//论坛左侧导航
function bbs_Menu(sid,totalid){

 for(var i=1;i<=totalid;i++){
 	document.getElementById("b_cat_"+i).className="B_Menu_off";
 	document.getElementById("s_cat_"+i).style.display="none";
 }
	document.getElementById("b_cat_"+sid).className="B_Menu_on";
 	document.getElementById("s_cat_"+sid).style.display="";
}

//时间格式
function change_times(num){
  if(num<10) return "0"+num;
  else return num;
}

//定时器时间显示
setInterval("document.getElementById('times').innerHTML='当前时间'+change_times(new Date().getHours())+':'+change_times(new Date().getMinutes())+':'+change_times(new Date().getSeconds());",1000);

//当前日期
function createtime(){
var today=new Date();
var yy=today.getYear();
var mm=today.getMonth()+1;
var dd=today.getDate();
var DDDD= CnDateofDateStr(today); //显示农历
document.getElementById("timeDate").innerHTML = yy+"年"+mm+"月"+dd+"日&nbsp;&nbsp;"+DDDD;
}
function DaysNumberofDate(DateGL){
return parseInt((Date.parse(DateGL)-Date.parse(DateGL.getFullYear()+"/1/1"))/86400000)+1;
}
function CnDateofDate(DateGL){
var CnData=new Array(
0x16,0x2a,0xda,0x00,0x83,0x49,0xb6,0x05,0x0e,0x64,0xbb,0x00,0x19,0xb2,0x5b,0x00,
0x87,0x6a,0x57,0x04,0x12,0x75,0x2b,0x00,0x1d,0xb6,0x95,0x00,0x8a,0xad,0x55,0x02,
0x15,0x55,0xaa,0x00,0x82,0x55,0x6c,0x07,0x0d,0xc9,0x76,0x00,0x17,0x64,0xb7,0x00,
0x86,0xe4,0xae,0x05,0x11,0xea,0x56,0x00,0x1b,0x6d,0x2a,0x00,0x88,0x5a,0xaa,0x04,
0x14,0xad,0x55,0x00,0x81,0xaa,0xd5,0x09,0x0b,0x52,0xea,0x00,0x16,0xa9,0x6d,0x00,
0x84,0xa9,0x5d,0x06,0x0f,0xd4,0xae,0x00,0x1a,0xea,0x4d,0x00,0x87,0xba,0x55,0x04
);
var CnMonth=new Array();
var CnMonthDays=new Array();
var CnBeginDay;
var LeapMonth;
var Bytes=new Array();
var I;
var CnMonthData;
var DaysCount;
var CnDaysCount;
var ResultMonth;
var ResultDay;
var yyyy=DateGL.getFullYear();
var mm=DateGL.getMonth()+1;
var dd=DateGL.getDate();
if(yyyy<100) yyyy+=1900;
  if ((yyyy < 1997) || (yyyy > 2020)){
    return 0;
    }
  Bytes[0] = CnData[(yyyy - 1997) * 4];
  Bytes[1] = CnData[(yyyy - 1997) * 4 + 1];
  Bytes[2] = CnData[(yyyy - 1997) * 4 + 2];
  Bytes[3] = CnData[(yyyy - 1997) * 4 + 3];
  if ((Bytes[0] & 0x80) != 0) {CnMonth[0] = 12;}
  else {CnMonth[0] = 11;}
  CnBeginDay = (Bytes[0] & 0x7f);
  CnMonthData = Bytes[1];
  CnMonthData = CnMonthData << 8;
  CnMonthData = CnMonthData | Bytes[2];
  LeapMonth = Bytes[3];
for (I=15;I>=0;I--){
    CnMonthDays[15 - I] = 29;
    if (((1 << I) & CnMonthData) != 0 ){
      CnMonthDays[15 - I]++;}
    if (CnMonth[15 - I] == LeapMonth ){
      CnMonth[15 - I + 1] = - LeapMonth;}
    else{
      if (CnMonth[15 - I] < 0 ){CnMonth[15 - I + 1] = - CnMonth[15 - I] + 1;}
      else {CnMonth[15 - I + 1] = CnMonth[15 - I] + 1;}
      if (CnMonth[15 - I + 1] > 12 ){ CnMonth[15 - I + 1] = 1;}
    }
  }
  DaysCount = DaysNumberofDate(DateGL) - 1;
  if (DaysCount <= (CnMonthDays[0] - CnBeginDay)){
    if ((yyyy > 1901)  &&  (CnDateofDate(new Date((yyyy - 1)+"/12/31")) < 0)){
      ResultMonth = - CnMonth[0];}
    else {ResultMonth = CnMonth[0];}
    ResultDay = CnBeginDay + DaysCount;
  }
  else{
    CnDaysCount = CnMonthDays[0] - CnBeginDay;
    I = 1;
    while ((CnDaysCount < DaysCount)  &&  (CnDaysCount + CnMonthDays[I] < DaysCount)){
      CnDaysCount+= CnMonthDays[I];
      I++;
    }
    ResultMonth = CnMonth[I];
    ResultDay = DaysCount - CnDaysCount;
  }
  if (ResultMonth > 0){
    return ResultMonth * 100 + ResultDay;}
  else{return ResultMonth * 100 - ResultDay;}
}
function CnYearofDate(DateGL){
var YYYY=DateGL.getFullYear();
var MM=DateGL.getMonth()+1;
var CnMM=parseInt(Math.abs(CnDateofDate(DateGL))/100);
if(YYYY<100) YYYY+=1900;
if(CnMM>MM) YYYY--;
YYYY-=1864;
return CnEra(YYYY)+"年";
}
function CnMonthofDate(DateGL){
var  CnMonthStr=new Array("零","正","二","三","四","五","六","七","八","九","十","冬","腊");
var  Month;
  Month = parseInt(CnDateofDate(DateGL)/100);
  if (Month < 0){return "闰" + CnMonthStr[-Month] + "月";}
  else{return CnMonthStr[Month] + "月";}
}
function CnDayofDate(DateGL){
var CnDayStr=new Array("零",
    "初一", "初二", "初三", "初四", "初五",
    "初六", "初七", "初八", "初九", "初十",
    "十一", "十二", "十三", "十四", "十五",
    "十六", "十七", "十八", "十九", "二十",
    "廿一", "廿二", "廿三", "廿四", "廿五",
    "廿六", "廿七", "廿八", "廿九", "三十");
var Day;
  Day = (Math.abs(CnDateofDate(DateGL)))%100;
  return CnDayStr[Day];
}

function CnDateofDateStr(DateGL){
  if(CnMonthofDate(DateGL)=="零月") return "　请调整您的计算机日期!";
  else return CnMonthofDate(DateGL) + CnDayofDate(DateGL);
}

//上海世博会
function createexpo()   
{    
 var deadline= new Date("05/01/2010") //开幕倒计时   
 var now = new Date()   
 var diff = -480 - now.getTimezoneOffset() //是北京时间和当地时间的时间差   
 var leave = (now.getTime() - deadline.getTime()) + diff*60000  
 var day = Math.floor(leave / (1000 * 60 * 60 * 24))   
 var hour = Math.floor(leave / (1000*3600)) - (day * 24)   
 var minute = Math.floor(leave / (1000*60)) - (day * 24 *60) - (hour * 60)   
 var second = Math.floor(leave / (1000)) - (day * 24 *60*60) - (hour * 60 * 60) - (minute*60)   
 document.getElementById("expoDate").innerHTML = Number(day)+1;
 setInterval("createexpo()",3600000);
}