var gdCtrl = new Object();
var nfCtrl = new Object();
var goSelectTag = new Array();
var gcGray = "#808080";
var gcToggle = "#E5BEBE";
var gcBG = "#D0DFFE";
var gdCurDate = new Date();
var giYear = gdCurDate.getFullYear();
var giMonth = gdCurDate.getMonth()+1;
var giDay = gdCurDate.getDate();

function fClosePad() {
	VicPopCal.style.visibility = "hidden";
    with (document.all.tags("SELECT")){
    for (i=0; i<length; i++)
        if ((item(i).Victor!="Won")&&fTagInBound(item(i))){
            item(i).style.visibility = "visible";
        }
  }
  if (nfCtrl!=null)
	nfCtrl.focus();
}

function fClearDate(){
  fClosePad();
  gdCtrl.value = "";
  if (nfCtrl!=null)
    nfCtrl.focus();
}

function fSetDate(iYear, iMonth, iDay){
  fClosePad();
  if (iMonth<10)
  {
	  gdCtrl.value = iYear+"-0"+iMonth+"-"+iDay;
	  if (iDay<10)
	  {
		  gdCtrl.value = iYear+"-0"+iMonth+"-0"+iDay;
	  }
  }
  else if (iDay<10)
  {
	  gdCtrl.value = iYear+"-"+iMonth+"-0"+iDay; 
  }
  else
  	gdCtrl.value = iYear+"-"+iMonth+"-"+iDay;
  if (nfCtrl!=null)
	nfCtrl.focus();
}

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

  self.event.cancelBubble = true;
  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 = " class='select_date_table' ";            //Coded by Liming Weng(Victor Won)  email:victorwon@netease.com

  with (document) {
	write("<tr>");
	for(i=0; i<7; i++)
		write("<td "+styleTD+"color:#990099' >" + WeekDay[i] + "</td>");
	write("</tr>");

  	for (w = 1; w < 7; w++) {
		write("<tr>");
		for (d = 0; d < 7; d++) {
			write("<td id=calCell "+styleTD+" style='cursor:hand;' onMouseOver='this.style.background=gcToggle;' onMouseOut='this.style.background=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{
				color = ((d==0)||(d==6))?"red":"black";
                calCell[(7*w)+d].style.background = "#D0DFFE url()";
				if (tbSelYear.value==gdCurDate.getFullYear() && tbSelMonth.value==gdCurDate.getMonth()+1 && myMonth[w+1][d]==gdCurDate.getDate())
				{
					color = "blue";
                    calCell[(7*w)+d].style.background = "url(../images/circle.gif)";
				}
				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";
 		}
  }
}

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!="DIV" && (oTmp.id!="content" || oTmp.id!="content1"));
    pt.x += oTmp.offsetLeft+10+gdleft;
    pt.y += oTmp.offsetTop;
	if (document.getElementById("head_back")!=null)
        pt.y += 95;
  return pt;
}

// Main: 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,nextfield){
  popCtrl = document.getElementsByName(popCtrl)[0];
  dateCtrl = document.getElementsByName(dateCtrl)[0];
    nfCtrl = document.getElementsByName(nextfield)[0];
  gdCtrl = dateCtrl;
  fSetYearMon(giYear, giMonth);
  var point = fGetXY(popCtrl);
  var datescreenwidth = document.body.offsetWidth-20;
  with (VicPopCal.style) {
  	left =point.x;  	
		top  = point.y+popCtrl.offsetHeight-60;
		width = 180;
		height = 204;
	
	if ((VicPopCal.offsetWidth+point.x)>datescreenwidth)
		left = datescreenwidth-VicPopCal.offsetWidth;
	point.x = left;
	fToggleTags();
	visibility = 'visible';
  }
  VicPopCal.focus();
}

function fHideCal(){
  var oE = window.event;
  var clientW = document.body.offsetWidth;
  var clientH = document.body.offsetHeight;
  if (window.parent!=null && window.frameElement!=null) {
  	clientW = window.frameElement.offsetWidth;
  	clientH = window.frameElement.offsetHeight;
  } else if (window.parent!=null && window.dialogWidth!=null) {
  	clientW = parseInt(window.dialogWidth.substr(0,window.dialogWidth.indexOf('px')));
  	clientH = parseInt(window.dialogHeight.substr(0,window.dialogHeight.indexOf('px')));
  }
  if ((oE.clientX>0)&&(oE.clientY>0)&&(oE.clientX<clientW)&&(oE.clientY<clientH)) {
	var oTmp = document.elementFromPoint(oE.clientX,oE.clientY);
	while ((oTmp.tagName!="DIV" && (oTmp.id!="content" || oTmp.id!="content1")) && (oTmp.id!="VicPopCal")) {
		if (oTmp.offsetParent==undefined)
			break;
		else
			oTmp = oTmp.offsetParent;
	}
	if (oTmp.id=="VicPopCal")
		return;
  }
  VicPopCal.style.visibility = 'hidden';
  with (document.all.tags("SELECT")){
    for (i=0; i<length; i++)
        if ((item(i).Victor!="Won")&&fTagInBound(item(i))){
            item(i).style.visibility = "visible";
        }
  }
}

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' onblur='fHideCal()' onclick='focus()' onkeydown='fClosePad()'>");
write("<table width='100%' border='0' bgcolor='#FFFFFF'>");
write("<TR>");
write("<td valign='middle' style='text-align:center'><a name='PrevMonth' class='premonth' href='javaScript:fPrevMonth()' onblur='fHideCal()'></a>&nbsp;");
write("<SELECT name='tbSelYear' onChange='fUpdateCal(tbSelYear.value, tbSelMonth.value)' Victor='Won' onclick='self.event.cancelBubble=true' onblur='fHideCal()'>");
for(i=1990;i<2015;i++)
	write("<OPTION value='"+i+"'>"+i+"</OPTION>");
write("</SELECT>");
write("&nbsp;&nbsp;<select name='tbSelMonth' onChange='fUpdateCal(tbSelYear.value, tbSelMonth.value)' Victor='Won' onclick='self.event.cancelBubble=true' onblur='fHideCal()'>");
for (i=0; i<12; i++)
	write("<option value='"+(i+1)+"'>"+gMonths[i]+"</option>");
write("</SELECT>");
write("<a name='NextMonth' class='nextmonth' href='javaScript:fNextMonth()' onblur='fHideCal()'></a>");
write("</td>");
write("</TR><TR>");
write("<td align='center'>");
write("<DIV style='background-color:white;'><table width='100%' border='0'>");
fDrawCal(giYear, giMonth, 18, 16);
write("</table></DIV>");
write("</td>");
write("</TR><TR><TD align='center'>");
write("<a href='javaScript:fSetDate(giYear,giMonth,giDay);'><b>今天 "+giYear+"-"+giMonth+"-"+giDay+"</b></a>");
write("</TD></TR>");write("</TD></TR>");
write("</TABLE></Div>");
}