ＪＳ经典日期控件

<script>
  var myC_x,myC_y;
  var myC_timeset=null,myC_timeset1=null;
  var divObj=null;
  var inputName;
  function myCalendar() //构建对象
    ...{
      var myDate = new Date();     
      this.year = myDate.getFullYear();
      this.month = myDate.getMonth()+1;
      this.date = myDate.getDate();
        
      this.format="yyyy-mm-dd";   
      this.style = myStyle(1);　
      this.show = createCalendar;
      this.input = createInput;
    }
    
  function myStyle(num) //设置样式
    ...{
      if(!num||isNaN(num))...{alert('参数不对,采用默认样式！');num=1;}
    　var style = new Array();
        
      style[1]=".week{background-color:#DfDfff;font-size:12px;width:140px;}"
            +".ds{width:140px;font-size:12px;cursor:hand}"
            +".mover{border:1px solid black;background-color:#f4f4f4;}"
            +".move1{border:1px solid #5d5d5d;background-color:#f4f4f4;color:#909eff;font-size:12px}"
                                        +".tit{background-color:#909EFF;width:140px;font-size:12px;color:white;cursor:default}"
            +".cs{position:absolute;border:1px solid #909eff;width:142px;left:0px;top:0px;z-index:9999;}"
            +".shadow{position:absolute;left:0px;top:0px;font-family: Arial Black;font-size:50px;color:#d4d4d4;z-index:1;text-align:center;}";
              
      document.write("<style type='text/css'>");       
      document.write(style[num]);       
      document.write("</style>");
    }
    
  function createCalendar()
    ...{
    var week = new Array('日','一','二','三','四','五','六');
    
    document.write("<div class='cs' onselectstart='return false' oncontextmenu='return false' onmousedown='if(event.button==2)this.style.display="none"' id='myC_div'><div class='shadow'></div><div style='position:absolute;left:0px;top:0px;z-index:1'>");
    //创建头部
    document.write("<table class='tit' id='myC_Top' onmousedown='myC_x=event.x-parentNode.parentNode.style.pixelLeft;myC_y=event.y-parentNode.parentNode.style.pixelTop;setCapture()' onmouseup='releaseCapture();' onmousemove='myCMove(this.parentElement.parentElement);'><tr><td width=10 onmouseover='this.style.color="black"' onmouseout='this.style.color=""' onclick='cutYear()' style='font-family: Webdings;cursor:hand;' title='减少年份'>7</td><td title='减少月份' onmouseover='this.style.color="black"' onclick='cutMonth()' onmouseout='this.style.color=""' width=10 style='font-family: Webdings;cursor:hand;'>3</td><td align=center onmouseover=this.className='move1'; onmouseout=this.className='';divHidden(myC.parentElement.nextSibling); onclick='createyear("+this.year+",this);divShow(myC.parentElement.nextSibling);'></td><td align=center onclick='createmonth("+this.month+",this);divShow(myC.parentElement.nextSibling)' onmouseover=this.className='move1'; onmouseout=this.className='';divHidden(myC.parentElement.nextSibling);></td><td width=10 onmouseover='this.style.color="black"' onmouseout='this.style.color=""' onclick='addMonth()' style='font-family: Webdings;cursor:hand;' title='增加月份'>4</td><td width=10 style='font-family: Webdings;cursor:hand;' onmouseover='this.style.color="black"' onmouseout='this.style.color=""' onclick='addYear()' title='增加年份'>8</td></tr></table>");
    
    //创建星期条目
      document.write("<table class='week'><tr>");
      for(i=0;i<7;i++)
        document.write("<td align=center>"+week[i]+"</td>");         
      document.write("</tr></table>");
    //创建日期条目
      document.write("<table class='ds' id='myC' cellspacing=2 cellpadding=0>");
      for(i=0;i<6;i++)
        ...{
        document.write("<tr>");
        for(j=0;j<7;j++)
          document.write("<td width=10% height=16 align=center onmouseover='mOver(this)' onmouseout='mOut(this)' onclick='if(this.innerText!="")getValue(inputName,this.innerText);myC_div.style.display="none"'></td>");
        document.write("</tr>");
        }
      document.write("</table>");
      
      //建建水印
      document.write("</div>");
      //创建选择图层
      document.write("<div style='position:absolute;left:0px;top:0px;z-index:3' onmouseover=divShow(this) onmouseout=divHidden(this)></div>");       
    document.write("</div>");
    
    
      //显示日期
      showDate(this.year,this.month);   
      myC_div.style.display='none';   
    }
    
  function getValue(obj,value)
      ...{
      eval(obj).value=parseInt(myC_Top.cells[2].innerText)+"-"+parseInt(myC_Top.cells[3].innerText)+"-"+value;
      }   
  function showDate(year,month)
    ...{ 
      var myDate = new Date(year,month-1,1);
      var today = new Date();
      var day = myDate.getDay();
      var length = new Array(31,30,31,30,31,30,31,31,30,31,30,31);
        length[1] = ((year%4==0)&&(year%100!=0)||(year%400==0))?29:28;
      
      for(i=0;i<myC.cells.length;i++)myC.cells[i].innerHTML = "";
      
      for(i=0;i<length[month-1];i++)
        ...{
        myC.cells[i+day].innerHTML = (i+1); 
          if(new Date(year,month-1,i+1).getDay()==6||new Date(year,month-1,i+1).getDay()==0)...{myC.cells[i+day].style.color='red';}
          }
          
        myC_Top.cells[2].innerText=year+"年";
        myC_Top.cells[3].innerText=month+"月";
        
        with(myC.parentNode.previousSibling.style)
        ...{
          pixelLeft=myC.offsetLeft;
          pixelTop=myC.offsetTop;
          height = myC.clientHeight;
          width = myC.clientWidth;
        }
      myC.parentElement.parentElement.style.height=myC.parentElement.offsetHeight;
      myC.parentElement.previousSibling.innerHTML=year;
    }
    
  //一些附加函数--------------------
  //---------Begin-------------------
  function mOver(obj)...{obj.className = 'mover';}
  function mOut(obj)...{if(obj.className=='mover')obj.className = '';}     
  function addYear()...{var year = parseInt(myC_Top.cells[2].innerText);var month = parseInt(myC_Top.cells[3].innerText); year++;showDate(year,month);}
  function addMonth()...{var year = parseInt(myC_Top.cells[2].innerText);var month = parseInt(myC_Top.cells[3].innerText);month++;if(month>12)...{month=1;year++;}showDate(year,month);}
  function cutYear()...{var year = parseInt(myC_Top.cells[2].innerText);var month = parseInt(myC_Top.cells[3].innerText);year--;showDate(year,month);}
  function cutMonth()...{var year = parseInt(myC_Top.cells[2].innerText);var month = parseInt(myC_Top.cells[3].innerText);month--;if(month<1)...{month=12;year--;}showDate(year,month);}
  function divS(obj)
    ...{
    if(obj!=divObj)
      ...{
      obj.style.backgroundColor="#909eff";
      obj.style.color='black';
      }   
      if(divObj!=null)
      ...{ 
      divObj.style.backgroundColor='';
      divObj.style.color='';
      }   
      divObj = obj;     
    }
    
  function divShow(obj)
  ...{ if (myC_timeset!=null) clearTimeout(myC_timeset);
      obj.style.display='block';
  }
  function divHidden(obj)...{myC_timeset=window.setTimeout(function()...{obj.style.display='none'},500);}
  function createyear(year,obj)//创建年份选择
    ...{
    var ystr;
    var oDiv;
      ystr="<table class='move1' cellspacing=0 cellpadding=2 width="+obj.offsetWidth+">";
      ystr+="<tr><td style='cursor:hand' onclick='createyear("+(year-20)+",myC_Top.cells[2])' align=center>上翻</td></tr>";
      for(i=year-10;i<year+10;i++)
        if(year==i)
        ystr+="<tr style='background-color:#909eff'><td style='color:black;height:16px;cursor:hand' align=center onclick='myC_Top.cells[2].innerText=this.innerText;showDate("+i+",parseInt(myC_Top.cells[3].innerText));myC.parentElement.nextSibling.innerHTML=""'>"+i+"年</td></tr>";
        else
        ystr+="<tr><td align=center style='cursor:hand' onmouseover=divS(this) onclick='myC_Top.cells[2].innerText=this.innerText;showDate("+i+",parseInt(myC_Top.cells[3].innerText));myC.parentElement.nextSibling.innerHTML=""'>"+i+"年</td></tr>";
      ystr+="<tr><td style='cursor:hand' onclick='createyear("+(year+20)+",myC_Top.cells[2])' align=center>下翻</td></tr>";
      ystr+="</table>";
      
      oDiv = myC.parentElement.nextSibling;
          oDiv.innerHTML='';
          oDiv.innerHTML = ystr;
      
      showDiv(oDiv,obj.offsetTop+obj.offsetHeight,obj.offsetLeft);
    }
  function createmonth(month,obj)//创建月份选择
    ...{
    var mstr;
    var oDiv;
      mstr="<table class='move1' cellspacing=0 cellpadding=2 width="+obj.offsetWidth+">";
      for(i=1;i<13;i++)
        if (month==i)
        mstr+="<tr style='background-color:#909eff'><td style='color:black;height:16px;cursor:hand' align=center onclick='myC_Top.cells[3].innerText=this.innerText;showDate(parseInt(myC_Top.cells[2].innerText),"+i+");myC.parentElement.nextSibling.innerHTML=""'>"+i+"月</td></tr>";
        else
        mstr+="<tr><td align=center style='cursor:hand' onmouseover='divS(this)' onclick='myC_Top.cells[3].innerText=this.innerText;showDate(parseInt(myC_Top.cells[2].innerText),"+i+");myC.parentElement.nextSibling.innerHTML=""'>"+i+"月</td></tr>";
      mstr+="</table>";
      oDiv = myC.parentElement.nextSibling;
            oDiv.innerHTML='';
            oDiv.innerHTML = mstr;
      showDiv(oDiv,obj.offsetTop+obj.offsetHeight,obj.offsetLeft); 
      }
      
  function showDiv(obj,top,left)
      ...{
        obj.style.pixelTop=top;
        obj.style.pixelLeft=left;
    }
  function myCMove(obj)
  ...{
  if(event.button==1)
    ...{
    var X = obj.clientLeft;
    var Y = obj.clientTop;
    obj.style.pixelLeft= X+(event.x-myC_x);
    obj.style.pixelTop= Y+(event.y-myC_y);
    window.status=myC_y;
    }
  }
  function showDiv2(obj)
    ...{ 
    inputName=obj.name;
    var e=obj;
    var ot = obj.offsetTop;
    var ol=obj.offsetLeft;
    while(obj=obj.parentElement)...{ot+=obj.offsetTop;ol+=obj.offsetLeft;}
    myC_div.style.pixelTop=ot+e.offsetHeight;
    myC_div.style.pixelLeft=ol;
    myC_div.style.display="block";
    }   
  function createInput(name)
    ...{myC_div.style.display='none';
    document.write("<input type='text' name='"+name+"' size=20 onfocus='showDiv2(this)'>");   
    }
  
  // --------------End ---------------------     
    
</script>

<script>
var myCalendar=new myCalendar;
  myCalendar.year=2008;
  myCalendar.show();
  myCalendar.input("txt1");
</script>
<input type="text" name="test" onfocus="showDiv2(this)" readonly=true>