isIE = (document.all ? true : false);

function getIEPosX(elt) { return getIEPos(elt,"Left"); }
function getIEPosY(elt) { return getIEPos(elt,"Top"); }
function getIEPos(elt,which) {
 iPos = 0
 while (elt!=null) {
  iPos += elt["offset" + which]
  elt = elt.offsetParent
 }
 return iPos
}

function getXBrowserRef(eltname) {
 return (isIE ? document.all[eltname].style : document.getElementById(eltname).style);
}

//function hideElement(eltname) { ;getXBrowserRef(eltname).visibility = 'hidden'; }
function hideElement(eltname) {document.getElementById(eltname).style.visibility = 'hidden'; }

// 按不同的浏览器进行处理元件的位置
function moveBy(elt,deltaX,deltaY) {
 if (isIE) {
  elt.left = elt.pixelLeft + deltaX;
  elt.top = elt.pixelTop + deltaY;
 } else {
  elt.left += deltaX;
  elt.top += deltaY;
 }
}

function toggleVisible(eltname,inputBox) {

 elt = getXBrowserRef(eltname);

 if (elt.visibility == 'visible' || elt.visibility == 'show') {
   elt.visibility = 'hidden';

 } else {
   fixPosition(eltname,inputBox);
   elt.visibility = 'visible';
   var MyToday=new Date().getDate();
  
   if (inputBox.value=="")
   {
   	
   	 //window.setTimeout("document.getElementById('"+eltname+"a_"+MyToday+"').focus();", 100);
   }
	else
	{
		//window.setTimeout("document.getElementById('"+eltname+"a_"+inputBox.value.split("-")[2]*1+"').focus();", 100);
	}
	window.setTimeout("document.getElementById('"+eltname+"a_1').focus();", 100);

 }
}

function moveFocus()
{
	alert(keyCode);	
}

function setPosition(elt,positionername,isPlacedUnder) {
 positioner = null;
var clientwidth,clientheight;
var eltleft,elttop;
if (isIE) {
  positioner = document.all[positionername];
  eltleft = getIEPosX(positioner);
  elttop = getIEPosY(positioner);
  clientwidth = document.body.clientWidth;
  clientheight = document.body.clientHeight;
  if ((clientwidth-eltleft)>150){
    elt.left = clientwidth-200;
    //elt.top = getIEPosY(positioner);
  }else{
     var lleft=getIEPosX(positioner)-85;
     if (lleft<0) lleft=0;
     elt.left = lleft;
     elt.top = getIEPosY(positioner)+17;
  };
 } else {
  positioner = document.images[positionername];
  elt.left = positioner.x;
  elt.top = positioner.y;
 }
 if (isPlacedUnder) { moveBy(elt,0,positioner.height); }
}


//——————————————————————————————————————

         // 判断浏览器
         isIE = (document.all ? true : false);

         // 初始月份及各月份天数数组
         var months = new Array("一　月", "二　月", "三　月", "四　月", "五　月", "六　月", "七　月",
	 "八　月", "九　月", "十　月", "十一月", "十二月");
         var daysInMonth = new Array(31, 28, 31, 30, 31, 30, 31, 31,
            30, 31, 30, 31);
	 var displayMonth = new Date().getMonth();
	 var displayYear = new Date().getFullYear();
	 var displayDivName;
	 var displayElement;

         function getDays(month, year) {
            //测试选择的年份是否是润年？
            if (1 == month)
               return ((0 == year % 4) && (0 != (year % 100))) ||
                  (0 == year % 400) ? 29 : 28;
            else
               return daysInMonth[month];
         }

         function getToday() {
            // 得到今天的日期
            this.now = new Date();
            this.year = this.now.getFullYear();
            this.month = this.now.getMonth();
            this.day = this.now.getDate();
         }

         // 并显示今天这个月份的日历
         today = new getToday();

         function newCalendar(eltName,attachedElement) {
         	//alert(attachedElement.value.split("-")[2]*1);
	    if (attachedElement) {
	       if (displayDivName && displayDivName != eltName) hideElement(displayDivName);
	       displayElement = attachedElement;
	    }
	    displayDivName = eltName;
            today = new getToday();
            var parseYear = parseInt(displayYear + '');
            var newCal = new Date(parseYear,displayMonth,1);
            var day = -1;
            var startDayOfWeek = newCal.getDay();
            if ((today.year == newCal.getFullYear()) &&
                  (today.month == newCal.getMonth()))
	    {
               day = today.day;
            }
            var intDaysInMonth =
               getDays(newCal.getMonth(), newCal.getFullYear());
            var daysGrid = makeDaysGrid(startDayOfWeek,day,intDaysInMonth,newCal,eltName)
	    if (isIE) {
	       var elt = document.all[eltName];
	       elt.innerHTML = daysGrid;
	    } else {
	       var elt = document.getElementById(eltName);//.document;
	       //elt.open();
	       //elt.write(daysGrid);
	       //elt.close();
		   elt.innerHTML = daysGrid;
	    }
	 }

	 function incMonth(delta,eltName) {
	   displayMonth += delta;
	   if (displayMonth >= 12) {
	     displayMonth = 0;
	     incYear(1,eltName);
	   } else if (displayMonth <= -1) {
	     displayMonth = 11;
	     incYear(-1,eltName);
	   } else {
	     newCalendar(eltName);
	   }
	      var MyToday=new Date().getDate();
		  document.getElementById(eltName+"a_"+MyToday).focus();	
	 }

	 function incYear(delta,eltName) {
	   displayYear = parseInt(displayYear + '') + delta;
	   newCalendar(eltName);
	      var MyToday=new Date().getDate();
		  document.getElementById(eltName+"a_"+MyToday).focus();	
	 }

	 function makeDaysGrid(startDay,day,intDaysInMonth,newCal,eltName) {
	    var daysGrid;
	    var month = newCal.getMonth();
	    var year = newCal.getFullYear();
	    var isThisYear = (year == new Date().getFullYear());
	    var isThisMonth = (day > -1)
	    daysGrid = '<table border=1 cellspacing=0 cellpadding=2><tr><td bgcolor=#ffffff nowrap>';
	    daysGrid += '<font face="courier new, courier" size=2>';
	    daysGrid += '<a href="javascript:hideElement(\'' + eltName + '\')">x</a>';
	    daysGrid += '&nbsp;&nbsp;';
	    daysGrid += '<a href="javascript:incMonth(-1,\'' + eltName + '\')">&laquo; </a>';

	    daysGrid += '<b>';
	    if (isThisMonth) { daysGrid += '<font color=red>' + months[month] + '</font>'; }
	    else { daysGrid += months[month]; }
	    daysGrid += '</b>';

	    daysGrid += '<a href="javascript:incMonth(1,\'' + eltName + '\')"> &raquo;</a>';
	    daysGrid += '&nbsp;&nbsp;&nbsp;';
	    daysGrid += '<a href="javascript:incYear(-1,\'' + eltName + '\')">&laquo; </a>';

	    daysGrid += '<b>';
	    if (isThisYear) { daysGrid += '<font color=red>' + year + '</font>'; }
	    else { daysGrid += ''+year; }
	    daysGrid += '</b>';

	    daysGrid += '<a href="javascript:incYear(1,\'' + eltName + '\')"> &raquo;</a><br>';
	    daysGrid += '&nbsp;Su Mo Tu We Th Fr Sa&nbsp;<br>&nbsp;';
	    var dayOfMonthOfFirstSunday = (7 - startDay + 1);
	    for (var intWeek = 0; intWeek < 6; intWeek++) {
	       var dayOfMonth;
	       for (var intDay = 0; intDay < 7; intDay++) {
	         dayOfMonth = (intWeek * 7) + intDay + dayOfMonthOfFirstSunday - 7;
		 if (dayOfMonth <= 0) {
	           daysGrid += "&nbsp;&nbsp; ";
		 } else if (dayOfMonth <= intDaysInMonth) {
		   var color = "blue";
		   var eID= eltName+"a_"+dayOfMonth;
		   if (day > 0 && day == dayOfMonth) color="red";
		   daysGrid += '<a id='+eID+'  href="javascript:setDay(';
		   daysGrid += dayOfMonth + ',\'' + eltName + '\')" '
		   daysGrid += 'style="color:' + color + '">';
		   var dayString = dayOfMonth + "</a> ";
		   if (dayString.length == 6) dayString = '0' + dayString;
		   daysGrid += dayString;
		 }
	       }
	       if (dayOfMonth < intDaysInMonth) daysGrid += "<br>&nbsp;";
	    }
	    return daysGrid + "</td></tr></table>";
	 }

	 function setDay(day,eltName) {
	  if ((displayMonth+1)<10){
        	month="0"+(displayMonth+1);
         }
          else
               month=displayMonth+1;
        if(day<10){
	     day="0"+day;
        }
	   displayElement.value = displayYear+"-"+(month)+"-" + day ;
	   month="";
	   hideElement(eltName);     
	 }


//——————————————————————————————————————

function getPositions(obj,pos){
   var t=eval("obj."+pos);
   
   while(obj=obj.offsetParent){
      t+=eval("obj."+pos);
   }
   return t;
}

// fixPosition() 这个函数和前面所讲的那个函数一样
//
function fixPosition(eltname,inputBox) {
	elt = getXBrowserRef(eltname);
	var obj,e;
	if (isIE)
	{
		var obj=event.srcElement;
	} else {
		obj=arguments[0] || window.event;
		//obj=e.target;
		obj=inputBox;
	}
	//alert(e);
	var m_top=getPositions(obj,"offsetTop")+20;
 var m_left=getPositions(obj,"offsetLeft");
 clientwidth = document.body.clientWidth;
 clientheight = document.body.clientHeight;
 if ((clientwidth-m_left)<200)
 {
 	 m_left=clientwidth-200;
 };
  	
 if ((clientheight-m_top)<150)
 {
 	 m_top=clientheight-150;
 };

 elt.left = m_left;
 elt.top = m_top;
 //document.getElementById(eltname).style.left = m_left;
 //document.getElementById(eltname).style.top = m_top;
}

function toggleDatePicker(eltName,formElt) {
  var x = formElt.indexOf('.');
  var formName = formElt.substring(0,x);
  var formEltName = formElt.substring(x+1);
  newCalendar(eltName,document.forms[formName].elements[formEltName]);
  toggleVisible(eltName,document.forms[formName].elements[formEltName]);
}