var gdCtrl = new Object();
var goSelectTag = new Array();
var gcGray = "#808080";
var gcToggle = "#ffff00";
var gcBG = "#cccccc";
var gdCurDate = new Date();
var giYear = gdCurDate.getFullYear();
var giMonth = gdCurDate.getMonth()+1;
var giDay = gdCurDate.getDate();
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");
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;
	left = point.x + popCtrl.offsetWidth +1;
	top  = point.y +popCtrl.offsetHeight - VicPopCal.offsetHeight/2;
	width = VicPopCal.offsetWidth;
	height = VicPopCal.offsetHeight;
	fToggleTags(point);
	visibility = 'visible';
  }
  VicPopCal.focus();
}
function fSetDate(iYear, iMonth, iDay)
{
  var iMonthNew = new String(iMonth);
  var iDayNew = new String(iDay);
  
  if(iMonthNew.length < 2 ) iMonthNew = "0" + iMonthNew;
  if(iDayNew.length < 2 ) iDayNew = "0" + iDayNew;
  
  gdCtrl.value = iYear+"-"+iMonthNew+"-"+iDayNew;
  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+" 宋体;";
  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++) 
  	//for (w = 1; w < 6; 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 (w = 0; w < 5; 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";
				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;
}
with (document)
{
write("<Div id='VicPopCal' onclick='event.cancelBubble=true' style='POSITION:absolute;visibility:hidden;border:2px ridge;width:10;z-index:100;'>");
write("<table border='0' bgcolor='#6699cc'>");
write("<TR>");
write("<td valign='middle' align='center'><input type='button' name='PrevMonth' value='<' style='height:20;width:20;FONT:bold' onClick='fPrevMonth()'>");
write("&nbsp;<SELECT name='tbSelYear' onChange='fUpdateCal(tbSelYear.value, tbSelMonth.value)' Victor='Won'>");
for(i=1990;i<2015;i++)
	write("<OPTION value='"+i+"'>"+i+"年</OPTION>");
write("</SELECT>");
write("&nbsp;<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("&nbsp;<input type='button' name='PrevMonth' value='>' style='height:20;width:20;FONT:bold' onclick='fNextMonth()'>");
write("</td>");
write("</TR><TR>");
write("<td align='center'>");
write("<DIV style='background-color:teal'><table width='100%' border='0' cellpadding='2'>");
fDrawCal(giYear, giMonth, 12, 12);
write("</table></DIV>");
write("</td>");
write("</TR><TR><TD align='center'>");
write("<B style='cursor:hand;font:bold 10pt 宋体;' onclick='fSetDate(giYear,giMonth,giDay)'"+
" onMouseOver='this.style.color=gcToggle' onMouseOut='this.style.color=0'>今天："+
giYear+"年"+giMonth+"月"+giDay+"日</B>");
write("</TD></TR>");
write("</TABLE></Div>");
write("<SCRIPT event=onclick() for=document>fHideCalendar()</SCRIPT>");
}