/*基本参数*/
var Frw=195; //日历宽度
var Frh=150; //日历高度
var Hid=true;//日历是否打开
/*创建框架*/
document.writeln('<Div id=Calendar scrolling="no" frameborder=0 style="padding:3,3,0,3px;background-color:#FFFFFF;border:1px solid #EEEEEE;position:absolute; width:'+Frw+'px; height:'+Frh+'px; z-index:100;display:none"></Div>');
/*取得今日日期*/
function GetTodayDate()
{  var Sdate=document.getElementById("Today").value;
   Sdate=Sdate.replace(/-/,",");
   today= new Date(Sdate);
   y= today.getYear();
   m= (today.getMonth() + 1);
   if (m<10)
   {
     m='0'+m;
   }
   d= today.getDate();
   if (d<10)
   {
     d='0'+d;
   }
return y+'-'+m+'-'+d
}
/*输入今天日期*/
function SetTodayDate(InputBox)
{
  HiddenCalendar();
  InputBox.value=GetTodayDate();
}
/*取某年某月第一天的星期值(月份-1)*/
function GetFirstWeek(The_Year,The_Month)
{
  return (new Date(The_Year,The_Month-1,1)).getDay()
}
/*取某年某月中总天数*/
function GetThisDays(The_Year,The_Month)
{
  return (new Date(The_Year,The_Month,0)).getDate()
}
/*取某年某月上个月中总天数*/
function GetLastDays(The_Year,The_Month)
{
  return (new Date(The_Year,The_Month-1,0)).getDate()
}
/*判断是否是闰年*/
function RunNian(The_Year)
{
 if ((The_Year%400==0) || ((The_Year%4==0) && (The_Year%100!=0)))
  return true;
 else
  return false;
}
/* 判断日期(YYYY-MM-DD)的日期是否正确 */
function DateIsTrue(asDate){
 var lsDate  = asDate + "";
 var loDate  = lsDate.split("-");
 if (loDate.length!=3) return false; 
 var liYear  = parseFloat(loDate[0]);
 var liMonth = parseFloat(loDate[1]);
 var liDay   = parseFloat(loDate[2]);
 if ((loDate[0].length>4)||(loDate[1].length>2)||(loDate[2].length>2)) return false;
 if (isNaN(liYear)||isNaN(liMonth)||isNaN(liDay)) return false;
 if ((liYear<1800)||(liYear>2500)) return false;
 if ((liMonth>12)||(liMonth<=0))   return false;
 if (GetThisDays(liYear,liMonth)<liDay) return false;
 return !isNaN(Date.UTC(liYear,liMonth,liDay));
}
/*取某年某月的周值*/
function GetCountWeeks(The_Year,The_Month)
{
 var Allday;
 Allday = 0;
 if (The_Year>2000)
 {
  
  for (i=2000 ;i<The_Year; i++) 
   if (RunNian(i)) 
    Allday += 366;
   else
    Allday += 365;
  for (i=2; i<=The_Month; i++)
  {
   switch (i)
   {
      case 2 : 
       if (RunNian(The_Year))
        Allday += 29;
       else
        Allday += 28;
       break;
      case 3 : Allday += 31; break;
      case 4 : Allday += 30; break;
      case 5 : Allday += 31; break;
      case 6 : Allday += 30; break;
      case 7 : Allday += 31; break;
      case 8 : Allday += 31; break;
      case 9 : Allday += 30; break;
      case 10 : Allday += 31; break;
      case 11 : Allday += 30; break;
      case 12 :  Allday += 31; break;
   }
  }
 }
return (Allday+6)%7;
}
/*输入框显示*/
function InputValue(InputBox,Year,Month,Day)
{
  if (Month<10)
  {
    Month='0'+Month
  }
  if (Day<10)
  {
    Day='0'+Day
  }
  InputBox.value=Year+"-"+Month+"-"+Day
}
//上一月
function ForwardMonth(InputBox,Year,Month,Day)
{
    Month=Month-1;
    if (Month<1)
    {
        Month=12;
        Year=Year-1;
        if (Year<1800)
            Year=2500;
    }
  Day=((GetThisDays(Year,Month)<Day)?GetThisDays(Year,Month):Day)
  Hid=false;
  ShowCalendar(InputBox,Year,Month,Day)
}
//下一月
function NextMonth(InputBox,Year,Month,Day)
{
    Month=Month+1;
    if (Month>12)
    {
        Month=1;
        Year=Year+1;
        if (Year>2500)
            Year=1800;
    }
  Day=((GetThisDays(Year,Month)<Day)?GetThisDays(Year,Month):Day)
  Hid=false;
  ShowCalendar(InputBox,Year,Month,Day)
}
//上一年
function ForwardYear(InputBox,Year,Month,Day)
{
    Year=Year-1;
    if (Year<1800)
        Year=2500;
  Day=((GetThisDays(Year,Month)<Day)?GetThisDays(Year,Month):Day)
  Hid=false;
  ShowCalendar(InputBox,Year,Month,Day)
}
//下一年
function NextYear(InputBox,Year,Month,Day)
{
    Year=Year+1;
    if (Year>2500)
        Year=1800;
  Day=((GetThisDays(Year,Month)<Day)?GetThisDays(Year,Month):Day)
  Hid=false;
  ShowCalendar(InputBox,Year,Month,Day)
}
/*其它事件显示日历*/
function OpenDate(where,Pwhere)
{
/*显示的位置*/
var eT=19,eL=0,p=Pwhere;
var sT=document.body.scrollTop,sL=document.body.scrollLeft;
var eH=Pwhere.height,eW=Pwhere.width;
while(p&&p.tagName!="BODY"){eT+=p.offsetTop;eL+=p.offsetLeft;p=p.offsetParent;}
document.all.Calendar.style.display="";
document.all.Calendar.style.left=eL;
document.all.Calendar.style.top=eT;
//document.all.Calendar.style.left=(document.body.clientWidth-(eL-sL)>=Frw)?eL:eL+eW-Frw;;
//document.all.Calendar.style.top=(document.body.clientHeight-(eT-sT)-eH>=Frh)?eT+eH:eT-Frh;;
GetCalendar(where)
}
/*根据输入框中的日期显示日历*/
function GetCalendar(where,Sdate)
{
	var Startdate;
	if (document.getElementById("Sdate").value=="")
	Startdate=document.getElementById("Today").value;
	else
	Startdate=document.getElementById("Sdate").value;
	Startdate=Startdate.replace(/-/,",");
    Hid=false;
    var Box_Name=where.name;
    var Box_value=where.value;
    if (DateIsTrue(Box_value))
    {
    loDate  = Box_value.split("-");
    Y= parseFloat(loDate[0]);
    M= parseFloat(loDate[1]);
    D= parseFloat(loDate[2]);
    ShowCalendar(where,Y,M,D);
    }
  else
  {
    today= new Date(Startdate);
    y= today.getYear();
    m= (today.getMonth() + 1);
    d=today.getDate();
    ShowCalendar(where,y,m,d);
  }
}
/*隐藏日历*/
function HiddenCalendar()
{
    document.all.Calendar.style.display="none";
}
function CloseCalendar()
{
  if (Hid)
    document.all.Calendar.style.display="none";
  Hid=true;
}
/*显示日历*/
function ShowCalendar(InputBox,The_Year,The_Month,The_Day)
{
    var Now_Year=(The_Year==null?2004:The_Year);
    var Now_Month=(The_Month==null?1:The_Month);
    var Now_Day=(The_Day==null?1:The_Day);
    var Box_Name='window.parent.document.all.'+InputBox.name;
    var fw=GetFirstWeek(Now_Year,Now_Month);
    var ld=GetLastDays(Now_Year,Now_Month);
    var td=GetThisDays(Now_Year,Now_Month);
    var isnd=false;//是否是下个月的日期
    var d=1,w=1;
    var FrameContent;
//显示日历内容
FrameContent="\n<table onselectstart=\"return false;\" border='0' cellpadding='0' align='center' cellspacing='0' bgcolor='#FFFFFF' width='100%' height='15' style=\"margin-bottom:2px;border-bottom:1px solid #EEEEEE\">"+"\n<tr>\n";
FrameContent+="<td width=10% align='center'>";
FrameContent+="<img src='../images/Calendar/GoForward.gif' border='0' alt='上一年' style='cursor:hand' onclick=\"parent.ForwardYear (window.parent.document.all."+InputBox.name+","+Now_Year+","+Now_Month+","+Now_Day+")\">";
FrameContent+="</td>\n";
FrameContent+="<td width=10% align='center'>";
FrameContent+="<img src='../images/Calendar/GoForward.gif' border='0' alt='上一月' style='cursor:hand' onclick=\"parent.ForwardMonth (window.parent.document.all."+InputBox.name+","+Now_Year+","+Now_Month+","+Now_Day+")\">";
FrameContent+="</td>\n";
FrameContent+="<td vAlign=middle align='center' style='color:#000000;font-weight:bolder;'>";
FrameContent+=Now_Year;
FrameContent+="年 ";
FrameContent+=Now_Month;
FrameContent+="月";
FrameContent+="</td>\n";
FrameContent+="<td width=10% align='center'>";
FrameContent+="<img src='../images/Calendar/GoNext.gif' border='0' alt='下一月' style='cursor:hand' onclick=\"parent.NextMonth (window.parent.document.all."+InputBox.name+","+Now_Year+","+Now_Month+","+Now_Day+")\">";
FrameContent+="</td>"+"\n";
FrameContent+="<td width=10% align='center'>";
FrameContent+="<img src='../images/Calendar/GoNext.gif' border='0' alt='下一年' style='cursor:hand' onclick=\"parent.NextYear (window.parent.document.all."+InputBox.name+","+Now_Year+","+Now_Month+","+Now_Day+")\">";
FrameContent+="</td>\n";
FrameContent+="</tr>"+"\n";
FrameContent+="</table>"+"\n";
FrameContent+="<table onselectstart=\"return false;\" border='0' cellspacing='0' cellpadding='0' width='100%' align='center' style='border-bottom:2px solid #E5E5E5'>"+"\n";
FrameContent+="<tr bgcolor='#F5F5F5'>"+"\n";
FrameContent+="<td><center><img src='../images/Calendar/Mon.gif' border='0'></center></td>"+"\n";
FrameContent+="<td><center><img src='../images/Calendar/Tue.gif' border='0'></center></td>"+"\n";
FrameContent+="<td><center><img src='../images/Calendar/Wen.gif' border='0'></center></td>"+"\n";
FrameContent+="<td><center><img src='../images/Calendar/thu.gif' border='0'></center></td>"+"\n";
FrameContent+="<td><center><img src='../images/Calendar/Fri.gif' border='0'></center></td>"+"\n";
FrameContent+="<td><center><img src='../images/Calendar/Sat.gif' border='0'></center></td>"+"\n";
FrameContent+="<td><center><img src='../images/Calendar/Sun.gif' border='0'></center></td>"+"\n";
FrameContent+="</tr></table>"+"\n";
FrameContent+="<table onselectstart=\"return false;\" border='0' cellpadding='0' cellspacing='1' width='100%' bgcolor='#EEEEEE' align='center'>"+"\n";
//如果本月第一天是星期一或星期天.应加上七.保证可以看到上个月的日期
    if (fw<2)
      tf=fw+7;
    else
      tf=fw;
      FrameContent+="<tr bgcolor='#FFFFFF'>"+"\n";
      //第一行上月日期
      for (l=(ld-tf+2);l<=ld;l++)
      {
        FrameContent+="<td  onclick=\"parent.ForwardMonth (window.parent.document.all."+InputBox.name+","+Now_Year+","+Now_Month+","+l+")\" style='cursor:hand'><center><font color='#BBBBBB'>"+l+"</font></center></td>"+"\n";
        w++;
      }
      //第一行本月日期
      for (f=tf;f<=7;f++)
      {
         //星期天但非输入日期
         if (((w%7)==0)&&(d!=Now_Day))
           FrameContent+="<td onMouseOver=\"this.style.background=\'#EEEEEE\'\" onMouseOut=\"this.style.background=\'#FEF6F4\'\" onClick=\"parent.InputValue(window.parent.document.all."+InputBox.name+","+Now_Year+","+Now_Month+","+d+");parent.HiddenCalendar()\" style='background-color:#FEF6F4;cursor:hand'><center><font color='#E02200'>"+d+"</font></center></td>"+"\n";
         //日期为输入日期
	     else if((w+1)%7==0&&d!=Now_Day)
		   FrameContent+="<td onMouseOver=\"this.style.background=\'#FFFFFF\'\" onMouseOut=\"this.style.background=\'#F4FAFE\'\" onClick=\"parent.InputValue(window.parent.document.all."+InputBox.name+","+Now_Year+","+Now_Month+","+d+");parent.HiddenCalendar()\" style='background-color:#F4FAFE;cursor:hand'><center><font color='#046EAC'>"+d+"</font></center></td>"+"\n";
         else if (d==Now_Day)
           FrameContent+="<td style=\"background:#EFE6A6;cursor:hand\" onClick=\"parent.InputValue(window.parent.document.all."+InputBox.name+","+Now_Year+","+Now_Month+","+d+");parent.HiddenCalendar()\"><center><font color='#000000'>"+d+"</font></center></td>"+"\n";
         //其它
         else
           FrameContent+="<td onMouseOver=\"this.style.background=\'#EEEEEE\'\" onMouseOut=\"this.style.background=\'#FFFFFF\'\" onClick=\"parent.InputValue(window.parent.document.all."+InputBox.name+","+Now_Year+","+Now_Month+","+d+");parent.HiddenCalendar()\" style='color:#000000;cursor:hand'><center>"+d+"</center></td>"+"\n";
        d++;
        w++;
      }
      FrameContent+="</tr>"+"\n";
    w=1;
    for (i=2;i<7;i++)
    {
      FrameContent+="<tr bgcolor='#FFFFFF'>"+"\n";
      for (j=1;j<8;j++)
      {
         if (isnd)//下个月的日期
         FrameContent+="<td style='cursor:hand' onclick=\"parent.NextMonth (window.parent.document.all."+InputBox.name+","+Now_Year+","+Now_Month+","+d+")\"><center><font color='#BBBBBB'>"+d+"</font></center></td>"+"\n";
         else//本月的日期
        {
           //星期天但非输入日期
           if (((w%7)==0)&&(d!=Now_Day))
             FrameContent+="<td onMouseOver=\"this.style.background=\'#FFFFFF\'\" onMouseOut=\"this.style.background=\'#FEF6F4\'\" onClick=\"parent.InputValue(window.parent.document.all."+InputBox.name+","+Now_Year+","+Now_Month+","+d+");parent.HiddenCalendar()\" style='background-color:#FEF6F4;cursor:hand'><center><font color='#E02200'>"+d+"</font></center></td>"+"\n";
           //日期为输入日期
           else if((w+1)%7==0&&d!=Now_Day)
             FrameContent+="<td onMouseOver=\"this.style.background=\'#FFFFFF\'\" onMouseOut=\"this.style.background=\'#F4FAFE\'\" onClick=\"parent.InputValue(window.parent.document.all."+InputBox.name+","+Now_Year+","+Now_Month+","+d+");parent.HiddenCalendar()\" style='background-color:#F4FAFE;cursor:hand'><center><font color='#046EAC'>"+d+"</font></center></td>"+"\n";
		   else if (d==Now_Day)
             FrameContent+="<td style=\"background:#EFE6A6;cursor:hand\" onClick=\"parent.InputValue(window.parent.document.all."+InputBox.name+","+Now_Year+","+Now_Month+","+d+");parent.HiddenCalendar()\"><center><font color='#000000'>"+d+"</font></center></td>"+"\n";
           //其它
           else
             FrameContent+="<td onMouseOver=\"this.style.background=\'#EEEEEE\'\" onMouseOut=\"this.style.background=\'#FFFFFF\'\" onClick=\"parent.InputValue(window.parent.document.all."+InputBox.name+","+Now_Year+","+Now_Month+","+d+");parent.HiddenCalendar()\" style='color:#000000;cursor:hand'><center>"+d+"</center></td>"+"\n";
        }
        //判断是否为本月的日期
        if (d==td)
        {
          isnd=true;
          d=0;
        }
        w++;
        d++;
      }
      FrameContent+="</tr>"+"\n";
    }
FrameContent+="</table>"+"\n";
FrameContent+="<table onselectstart=\"return false;\" cellpadding='0' cellspacing='0' width='100%' bgcolor='#CCCCCC' height='15'>"+"\n<tr>\n";
FrameContent+="<td height='20' title=\"今日:"+GetTodayDate()+"\" style=\"cursor:hand\" onclick=\"parent.SetTodayDate(window.parent.document.all."+InputBox.name+")\">";
FrameContent+="<font color=#E02200>　今日:</font>"+GetTodayDate();
FrameContent+="</td>\n";
FrameContent+="<td align='right'>";
FrameContent+="<img src='../images/Calendar/close.gif' width='13' height='13' border='0' alt='关闭' style='cursor:hand' onclick=\"parent.HiddenCalendar()\">";
FrameContent+="</td>\n";
FrameContent+="</tr></table>\n";
document.all.Calendar.innerHTML=FrameContent;
document.all.Calendar.style.display="";
}
document.onclick = CloseCalendar;