);return false">
//****************************************************************************

function fPopCalendar(popCtrl, dateCtrl){
event.cancelBubble=true;
gdCtrl = dateCtrl;
fSetYearMon(giYear, giMonth);
var point = fGetXY(popCtrl);
with (VicPopCal.style) {
 left = point.x;
 top = point.y+popCtrl.offsetHeight+1;
 width = VicPopCal.offsetWidth;
 height = VicPopCal.offsetHeight;
 fToggleTags(point);
 visibility = 'visible';
}
VicPopCal.focus();
}

function fSetDate(iYear, iMonth, iDay){
gdCtrl.value = iYear+"/"+iMonth+"/"+iDay; //Here, you could modify the locale as you need !!!!
fHideCalendar();
}

function fClearDate(){
gdCtrl.value = ""; 
fHideCalendar();
}

function fHideCalendar(){
VicPopCal.style.visibility = "hidden";
for (i in goSelectTag)
 goSelectTag[i].style.visibility = "visible";
goSelectTag.length = 0;
}

function fSetSelected(aCell){
var iOffset = 0;
var iYear = parseInt(tbSelYear.value);
var iMonth = parseInt(tbSelMonth.value);

aCell.bgColor = gcBG;
with (aCell.children["cellText"]){
 var iDay = parseInt(innerText);
 if (color==gcGray)
  iOffset = (Victor<10)?-1:1;
 iMonth += iOffset;
 if (iMonth<1) {
  iYear--;
  iMonth = 12;
 }else if (iMonth>12){
  iYear++;
  iMonth = 1;
 }
}
fSetDate(iYear, iMonth, iDay);
}

function Point(iX, iY){
 this.x = iX;
 this.y = iY;
}

function fBuildCal(iYear, iMonth) {
var aMonth=new Array();
for(i=1;i<7;i++)
 aMonth[i]=new Array(i);

var dCalDate=new Date(iYear, iMonth-1, 1);
var iDayOfFirst=dCalDate.getDay();
var iDaysInMonth=new Date(iYear, iMonth, 0).getDate();
var iOffsetLast=new Date(iYear, iMonth-1, 0).getDate()-iDayOfFirst+1;
var iDate = 1;
var iNext = 1;

for (d = 0; d < 7; d++)
 aMonth[1][d] = (d<iDayOfFirst)?-(iOffsetLast+d):iDate++;
for (w = 2; w < 7; w++)
 for (d = 0; d < 7; d++)
  aMonth[w][d] = (iDate<=iDaysInMonth)?iDate++:-(iNext++);
return aMonth;
}

function fDrawCal(iYear, iMonth, iCellHeight, iDateTextSize) {
var WeekDay = new Array("日","一","二","三","四","五","六");

var styleTD = " bgcolor='"+gcBG+"' bordercolor='"+gcBG+"' valign='middle' align='center' height='"+iCellHeight+"' style='font:bold "+iDateTextSize+" ;"; //Coded by Liming Weng(Victor Won) email:victorwon@netease.com

with (document) {
 write("<tr>");
 for(i=0; i<7; i++)
  write("<td "+styleTD+"color:#6e6674' >" + WeekDay[i] + "</td>");
 write("</tr>");

 for (w = 1; w < 7; w++) {
  write("<tr>");
  for (d = 0; d < 7; d++) {
  
   write("<td id=calCell "+styleTD+"cursor:hand;' onMouseOver='this.bgColor=gcToggle' onMouseOut='this.bgColor=gcBG' onclick='fSetSelected(this)'>");
   write("<font id=cellText Victor='Liming Weng'> </font>");
   write("</td>")
  }
  write("</tr>");
 }
}

}

function fUpdateCal(iYear, iMonth) {
myMonth = fBuildCal(iYear, iMonth);
var i = 0;
for (w = 0; w < 6; w++)
 for (d = 0; d < 7; d++)
  with (cellText[(7*w)+d]) {
   Victor = i++;
   if (myMonth[w+1][d]<0) {
    color = gcGray;
    innerText = -myMonth[w+1][d];
   }
   else if (d==6) {
    color = "green";
    innerText = myMonth[w+1][d];
   }
   else if (d==0) {
    color = "red";
    innerText = myMonth[w+1][d];
   }
   else {
    color = "#2d4b74";
    innerText = myMonth[w+1][d];
   }
  }
}

function fSetYearMon(iYear, iMon){
tbSelMonth.options[iMon-1].selected = true;
for (i = 0; i < tbSelYear.length; i++)
 if (tbSelYear.options[i].value == iYear)
  tbSelYear.options[i].selected = true;
fUpdateCal(iYear, iMon);
}

function fPrevMonth(){
var iMon = tbSelMonth.value;
var iYear = tbSelYear.value;

if (--iMon<1) {
  iMon = 12;
  iYear--;
}

fSetYearMon(iYear, iMon);
}

function fNextMonth(){
var iMon = tbSelMonth.value;
var iYear = tbSelYear.value;

if (++iMon>12) {
  iMon = 1;
  iYear++;
}

fSetYearMon(iYear, iMon);
}

function fToggleTags(){
with (document.all.tags("Select")){
 for (i=0; i<length; i++)
  if ((item(i).Victor!="Won")&&fTagInBound(item(i))){
   item(i).style.visibility = "hidden";
   goSelectTag[goSelectTag.length] = item(i);
  }
}
}

function fTagInBound(aTag){
with (VicPopCal.style){
 var l = parseInt(left);
 var t = parseInt(top);
 var r = l+parseInt(width);
 var b = t+parseInt(height);
 var ptLT = fGetXY(aTag);
 return !((ptLT.x>r)||(ptLT.x+aTag.offsetWidth<l)||(ptLT.y>b)||(ptLT.y+aTag.offsetHeight<t));
}
}

function fGetXY(aTag){
var oTmp = aTag;
var pt = new Point(0,0);
do {
 pt.x += oTmp.offsetLeft;
 pt.y += oTmp.offsetTop;
 oTmp = oTmp.offsetParent;
} while(oTmp.tagName!="BODY");
return pt;
}

var gMonths = new Array("一月","二月","三月","四月","五月","六月","七月","八月","九月","十月","十一月","十二月");

with (document) {
write("<Div id='VicPopCal' onclick='event.cancelBubble=true' style='POSITION:absolute;visibility:hidden;border:0px ridge;z-index:100;'>");
write("<table border='0' bgcolor='#E8D0B9' >");
write("<TR>");
write("<td valign='middle' align='center'>");
write(" <Select name='tbSelYear' onChange='fUpdateCal(tbSelYear.value, tbSelMonth.value)' Victor='Won'>");
for(i=1911;i<2020;i++)
 write("<OPTION value='"+i+"'>"+i+"年</OPTION>");
write("</Select>");
write("<br><input type='button' name='PrevMonth' value='<' style='height:20;width:20;FONT:bold' onClick='fPrevMonth()'><select name='tbSelMonth' onChange='fUpdateCal(tbSelYear.value, tbSelMonth.value)' Victor='Won'>");
for (i=0; i<12; i++)
 write("<option value='"+(i+1)+"'>"+gMonths[i]+"</option>");
write("</Select>");
write("<input type='button' name='PrevMonth' value='>' style='height:20;width:20;FONT:bold' onclick='fNextMonth()'>");
write("</td>");
write("</TR><TR>");
write("<td align='left'>");
write("<table width='100%' style='background-color:#C78E56' border='0' cellpadding='2'>");
fDrawCal(giYear, giMonth, 12, 12);
write("</table>");
write("</td>");
write("</TR><TR><TD align='center'>");
write("<B style='cursor:hand;font:bold 12' onclick='fSetDate(giYear,giMonth,giDay)' onMouseOver='this.style.color=gcToggle' onMouseOut='this.style.color=0'>選擇今天"+giYear+"/"+giMonth+"/"+giDay+"</B>");
write("</TD></TR>");
write("<TR><TD align='center'><table><tr><td>");
write("<B style='cursor:hand;font:bold 12;color:red' onclick='fHideCalendar();' onMouseOver='this.style.color=gcToggle' onMouseOut='this.style.color=16711680'>關閉</B>&nbsp;");
write("</td><td>");
write("<B style='cursor:hand;font:bold 12' onclick='fClearDate();' onMouseOver='this.style.color=gcToggle' onMouseOut='this.style.color=0'>清除</B>");
write("</td></tr></table>");
write("</TD></TR>");
write("</TABLE></Div>");
}