Javascript日期控件

/**
 *本日历选择控件由tiannet根据前人经验完善而得。大部分代码来自meizz的日历控件。
 *tiannet添加了时间选择功能、select,object标签隐藏功能，还有其它小功能。
 *使用方法：
 * (1)只选择日期   <input type="text" name="date"   readOnly onClick="setDay(this);">
 * (2)选择日期和小时  <input type="text" name="dateh"  readOnly onClick="setDayH(this);">
 * (3)选择日期和小时及分钟 <input type="text" name="datehm" readOnly onClick="setDayHM(this);">
 *设置参数的方法
 * (1)设置日期分隔符    setDateSplit(strSplit);默认为"-"
 * (2)设置日期与时间之间的分隔符  setDateTimeSplit(strSplit);默认为" "
 * (3)设置时间分隔符    setTimeSplit(strSplit);默认为":"
 * (4)设置(1),(2),(3)中的分隔符  setSplit(strDateSplit,strDateTimeSplit,strTimeSplit);
 * (5)设置开始和结束年份    setYearPeriod(intDateBeg,intDateEnd)
 *说明：
 * 默认返回的日期时间格式如同：2005-02-02 08:08
 */
//------------------ 样式定义 ---------------------------//
//功能按钮同样样式
var s_tiannet_turn_base = "height:16px;font-size:9pt;color:white;border:0 solid #CCCCCC;cursor:hand;background-color:#2650A6;";
//翻年、月等的按钮
var s_tiannet_turn = "width:28px;" + s_tiannet_turn_base;
//关闭、清空等按钮样式
var s_tiannet_turn2 = "width:22px;" + s_tiannet_turn_base;
//年选择下拉框
var s_tiannet_select = "width:64px;display:none;";
//月、时、分选择下拉框
var s_tiannet_select2 = "width:46px;display:none;";
//日期选择控件体的样式
var s_tiannet_body = "width:150px;background-color:#2650A6;display:none;z-index:9998;position:absolute;" +
  "border-left:1 solid #CCCCCC;border-top:1 solid #CCCCCC;border-right:1 solid #999999;border-bottom:1 solid #999999;";
//显示日的td的样式
var s_tiannet_day = "width:21px;height:20px;background-color:#D8F0FC;font-size:10pt;";
//字体样式
var s_tiannet_font = "color:#FFCC00;font-size:9pt;cursor:hand;";
//链接的样式
var s_tiannet_link = "text-decoration:none;font-size:9pt;color:#2650A6;";
//横线
var s_tiannet_line = "border-bottom:1 solid #6699CC";
//------------------ 变量定义 ---------------------------//
var tiannetYearSt = 1950;//可选择的开始年份
var tiannetYearEnd = 2010;//可选择的结束年份
var tiannetDateNow = new Date();
var tiannetYear = tiannetDateNow.getFullYear(); //定义年的变量的初始值
var tiannetMonth = tiannetDateNow.getMonth()+1; //定义月的变量的初始值
var tiannetDay = tiannetDateNow.getDate();
var tiannetHour = 8;//tiannetDateNow.getHours();
var tiannetMinute = 0;//tiannetDateNow.getMinutes();
var tiannetArrDay=new Array(42);          //定义写日期的数组
var tiannetDateSplit = "-";     //日期的分隔符号
var tiannetDateTimeSplit = " ";    //日期与时间之间的分隔符
var tiannetTimeSplit = ":";     //时间的分隔符号
var tiannetOutObject;      //接收日期时间的对象
var arrTiannetHide = new Array();//被强制隐藏的标签
var m_bolShowHour = false;//是否显示小时
var m_bolShowMinute = false;//是否显示分钟

var m_aMonHead = new Array(12);         //定义阳历中每个月的最大天数
    m_aMonHead[0] = 31; m_aMonHead[1] = 28; m_aMonHead[2] = 31; m_aMonHead[3] = 30; m_aMonHead[4]  = 31; m_aMonHead[5]  = 30;
    m_aMonHead[6] = 31; m_aMonHead[7] = 31; m_aMonHead[8] = 30; m_aMonHead[9] = 31; m_aMonHead[10] = 30; m_aMonHead[11] = 31;
// ---------------------- 用户可调用的函数 -----------------------------//
//用户主调函数－只选择日期
function setDay(obj){
 tiannetOutObject = obj;
 //如果标签中有值，则将日期初始化为当前值
 var strValue = tiannetTrim(tiannetOutObject.value);
 if( strValue != "" ){
  tiannetInitDate(strValue);
 }
 tiannetPopCalendar();
}
//用户主调函数－选择日期和小时
function setDayH(obj){
 tiannetOutObject = obj;
 m_bolShowHour = true;
 //如果标签中有值，则将日期和小时初始化为当前值
 var strValue = tiannetTrim(tiannetOutObject.value);
 if( strValue != "" ){
  tiannetInitDate(strValue.substring(0,10));
  var hour = strValue.substring(11,13);
  if( hour < 10 ) tiannetHour = hour.substring(1,2);
 }
 tiannetPopCalendar();
}
//用户主调函数－选择日期和小时及分钟
function setDayHM(obj){
 tiannetOutObject = obj;
 m_bolShowHour = true;
 m_bolShowMinute = true;
 //如果标签中有值，则将日期和小时及分钟初始化为当前值
 var strValue = tiannetTrim(tiannetOutObject.value);
 if( strValue != "" ){
  tiannetInitDate(strValue.substring(0,10));
  var time = strValue.substring(11,16);
  var arr = time.split(tiannetTimeSplit);
  tiannetHour = arr[0];
  tiannetMinute = arr[1];
  if( tiannetHour < 10 ) tiannetHour = tiannetHour.substring(1,2);
  if( tiannetMinute < 10 ) tiannetMinute = tiannetMinute.substring(1,2);
 }
 tiannetPopCalendar();
}
//设置开始日期和结束日期
function  setYearPeriod(intDateBeg,intDateEnd){
 tiannetYearSt = intDateBeg;
 tiannetYearEnd = intDateEnd;
}
//设置日期分隔符。默认为"-"
function setDateSplit(strDateSplit){
 tiannetDateSplit = strDateSplit;
}
//设置日期与时间之间的分隔符。默认为" "
function setDateTimeSplit(strDateTimeSplit){
 tiannetDateTimeSplit = strDateTimeSplit;
}
//设置时间分隔符。默认为":"
function setTimeSplit(strTimeSplit){
 tiannetTimeSplit = strTimeSplit;
}
//设置分隔符
function setSplit(strDateSplit,strDateTimeSplit,strTimeSplit){
 tiannetDateSplit(strDateSplit);
 tiannetDateTimeSplit(strDateTimeSplit);
 tiannetTimeSplit(strTimeSplit);
}
//设置默认的日期。格式为：YYYY-MM-DD
function setDefaultDate(strDate){
 tiannetYear = strDate.substring(0,4);
 tiannetMonth = strDate.substring(5,7);
 tiannetDay = strDate.substring(8,10);
}
//设置默认的时间。格式为：HH24:MI
function setDefaultTime(strTime){
 tiannetHour = strTime.substring(0,2);
 tiannetMinute = strTime.substring(3,5);
}
// ---------------------- end 用户可调用的函数 -----------------------------//
//------------------ begin 页面显示部分 ---------------------------//
var weekName = new Array("日","一","二","三","四","五","六");
document.write('<div id="divTiannetDate" style="'+s_tiannet_body+'" style="本日历选择控件由tiannet根据前人经验完善而成！">');
document.write('<div align="center" id="divTiannetDateText" Author="tiannet" style="padding-top:2px;">');
document.write('<span id="tiannetYearHead" Author="tiannet" style="'+s_tiannet_font+'" '+
    'onclick="spanYearCEvent();">&nbsp;年</span>');
document.write('<select id="selTianYear" style="'+s_tiannet_select+'" Author="tiannet"  '+
    ' onChange="tiannetYear=this.value;tiannetSetDay(tiannetYear,tiannetMonth);document.all.tiannetYearHead.style.display=\'\';'+
    'this.style.display=\'none\';">');
for(var i=tiannetYearSt;i <= tiannetYearEnd;i ++){
 document.writeln('<option value="' + i + '">' + i + '年</option>');
}
document.write('</select>');
document.write('<span id="tiannetMonthHead" Author="tiannet" style="'+s_tiannet_font+'" '+
    'onclick="spanMonthCEvent();">&nbsp;&nbsp;月</span>');
document.write('<select id="selTianMonth" style="'+s_tiannet_select2+'" Author="tiannet" '+
    'onChange="tiannetMonth=this.value;tiannetSetDay(tiannetYear,tiannetMonth);document.all.tiannetMonthHead.style.display=\'\';'+
    'this.style.display=\'none\';">');
for(var i=1;i <= 12;i ++){
 document.writeln('<option value="' + i + '">' + i + '月</option>');
}
document.write('</select>');
//document.write('</div>');
//document.write('<div align="center" id="divTiannetTimeText" Author="tiannet">');
document.write('<span id="tiannetHourHead" Author="tiannet" style="'+s_tiannet_font+'display:none;" '+
    'onclick="spanHourCEvent();">&nbsp;时</span>');
document.write('<select id="selTianHour" style="'+s_tiannet_select2+'display:none;" Author="tiannet" '+
    ' onChange="tiannetHour=this.value;tiannetWriteHead();document.all.tiannetHourHead.style.display=\'\';' +
    'this.style.display=\'none\';">');
for(var i=0;i <= 23;i ++){
 document.writeln('<option value="' + i + '">' + i + '时</option>');
}
document.write('</select>');
document.write('<span id="tiannetMinuteHead" Author="tiannet" style="'+s_tiannet_font+'display:none;" '+
    'onclick="spanMinuteCEvent();">&nbsp;&nbsp;分</span>');
document.write('<select id="selTianMinute" style="'+s_tiannet_select2+'display:none;" Author="tiannet" '+
    '  onChange="tiannetMinute=this.value;tiannetWriteHead();document.all.tiannetMinuteHead.style.display=\'\';'+
    'this.style.display=\'none\';">');
for(var i=0;i <= 59;i ++){
 document.writeln('<option value="' + i + '">' + i + '分</option>');
}
document.write('</select>');
document.write('</div>');
//输出一条横线
document.write('<div style="'+s_tiannet_line+'"></div>');
document.write('<div align="center" id="divTiannetTurn" style="border:0;" Author="tiannet">');
document.write('<input type="button" style="'+s_tiannet_turn+'" value="年↑" title="上一年" onClick="tiannetPrevYear();">');
document.write('<input type="button" style="'+s_tiannet_turn+'" value="年↓" title="下一年" onClick="tiannetNextYear();">&nbsp;');
document.write('<input type="button" style="'+s_tiannet_turn+'" value="月↑" title="上一月" onClick="tiannetPrevMonth();">');
document.write('<input type="button" style="'+s_tiannet_turn+'" value="月↓" title="下一月" onClick="tiannetNextMonth();">');
document.write('</div>');
//输出一条横线
document.write('<div style="'+s_tiannet_line+'"></div>');
document.write('<table border=0 cellspacing=0 cellpadding=0  bgcolor=white onselectstart="return false">');
document.write(' <tr style="background-color:#2650A6;font-size:10pt;color:white;height:22px;" Author="tiannet">');
for(var i =0;i < weekName.length;i ++){
 //输出星期
 document.write('<td width="21" align="center" Author="tiannet">' + weekName[i] + '</td>');
}
document.write(' </tr>');
document.write('</table>');
//输出天的选择
document.write('<table border=0 cellspacing=1 cellpadding=0  bgcolor=white onselectstart="return false">');
var n = 0;
for (var i=0;i<5;i++) { 
 document.write (' <tr align=center id="trTiannetDay' + i + '" >');
 for (var j=0;j<7;j++){
  document.write('<td align="center" id="tdTiannetDay' + n + '" '+
    'onClick="tiannetDay=this.innerText;tiannetSetValue(true);" ' 
   +' style="' + s_tiannet_day + '">&nbsp;</td>');
  n ++;
 }
 document.write (' </tr>');
}
document.write (' <tr align=center id="trTiannetDay5" >');
document.write('<td align="center" id="tdTiannetDay35" onClick="tiannetDay=this.innerText;tiannetSetValue(true);" ' 
    +' style="' + s_tiannet_day + '">&nbsp;</td>');
document.write('<td align="center" id="tdTiannetDay36" onClick="tiannetDay=this.innerText;tiannetSetValue(true);" ' 
    +' style="' + s_tiannet_day + '">&nbsp;</td>');
document.write('<td align="right" colspan="5"><a href="javascript:tiannetClear();" style="' + s_tiannet_link + '">清空</a>'+
    '&nbsp;<a href="javascript:tiannetHideControl();" style="' + s_tiannet_link + '">关闭</a>' +
    '&nbsp;<a href="javascript:tiannetSetValue(true);" style="' + s_tiannet_link + '">确定</a>&nbsp;' +
    '</td>');
document.write (' </tr>');
document.write('</table>');
document.write('</div>');
//------------------ end 页面显示部分 ---------------------------//
//------------------ 显示日期时间的span标签响应事件 ---------------------------//
//单击年份span标签响应
function spanYearCEvent(){
 hideElementsById(new Array("selTianYear","tiannetMonthHead"),false);
 if(m_bolShowHour) hideElementsById(new Array("tiannetHourHead"),false);
 if(m_bolShowMinute) hideElementsById(new Array("tiannetMinuteHead"),false);
 hideElementsById(new Array("tiannetYearHead","selTianMonth","selTianHour","selTianMinute"),true);
}
//单击月份span标签响应
function spanMonthCEvent(){
 hideElementsById(new Array("selTianMonth","tiannetYearHead"),false);
 if(m_bolShowHour) hideElementsById(new Array("tiannetHourHead"),false);
 if(m_bolShowMinute) hideElementsById(new Array("tiannetMinuteHead"),false);
 hideElementsById(new Array("tiannetMonthHead","selTianYear","selTianHour","selTianMinute"),true);
}
//单击小时span标签响应
function spanHourCEvent(){
 hideElementsById(new Array("tiannetYearHead","tiannetMonthHead"),false);
 if(m_bolShowHour) hideElementsById(new Array("selTianHour"),false);
 if(m_bolShowMinute) hideElementsById(new Array("tiannetMinuteHead"),false);
 hideElementsById(new Array("tiannetHourHead","selTianYear","selTianMonth","selTianMinute"),true);
}
//单击分钟span标签响应
function spanMinuteCEvent(){
 hideElementsById(new Array("tiannetYearHead","tiannetMonthHead"),false);
 if(m_bolShowHour) hideElementsById(new Array("tiannetHourHead"),false);
 if(m_bolShowMinute) hideElementsById(new Array("selTianMinute"),false);
 hideElementsById(new Array("tiannetMinuteHead","selTianYear","selTianMonth","selTianHour"),true);
}
//根据标签id隐藏或显示标签
function hideElementsById(arrId,bolHide){
 var strDisplay = "";
 if(bolHide) strDisplay = "none";
 for(var i = 0;i < arrId.length;i ++){
  var obj = document.getElementById(arrId[i]);
  obj.style.display = strDisplay;
 }
}
//------------------ end 显示日期时间的span标签响应事件 ---------------------------//
//判断某年是否为闰年
function isPinYear(year){
 var bolRet = false;
 if (0==year%4&&((year%100!=0)||(year%400==0))) {
  bolRet = true;
 }
 return bolRet;
}
//得到一个月的天数，闰年为29天
function getMonthCount(year,month){
 var c=m_aMonHead[month-1];
 if((month==2)&&isPinYear(year)) c++;
 return c;
}
//重新设置当前的日。主要是防止在翻年、翻月时，当前日大于当月的最大日
function setRealDayCount() {
 if( tiannetDay > getMonthCount(tiannetYear,tiannetMonth) ) {
  //如果当前的日大于当月的最大日，则取当月最大日
  tiannetDay = getMonthCount(tiannetYear,tiannetMonth);
 }
}
//在个位数前加零
function addZero(value){
 if(value < 10 ){
  value = "0" + value;
 }
 return value;
}
//取出空格
function tiannetTrim(str) {
 return str.replace(/(^\s*)|(\s*$)/g,"");
}
//为select创建一个option
function createOption(objSelect,value,text){
 var option = document.createElement("OPTION");
 option.value = value;
 option.text = text;
 objSelect.options.add(option);
}
//往前翻 Year
function tiannetPrevYear() {
 if(tiannetYear > 999 && tiannetYear <10000){tiannetYear--;}
 else{alert("年份超出范围（1000-9999）！");}
 tiannetSetDay(tiannetYear,tiannetMonth);
 //如果年份小于允许的最小年份，则创建对应的option
 if( tiannetYear < tiannetYearSt ) {
  tiannetYearSt = tiannetYear;
  createOption(document.all.selTianYear,tiannetYear,tiannetYear + "年");
 }
 checkSelect(document.all.selTianYear,tiannetYear);
 tiannetWriteHead();
}
//往后翻 Year
function tiannetNextYear() {
 if(tiannetYear > 999 && tiannetYear <10000){tiannetYear++;}
 else{alert("年份超出范围（1000-9999）！");return;}
 tiannetSetDay(tiannetYear,tiannetMonth);
 //如果年份超过允许的最大年份，则创建对应的option
 if( tiannetYear > tiannetYearEnd ) {
  tiannetYearEnd = tiannetYear;
  createOption(document.all.selTianYear,tiannetYear,tiannetYear + "年");
 }
 checkSelect(document.all.selTianYear,tiannetYear);
 tiannetWriteHead();
}
//选择今天
function tiannetToday() {
 tiannetYear = tiannetDateNow.getFullYear();
 tiannetMonth = tiannetDateNow.getMonth()+1;
 tiannetDay = tiannetDateNow.getDate();
 tiannetSetValue(true);
 //tiannetSetDay(tiannetYear,tiannetMonth);
 //selectObject();
}
//往前翻月份
function tiannetPrevMonth() {
 if(tiannetMonth>1){tiannetMonth--}else{tiannetYear--;tiannetMonth=12;}
 tiannetSetDay(tiannetYear,tiannetMonth);
 checkSelect(document.all.selTianMonth,tiannetMonth);
 tiannetWriteHead();
}
//往后翻月份
function tiannetNextMonth() {
 if(tiannetMonth==12){tiannetYear++;tiannetMonth=1}else{tiannetMonth++}
 tiannetSetDay(tiannetYear,tiannetMonth);
 checkSelect(document.all.selTianMonth,tiannetMonth);
 tiannetWriteHead();
}
//向span标签中写入年、月、时、分等数据
function tiannetWriteHead(){
 document.all.tiannetYearHead.innerText = tiannetYear + "年";
 document.all.tiannetMonthHead.innerText = tiannetMonth + "月";
 if( m_bolShowHour )  document.all.tiannetHourHead.innerText = " "+tiannetHour + "时";
 if( m_bolShowMinute ) document.all.tiannetMinuteHead.innerText = tiannetMinute + "分";
 tiannetSetValue(false);//给文本框赋值，但不隐藏本控件
}
//设置显示天
function tiannetSetDay(yy,mm) {
  
 setRealDayCount();//设置当月真实的日
 tiannetWriteHead();
 var strDateFont1 = "", strDateFont2 = "" //处理日期显示的风格
 for (var i = 0; i < 37; i++){tiannetArrDay[i]=""};  //将显示框的内容全部清空
 var day1 = 1;
 var 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++){
  tiannetArrDay[i]=day1;day1++;
 }
 //如果用于显示日的最后一行的第一个单元格的值为空，则隐藏整行。
 //if(tiannetArrDay[35] == ""){
 // document.all.trTiannetDay5.style.display = "none";
 //} else {
 // document.all.trTiannetDay5.style.display = "";
 //}
 for (var i = 0; i < 37; i++){ 
  var da = eval("document.all.tdTiannetDay"+i)     //书写新的一个月的日期星期排列
  if (tiannetArrDay[i]!="") { 
   //判断是否为周末，如果是周末，则改为红色字体
   if(i % 7 == 0 || (i+1) % 7 == 0){
   strDateFont1 = "<font color=#f0000>"
   strDateFont2 = "</font>"
   } else {
    strDateFont1 = "";
    strDateFont2 = ""
   }
   da.innerHTML = strDateFont1 + tiannetArrDay[i] + strDateFont2;
   //如果是当前选择的天，则改变颜色
   if(tiannetArrDay[i] == tiannetDay ) {
    da.style.backgroundColor = "#CCCCCC";
   } else {
    da.style.backgroundColor = "#EFEFEF";
   }
   da.style.cursor="hand"
  } else {
   da.innerHTML="";da.style.backgroundColor="";da.style.cursor="default"
  }
 }//end for
 tiannetSetValue(false);//给文本框赋值，但不隐藏本控件
}//end function tiannetSetDay
//根据option的值选中option
function checkSelect(objSelect,selectValue) {
 var count = parseInt(objSelect.length);
 if( selectValue < 10 && selectValue.toString().length == 2) {
  selectValue = selectValue.substring(1,2);
 }
 for(var i = 0;i < count;i ++){
  if(objSelect.options[i].value == selectValue){
   objSelect.selectedIndex = i;
   break;
  }
 }//for
}
//选中年、月、时、分等下拉框
function selectObject(){
 //如果年份小于允许的最小年份，则创建对应的option
 if( tiannetYear < tiannetYearSt ) {
  for( var i = tiannetYear;i < tiannetYearSt;i ++  ){
   createOption(document.all.selTianYear,i,i + "年");
  }
  tiannetYearSt = tiannetYear;
 }
 //如果年份超过允许的最大年份，则创建对应的option
 if( tiannetYear > tiannetYearEnd ) {
  for( var i = tiannetYearEnd+1;i <= tiannetYear;i ++  ){
   createOption(document.all.selTianYear,i,i + "年");
  }
  tiannetYearEnd = tiannetYear;
 }
 checkSelect(document.all.selTianYear,tiannetYear);
 checkSelect(document.all.selTianMonth,tiannetMonth);
 if( m_bolShowHour )  checkSelect(document.all.selTianHour,tiannetHour);
 if( m_bolShowMinute ) checkSelect(document.all.selTianMinute,tiannetMinute);
}
//给接受日期时间的控件赋值
//参数bolHideControl - 是否隐藏控件
function tiannetSetValue(bolHideControl){
 var value = "";
 if( !tiannetDay || tiannetDay == "" ){
  tiannetOutObject.value = value;
  return;
 }
 var mm = tiannetMonth;
 var day = tiannetDay;
 if( mm < 10 && mm.toString().length == 1) mm = "0" + mm;
 if( day < 10 && day.toString().length == 1) day = "0" + day;
 value = tiannetYear + tiannetDateSplit + mm + tiannetDateSplit + day;
 if( m_bolShowHour ){
  var hour = tiannetHour;
  if( hour < 10 && hour.toString().length == 1 ) hour = "0" + hour;
  value += tiannetDateTimeSplit + hour;
 }
 if( m_bolShowMinute ){
  var minute = tiannetMinute;
  if( minute < 10 && minute.toString().length == 1 ) minute = "0" + minute;
  value += tiannetTimeSplit + minute;
 }
 tiannetOutObject.value = value;
 //document.all.divTiannetDate.style.display = "none";
 if( bolHideControl ) {
  tiannetHideControl();
 }
}
//是否显示时间
function showTime(){
 if( !m_bolShowHour && m_bolShowMinute){
  alert("如果要选择分钟，则必须可以选择小时！");
  return;
 }
 hideElementsById(new Array("tiannetHourHead","selTianHour","tiannetMinuteHead","selTianMinute"),true);
 if( m_bolShowHour ){
  //显示小时
  hideElementsById(new Array("tiannetHourHead"),false);
 }
 if( m_bolShowMinute ){
  //显示分钟
  hideElementsById(new Array("tiannetMinuteHead"),false);
 }
}
//弹出显示日历选择控件，以让用户选择
function tiannetPopCalendar(){
 //隐藏下拉框，显示相对应的head
 hideElementsById(new Array("selTianYear","selTianMonth","selTianHour","selTianMinute"),true);
 hideElementsById(new Array("tiannetYearHead","tiannetMonthHead","tiannetHourHead","tiannetMinuteHead"),false);
 tiannetSetDay(tiannetYear,tiannetMonth);
 tiannetWriteHead();
 showTime();
 var dads  = document.all.divTiannetDate.style;
 var iX, iY;
  
 var h = document.all.divTiannetDate.offsetHeight;
 var w = document.all.divTiannetDate.offsetWidth;
 //计算left
 if (window.event.x + h > document.body.offsetWidth - 10    )
  iX = window.event.x - h - 5 ;
 else
  iX = window.event.x + 5;  
 if (iX <0)  
  iX=0;
 //计算top
 iY = window.event.y;
 if (window.event.y + w > document.body.offsetHeight - 10   )
  iY = document.body.scrollTop + document.body.offsetHeight - w - 5 ;
 else
  iY = document.body.scrollTop +window.event.y + 5;  
 if (iY <0)  
  iY=0;
 dads.left = iX;
 dads.top = iY;
 tiannetShowControl();
 selectObject();
}
//隐藏日历控件(同时显示被强制隐藏的标签)
function tiannetHideControl(){
 document.all.divTiannetDate.style.display = "none";
 tiannetShowObject();
 arrTiannetHide = new Array();//将被隐藏的标签对象清空
}
//显示日历控件(同时隐藏会遮挡的标签)
function tiannetShowControl(){
 document.all.divTiannetDate.style.display = "";
 tiannetHideObject("SELECT");
 tiannetHideObject("OBJECT");
}
//根据标签名称隐藏标签。如会遮住控件的select，object
function tiannetHideObject(strTagName) {
 
 x = document.all.divTiannetDate.offsetLeft;
 y = document.all.divTiannetDate.offsetTop;
 h = document.all.divTiannetDate.offsetHeight;
 w = document.all.divTiannetDate.offsetWidth;
 
 for (var i = 0; i < document.all.tags(strTagName).length; i++)
 {
  
  var obj = document.all.tags(strTagName)[i];
  if (! obj || ! obj.offsetParent)
   continue;
  // 获取元素对于BODY标记的相对坐标
  var objLeft   = obj.offsetLeft;
  var objTop    = obj.offsetTop;
  var objHeight = obj.offsetHeight;
  var objWidth = obj.offsetWidth;
  var objParent = obj.offsetParent;
  
  while (objParent.tagName.toUpperCase() != "BODY"){
   objLeft  += objParent.offsetLeft;
   objTop   += objParent.offsetTop;
   objParent = objParent.offsetParent;
  }
  //alert("控件左端:" + x + "select左端" + (objLeft + objWidth) + "控件底部:" + (y+h) + "select高:" + objTop);
  
  var bolHide = true;
  if( obj.style.display == "none" || obj.style.visibility == "hidden" || obj.getAttribute("Author") == "tiannet" ){
   //如果标签本身就是隐藏的，则不需要再隐藏。如果是控件中的下拉框，也不用隐藏。
   bolHide = false;
  }
  if(  ( (objLeft + objWidth) > x && (y + h + 20) > objTop && (objTop+objHeight) >  y && objLeft < (x+w) ) && bolHide ){
   //arrTiannetHide.push(obj);//记录被隐藏的标签对象
   arrTiannetHide[arrTiannetHide.length] = obj;
   obj.style.visibility = "hidden";
  }
  
  
 }
}
//显示被隐藏的标签
function tiannetShowObject(){
 for(var i = 0;i < arrTiannetHide.length;i ++){
  //alert(arrTiannetHide[i]);
  arrTiannetHide[i].style.visibility = "";
 }
}
//初始化日期。
function tiannetInitDate(strDate){
 var arr = strDate.split(tiannetDateSplit);
 tiannetYear = arr[0];
 tiannetMonth = arr[1];
 tiannetDay = arr[2];
}
//清空
function tiannetClear(){
 tiannetOutObject.value = "";
 tiannetHideControl();
}
 //任意点击时关闭该控件
function document.onclick(){ 
  with(window.event.srcElement){ 
 if (tagName != "INPUT" && getAttribute("Author") != "tiannet")
    tiannetHideControl();
  }
}
//按ESC键关闭该控件
function document.onkeypress(){
 if( event.keyCode == 27 ){
  tiannetHideControl();
 }
}