/*=======Calendar.js==============*/

var months = 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"); 
var daysInMonth = new Array(31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31); 
var days = new Array("日","一","二","三","四","五","六"); 
var today; 

document.writeln("<div id='Calendar' style='position:absolute; z-index:1; visibility: hidden; filter:\"progid:DXImageTransform.Microsoft.Shadow(direction=135,color=#999999,strength=3)\"'></div>");

function getDays(month, year)
{ 
 
  if (1 == month) 
    return ((0 == year % 4) && (0 != (year % 100))) || (0 == year % 400) ? 29 : 28; 
  else 
    return daysInMonth[month]; 
} 

function getToday() 
{ 
 
  this.now = new Date(); 
  this.year = this.now.getFullYear(); 
  this.month = this.now.getMonth(); 
  this.day = this.now.getDate(); 
}

function getStringDay(str) 
{ 
   
  var str=str.split("-")
  
  this.now = new Date(parseFloat(str[0]),parseFloat(str[1])-1,parseFloat(str[2])); 
  this.year = this.now.getFullYear(); 
  this.month = this.now.getMonth(); 
  this.day = this.now.getDate(); 
}

function newCalendar() { 
  var parseYear = parseInt(document.all.Year.options[document.all.Year.selectedIndex].value); 
  var newCal = new Date(parseYear, document.all.Month.selectedIndex, 1); 
  var day = -1; 
  var startDay = newCal.getDay(); 
  var daily = 0; 
  
  if ((today.year == newCal.getFullYear()) &&(today.month == newCal.getMonth())) 
    day = today.day; 
    
  var tableCal = document.all.calendar; 
  var intDaysInMonth =getDays(newCal.getMonth(), newCal.getFullYear());
  
  
  for (var intWeek = 1; intWeek < tableCal.rows.length;intWeek++) 
    for (var intDay = 0;intDay < tableCal.rows[intWeek].cells.length;intDay++) 
    { 
      var cell = tableCal.rows[intWeek].cells[intDay];
      if ((intDay == startDay) && (0 == daily)) 
        daily = 1;
         
   
          if(day==daily)  
          {
            cell.style.background='#6699CC';
            cell.style.color='#FFFFFF';
            cell.style.fontWeight='bold';
          }
     
      if ((daily > 0) && (daily <= intDaysInMonth)) 
      { 
        cell.innerText = daily; 
        daily++; 
      } 
      else 
        cell.innerText = ""; 
      } 
} 

function GetDate(InputBox)
{ 
  var sDate; 
   
  if (event.srcElement.tagName == "TD") 
    if (event.srcElement.innerText != "") 
    { 
      sDate = document.all.Year.value + "-" + document.all.Month.value + "-" + event.srcElement.innerText;
      eval("document.all."+InputBox).value=sDate;
      HiddenCalendar();
    } 
} 

function HiddenCalendar()
{
   
  document.all.Calendar.style.visibility='hidden';
}

function ShowCalendar(InputBox)
{
  var x,y,intLoop,intWeeks,intDays;
  var DivContent;
  var year,month,day;
  //var o=document.getElementById(InputBox);
  var o=InputBox;
  var oid=o.id;
  var thisyear;  
  
  if(!oid)oid=o.name;
  
  thisyear=new getToday();
  thisyear=thisyear.year;
  
  today = o.value;
  if(isDate(today))
    today = new getStringDay(today);
  else
    today = new getToday(); 
  
   
  x=o.offsetLeft;
  y=o.offsetTop;
  while(o=o.offsetParent)
  {
    x+=o.offsetLeft;
    y+=o.offsetTop;
  }
  document.all.Calendar.style.left=x+2;
  document.all.Calendar.style.top=y+20;
  document.all.Calendar.style.visibility="visible";
  
   
  DivContent="<table border='0' cellspacing='0' style='border:1px solid #0066FF; background-color:#EDF2FC'>";
  DivContent+="<tr>";
  DivContent+="<td style='border-bottom:1px solid #0066FF; background-color:#C7D8FA'>";
  
   
  DivContent+="<select name='Year' id='Year' onChange='newCalendar()' style='font-family:Verdana; font-size:12px'>";
  for (intLoop = thisyear - 100; intLoop < (thisyear + 2); intLoop++) 
    DivContent+="<option value= " + intLoop + " " + (today.year == intLoop ? "Selected" : "") + ">" + intLoop + "</option>"; 
  DivContent+="</select>";
  
 
  DivContent+="<select name='Month' id='Month' onChange='newCalendar()' style='font-family:Verdana; font-size:12px'>";
  for (intLoop = 0; intLoop < months.length; intLoop++) 
    DivContent+="<option value= " + (intLoop + 1) + " " + (today.month == intLoop ? "Selected" : "") + ">" + months[intLoop] + "</option>"; 
  DivContent+="</select>";
  
  DivContent+="</td>";
  
  DivContent+="<td style='border-bottom:1px solid #0066FF; background-color:#C7D8FA; font-weight:bold; font-family:Wingdings 2,Wingdings,Webdings; font-size:16px; padding-top:2px; color:#4477FF; cursor:hand' align='center' title='1?±?' onClick='javascript:HiddenCalendar()'>S</td>";
  DivContent+="</tr>";
   
  DivContent+="<tr><td align='center' colspan='2'>";
  DivContent+="<table id='calendar' border='0' width='100%'>";
  
 
  DivContent+="<tr>";
  for (intLoop = 0; intLoop < days.length; intLoop++) 
    DivContent+="<td align='center' style='font-size:12px'>" + days[intLoop] + "</td>"; 
  DivContent+="</tr>";
  
 
  for (intWeeks = 0; intWeeks < 6; intWeeks++)
  { 
    DivContent+="<tr>"; 
    for (intDays = 0; intDays < days.length; intDays++) 
      DivContent+="<td onClick='GetDate(\"" + oid + "\")' style='cursor:hand; border-right:1px solid #BBBBBB; border-bottom:1px solid #BBBBBB; color:#215DC6; font-family:Verdana; font-size:12px' align='center'></td>";
    DivContent+="</tr>"; 
  } 
  DivContent+="</table></td></tr></table>";

  document.all.Calendar.innerHTML=DivContent;
  newCalendar();
}

function isDate(dateStr)
{ 
  var datePat = /^(\d{4})(\-)(\d{1,2})(\-)(\d{1,2})$/;
  var matchArray = dateStr.match(datePat);
  if (matchArray == null) return false; 
  var month = matchArray[3];
  var day = matchArray[5]; 
  var year = matchArray[1]; 
  if (month < 1 || month > 12) return false; 
  if (day < 1 || day > 31) return false; 
  if ((month==4 || month==6 || month==9 || month==11) && day==31) return false; 
  if (month == 2)
  {
    var isleap = (year % 4 == 0 && (year % 100 != 0 || year % 400 == 0)); 
    if (day > 29 || (day==29 && !isleap)) return false; 
  } 
  return true;
}