//日期的选择*******

			function isNumber(str)
			{
				var i;
				var ch;
				
				for(i = 0; i < str.length; i++)
				{
					ch = str.substring(i,i + 1);
					if(ch < "0" || ch > "9")
					{
						return false;
					}
				}
				return true;
			}

			// 一个简单的测试是否IE浏览器的表达式
			isIE = (document.all ? true : false);

			// 得到IE中各元素真正的位移量，即使这个元素在一个表格中
			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.layers[eltname]);
			}

			function hideElement(eltname) 
			{ 
				getXBrowserRef(eltname).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) 
			{
				elt = getXBrowserRef(eltname);
				if (elt.visibility == 'visible' || elt.visibility == 'show') 
				{
					elt.visibility = 'hidden';
				} 
				else 
				{
					fixPosition(eltname);
					elt.visibility = 'visible';
				}
			}

			function setPosition(elt,positionername,isPlacedUnder) 
			{
				positioner = null;
				
				if (isIE) 
				{
					positioner = document.all[positionername];
					elt.left = getIEPosX(positioner);
					elt.top = getIEPosY(positioner) + 20;
				} 
				else 
				{
					positioner = document.images[positionername];
					elt.left = positioner.x;
					elt.top = positioner.y + 20;
				}
				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,formresult,formElt) 
		    {
				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()))
				{
			       tday = today.day;
				}
				var intDaysInMonth =
				   getDays(newCal.getMonth(), newCal.getFullYear());
				var daysGrid = makeDaysGrid(startDayOfWeek,day,intDaysInMonth,newCal,eltName,attachedElement,formresult,formElt)
				if (isIE) 
				{
					var elt = document.all[eltName];
					elt.innerHTML = daysGrid;
				} 
				else 
				{
					var elt = document.layers[eltName].document;
					elt.open();
					elt.write(daysGrid);
					elt.close();
				}
			}

			function incMonth(delta,eltName,attachedElement,formresult,formElt) 
			{
				displayMonth += delta;
				if (displayMonth >= 12) 
				{
					displayMonth = 0;
					incYear(1,eltName,attachedElement,formresult,formElt);
				} 
				else if (displayMonth <= -1) 
				{
					displayMonth = 11;
					incYear(-1,eltName,attachedElement,formresult,formElt);
				} 
				else 
				{
					newCalendar(eltName,attachedElement,formresult,formElt);
				}
			}

			function incYear(delta,eltName,attachedElement,formresult,formElt) 
			{
				displayYear = parseInt(displayYear + '') + delta;
				newCalendar(eltName,attachedElement,formresult,formElt);
			}

			function makeDaysGrid(startDay,day,intDaysInMonth,newCal,eltName,attachedElement,formresult,formElt) 
			{
				var daysGrid;
				var month = newCal.getMonth();
				var year = newCal.getFullYear();
				
				var dt=new Date();
				var days =dt.getDate();
				
				var isThisYear = (year == new Date().getFullYear());
				var isThisMonth = (month == new Date().getMonth());

				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 + '\')" title=关闭窗口>×</A>]';
				daysGrid += '&nbsp;&nbsp;';
				
				
				
				daysGrid += '<A href="javascript:incMonth(-1,\'' + eltName + '\',\'' + attachedElement + '\',\'' + formresult + '\',\'' + formElt + '\')">&laquo;</A>';

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

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

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

				daysGrid += '<A href="javascript:incYear(1,\'' + eltName + '\',\'' + attachedElement + '\',\'' + formresult + '\',\'' + formElt + '\')">&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";
				   if (day > 0 && day == dayOfMonth) color="red";
				   
				   var isThisdate = (dayOfMonth == new Date().getDate());
				   
				   if (isThisYear && isThisMonth && isThisdate) color="red";
				   
				   daysGrid += '<A href="javascript:setDay(';
				   daysGrid += dayOfMonth + ',\'' + eltName + '\',\'' + formresult + '\',\'' + formElt + '\')" '
				   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,formresult,formElt) 
			{
				displayElement.value = displayYear+"-"+(displayMonth + 1) + "-" + day;
				hideElement(eltName);
								
				var y = formresult.indexOf('.');
				var formresultName = formresult.substring(0,y);
				var formresultEltName = formresult.substring(y+1);
				
				var z = formElt.indexOf('.');
				var formName = formElt.substring(0,z);
				var formEltName = formElt.substring(z+1);				
				document.forms[formresultName].elements[formresultEltName].value=displayYear+"-"+(displayMonth + 1) + "-" + day;
			}

			// fixPosition() 这个函数和前面所讲的那个函数一样
			function fixPosition(eltname) 
			{
				elt = getXBrowserRef(eltname);
				positionerImgName = eltname + 'Pos';
				// hint: try setting isPlacedUnder to false
				isPlacedUnder = false;
				if (isPlacedUnder) 
				{
					setPosition(elt,positionerImgName,true);
				} 
				else 
				{
					setPosition(elt,positionerImgName)
				}
			}

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