javascript calendar

document.writeln('<div id=ggDateLayer style="position: absolute; width: 142; height: 166; z-index: 9998; display: none">');document.writeln('<span id=tmpSelectYearLayer  style="z-index: 9999;position: absolute;top: 2; left: 18;display: none"></span>');document.writeln('<span id=tmpSelectMonthLayer style="z-index: 9999;position: absolute;top: 2; left: 75;display: none"></span>');document.writeln('<table width="100%" border=0 cellspacing=1 cellpadding=0 width=142 height=160 bgcolor=#808080 onselectstart="return false">');document.writeln('  <tr><td width=142 height=23 bgcolor=#FFFFFF><table width="100%" border=0 cellspacing=1 cellpadding=0 width=140 height=23>');document.writeln('      <tr align=center><td width=15 align=center bgcolor=#808080 style="font-size:12px;cursor: hand;color: #FFD700" ');document.writeln('        οnclick="ggPrevM()" title="上月" whatever=good><b whatever=good><</b>');document.writeln('      </td><td width=15 align=center bgcolor=#808080 style="font-size:11px;cursor: hand;color: #FFD700" ');document.writeln('        οnclick="ggPrevY()" title="上年" whatever=good><b whatever=good><<</b>');document.writeln('        </td><td width=60 align=center style="font-size:11px;cursor:default" whatever=good>');document.writeln('        <span whatever=good id=ggYearHead ></span> 年 <span');document.writeln('         id=ggMonthHead whatever=good ></span> 月</td>');document.writeln('        <td width=15 bgcolor=#808080 align=center style="font-size:11px;cursor: hand;color: #FFD700" ');document.writeln('         οnclick="ggNextY()" title="下年" whatever=good><b whatever=good>>></b></td>');document.writeln('        <td width=15 bgcolor=#808080 align=center style="font-size:11px;cursor: hand;color: #FFD700" ');document.writeln('         οnclick="ggNextM()" title="下月" whatever=good><b whatever=good>></b></td></tr>');document.writeln('    </table></td></tr>');document.writeln('  <tr><td width=142 height=120>');document.writeln('    <table width="100%" border=0 cellspacing=1 cellpadding=0 width=140 height=120 bgcolor=#FFFFFF>');var n=0; for (j=0;j<5;j++){ document.writeln (' <tr align=center>'); for (i=0;i<7;i++){document.writeln('<td width=20 height=20 id=ggDay'+n+' style="font-size:12px" whatever=good οnclick=ggDayClick(this.innerText)></td>');n++;}document.writeln('</tr>');}document.writeln('      <tr align=center><td width=20 height=20 style="font-size:12px" id=ggDay35 whatever=good ');document.writeln('         οnclick=ggDayClick(this.innerText)></td>');document.writeln('        <td width=20 height=20 style="font-size:12px" id=ggDay36 whatever=good οnclick=ggDayClick(this.innerText)></td></tr>');document.writeln('    </table></td></tr><tr><td>');document.writeln('        <table width="100%" border=0 cellspacing=1 cellpadding=0 width=100% bgcolor=#FFFFFF>');document.writeln('</tr></table></td></tr></table></div>');

//==================================================== WEB 页面显示部分 ======================================================var outObject;function setday(tt,obj) //主调函数{  var dads  = document.all.ggDateLayer.style;var th = tt;  var ttop  = tt.offsetTop;     //TT控件的定位点高  var thei  = tt.clientHeight;  //TT控件本身的高  var tleft = tt.offsetLeft;    //TT控件的定位点宽  var ttyp  = tt.type;          //TT控件的类型  while (tt = tt.offsetParent){ttop+=tt.offsetTop; tleft+=tt.offsetLeft;}  dads.top  = (ttyp=="image")? ttop+thei : ttop+thei+6;  dads.left = tleft;  outObject = (arguments.length == 1) ? th : obj;  dads.display = '';  event.returnValue=false;}

var MonHead = new Array(12);               //定义阳历中每个月的最大天数    MonHead[0] = 31; MonHead[1] = 28; MonHead[2] = 31; MonHead[3] = 30; MonHead[4]  = 31; MonHead[5]  = 30;    MonHead[6] = 31; MonHead[7] = 31; MonHead[8] = 30; MonHead[9] = 31; MonHead[10] = 30; MonHead[11] = 31;

var ggTheYear=new Date().getFullYear(); //定义年的变量的初始值var ggTheMonth=new Date().getMonth()+1; //定义月的变量的初始值var ggWDay=new Array(37);               //定义写日期的数组

function document.onclick() //任意点击时关闭该控件{  with(window.event.srcElement)  { if (tagName != "INPUT" && getAttribute("whatever")==null)    document.all.ggDateLayer.style.display="none";  }}

function ggWriteHead(yy,mm)  //往 head 中写入当前的年与月  { document.all.ggYearHead.innerText  = yy;    document.all.ggMonthHead.innerText = mm;  }

function tmpSelectYearInnerHTML(strYear) //年份的下拉框{  if (strYear.match(//D/)!=null){alert("年份输入参数不是数字！");return;}  var m = (strYear) ? strYear : new Date().getFullYear();  if (m < 1000 || m > 9999) {alert("年份值不在 1000 到 9999 之间！");return;}  var n = m - 10;  if (n < 1000) n = 1000;  if (n + 26 > 9999) n = 9974;  var s = "<select whatever=good name=tmpSelectYear style='font-size: 12px' "     s += "οnblur='document.all.tmpSelectYearLayer.style.display=/"none/"' "     s += "οnchange='document.all.tmpSelectYearLayer.style.display=/"none/";"     s += "ggTheYear = this.value; ggSetDay(ggTheYear,ggTheMonth)'>/r/n";  var selectInnerHTML = s;  for (var i = n; i < n + 26; i++)  {    if (i == m)       {selectInnerHTML += "<option value='" + i + "' selected>" + i + "年" + "</option>/r/n";}    else {selectInnerHTML += "<option value='" + i + "'>" + i + "年" + "</option>/r/n";}  }  selectInnerHTML += "</select>";  document.all.tmpSelectYearLayer.style.display="";  document.all.tmpSelectYearLayer.innerHTML = selectInnerHTML;  document.all.tmpSelectYear.focus();}

function tmpSelectMonthInnerHTML(strMonth) //月份的下拉框{  if (strMonth.match(//D/)!=null){alert("月份输入参数不是数字！");return;}  var m = (strMonth) ? strMonth : new Date().getMonth() + 1;  var s = "<select whatever=good name=tmpSelectMonth style='font-size: 12px' "     s += "οnblur='document.all.tmpSelectMonthLayer.style.display=/"none/"' "     s += "οnchange='document.all.tmpSelectMonthLayer.style.display=/"none/";"     s += "ggTheMonth = this.value; ggSetDay(ggTheYear,ggTheMonth)'>/r/n";  var selectInnerHTML = s;  for (var i = 1; i < 13; i++)  {    if (i == m)       {selectInnerHTML += "<option value='"+i+"' selected>"+i+"月"+"</option>/r/n";}    else {selectInnerHTML += "<option value='"+i+"'>"+i+"月"+"</option>/r/n";}  }  selectInnerHTML += "</select>";  document.all.tmpSelectMonthLayer.style.display="";  document.all.tmpSelectMonthLayer.innerHTML = selectInnerHTML;  document.all.tmpSelectMonth.focus();}

function closeLayer()               //这个层的关闭  {    document.all.ggDateLayer.style.display="none";  }

function document.onkeydown()  {    if (window.event.keyCode==27)document.all.ggDateLayer.style.display="none";  }

function isLeapYear(year){   if(((year%4)==0)&&((year0)!=0)||((year@0)==0)){     return(true);   }else{   return(false);   } }

function GetMonthCount(year,month)  //闰年二月为29天  {    var c=MonHead[month-1];if((month==2)&&isLeapYear(year)) c++;return c;  }

function GetDOW(day,month,year)     //求某天的星期几  {    var dt=new Date(year,month-1,day).getDay()/7; return dt;  }

function ggPrevY()  //上年  {    if(ggTheYear > 999 && ggTheYear <10000){ggTheYear--;}    else{alert("年份超出范围（1000-9999）！");}    ggSetDay(ggTheYear,ggTheMonth);  }function ggNextY()  //下年  {    if(ggTheYear > 999 && ggTheYear <10000){ggTheYear++;}    else{alert("年份超出范围（1000-9999）！");}    ggSetDay(ggTheYear,ggTheMonth);  }function ggToday()  //Today Button  {    ggTheYear = new Date().getFullYear();    ggTheMonth = new Date().getMonth()+1;    ggSetDay(ggTheYear,ggTheMonth);  }function ggPrevM()  //上月  {    if(ggTheMonth>1){ggTheMonth--}else{ggTheYear--;ggTheMonth=12;}    ggSetDay(ggTheYear,ggTheMonth);  }function ggNextM()  //下月  {    if(ggTheMonth==12){ggTheYear++;ggTheMonth=1}else{ggTheMonth++}    ggSetDay(ggTheYear,ggTheMonth);  }

function ggSetDay(yy,mm)   //主要的写程序**********{  ggWriteHead(yy,mm);  for (var i = 0; i < 37; i++){ggWDay[i]=""};  //将显示框的内容全部清空  var day1 = 1,firstday = new Date(yy,mm-1,1).getDay();  //某月第一天的星期几  for (var i = firstday; day1 < GetMonthCount(yy,mm)+1; i++){ggWDay[i]=day1;day1++;}  for (var i = 0; i < 37; i++)  { var da = eval("document.all.ggDay"+i)     //书写新的一个月的日期星期排列    if (ggWDay[i]!="")      { da.innerHTML = "<b>" + ggWDay[i] + "</b>";        da.style.backgroundColor = (yy == new Date().getFullYear() &&        mm == new Date().getMonth()+1 && ggWDay[i] == new Date().getDate()) ? "#C9F1FA" : "#FF9900";        da.style.cursor="hand"      }    else{da.innerHTML="";da.style.backgroundColor="";da.style.cursor="default"}  }}function ggDayClick(n)  //点击显示框选取日期，主输入函数*************{  var yy = ggTheYear;  var mm = ggTheMonth;  if (mm < 10){mm = "0" + mm;}  if (outObject)  {    if (!n) {outObject.value=""; return;}    if ( n < 10){n = "0" + n;}    outObject.value= yy + "-" + mm + "-" + n ; //注：在这里你可以输出改成你想要的格式    closeLayer();  }  else {closeLayer(); alert("您所要输出的控件对象并不存在！");}}ggSetDay(ggTheYear,ggTheMonth);注:οnfοcus="setday(this)"