/**********************************/
/***自编检查日期格式函数（yyyy-m-d）**/
/**********************************/ 
	function checkdateformat3(obj)
	{
		if (obj.value!="")
		{
			var dateArr = obj.value.split("-");
			if (dateArr.length != 3 ) 
			{
				obj.value="";
			}
			for (i=0;i<3;i++)
			{
				if (!isInteger(dateArr[i]))
				{
					obj.value="";
				}
			}
			if (dateArr[0]<100 || dateArr[0]>10000 || dateArr[1]>12 || dateArr[1]<1 || dateArr[2]>31 || dateArr[2]<1)
			{
				obj.value="";
			}		
			if (dateArr[1]==4 || dateArr[1]==6 || dateArr[1]==9 || dateArr[1]==11)
			{
				if (dateArr[2]>30)
				{
					obj.value="";
				}
			}
			if (dateArr[2]>29)
			{
				obj.value="";
			}
			if (dateArr[0]%4!=0 && dateArr[1]==2)
			{
				if (dateArr[2]>28)
				{
					obj.value="";
				}
			}
			
		}
	}
/**********************************/
/******       截取空格       ******/
/**********************************/ 
function trim(str){
    	var i = 0;
        while ((i < str.length)&&((str.charAt(i) == " ")||(str.charAt(i) == "　"))){i++;}
    	var j = str.length-1;
    	while ((j >= 0)&&((str.charAt(j) == " ")||(str.charAt(j) == "　"))){j--;}
    	if( i > j ) 
    		return "";
    	else
    		return str.substring(i,j+1);
}


//是否为float，使用javascript提供的函数isNaN() 包括整数，小数
//返回值：true 不是数字
//        false 数字


/**********************************/
/*****  是否为单个数字符(0~9) *****/
/**********************************/
function isNumber(str){
    if ( (/^\d$/g).test(str) == true )  
        return true;
    return false;
}

/**********************************/
/*****      是否为整型        *****/
/**********************************/
function isInteger(str){
	if (/^\d+$/.test(str) == true) {
		return true;
	}
	return false;	
}




/**********************************/
/*****     检查日期合法性     *****/
/**********************************/
function isValidBirthday(year,month,day){
    if(year.length!=4) {
        alert("请输入四位年份如1988");
        return false;
    }
    validstr="0123456789";
    for(i=0;i<4;i++){
        if(validstr.indexOf(year.charAt(i))==-1){
            alert("生日输入有误!");            
            return false;
        }
    }
    //从1900年到当前年
    var today = new Date();
    var currentYear=today.getYear() ;//年
    
    if(year*1>currentYear || year*1<1900){
        alert("年份输入有误!");
        return false;
    }
    if(month=="04"||month=="06"||month=="09"||month=="11") {
          if(day=="31") {
              alert("本月没有31日!");
              return false;
          }
      }
     if(month=="02") {
          if(year%4==0&&year%100!=0||year%400==0) {   /*闰年 */
              if(day=="30"||day=="31") {
                  alert("本月没有"+day+"日!");
                  return false;
              }
          }
          else {      /*不是闰年*/
              if(day=="29"||day=="30"||day=="31") {
                  alert("本月没有"+day+"日!");
                  return false;
              }
          }
      }
    
    return true;
}


/**********************************/
/*****        捕捉回车        *****/
/**********************************/
function keyDown(){
	var keycode=window.event.keyCode;
	if(keycode==13){
		//do sth like check();
	}
}
//指定回车事件document.onkeydown=keyDown;

//以下为日期的javascript


<!-- Begin  //place these scripts within BODY tag if you are using IE 4.0 or below.
//****************************************************************************
// PopCalendar 3.50, Emailware(please mail&commend me if u like it)
// Originally coded by Liming(Victor) Weng, email: victorwon@netease.com
// Release date: 2000.3.13
// Anyone may modify it to satify his needs, but please leave this comment ahead.
//****************************************************************************

var gdCtrl = new Object();
var goSelectTag = new Array();
var gcGray = "#808080";
var gcToggle = "#ffff00";
var gcBG = "#F7F7F7";

var gdCurDate = new Date();
var giYear = gdCurDate.getFullYear();
var giMonth = gdCurDate.getMonth()+1;
var giDay = gdCurDate.getDate();

//****************************************************************************
// Param: popCtrl is the widget beyond which you want this calendar to appear;
//        dateCtrl is the widget into which you want to put the selected date.
// i.e.: <input type="text" name="dc" style="text-align:center" readonly><INPUT type="button" value="V" onclick="fPopCalendar(dc,dc);return false">
//****************************************************************************
function fPopCalendar(popCtrl, dateCtrl)
{
	checkdateformat3(popCtrl);
	event.cancelBubble=true;
	gdCtrl = dateCtrl;
	var dateValue = popCtrl.value;
	if (dateValue != "")
	{
		arrDate = dateValue.split("-");
		var selYear = arrDate[0];
		var selMonth = arrDate[1]*1;
		fSetYearMon(selYear,selMonth);
	}
	else
		fSetYearMon(giYear, giMonth);

	var point = fGetXY(popCtrl);
	with (VicPopCal.style) {
		left = point.x;
		top  = point.y+popCtrl.offsetHeight+1;
		width = VicPopCal.offsetWidth;
		height = VicPopCal.offsetHeight;
		fToggleTags(point);
		visibility = 'visible';
	}

	VicPopCal.focus();
}

function fSetDate(iYear, iMonth, iDay){
  gdCtrl.value = iYear+"-"+iMonth+"-"+iDay; //Here, you could modify the locale as you need !!!!
  fHideCalendar();
}

function fHideCalendar(){
  VicPopCal.style.visibility = "hidden";
  for (i in goSelectTag)
  	goSelectTag[i].style.visibility = "visible";
  goSelectTag.length = 0;
}

function fSetSelected(aCell){
  var iOffset = 0;
  var iYear = parseInt(tbSelYear.value);
  var iMonth = parseInt(tbSelMonth.value);

  aCell.bgColor = gcBG;
  with (aCell.children["cellText"]){
  	var iDay = parseInt(innerText);
  	if (color==gcGray)
		iOffset = (Victor<10)?-1:1;
	iMonth += iOffset;
	if (iMonth<1) {
		iYear--;
		iMonth = 12;
	}else if (iMonth>12){
		iYear++;
		iMonth = 1;
	}
  }
  fSetDate(iYear, iMonth, iDay);
}

function Point(iX, iY){
	this.x = iX;
	this.y = iY;
}

function fBuildCal(iYear, iMonth) {
  var aMonth=new Array();
  for(i=1;i<7;i++)
  	aMonth[i]=new Array(i);

  var dCalDate=new Date(iYear, iMonth-1, 1);
  var iDayOfFirst=dCalDate.getDay();
  var iDaysInMonth=new Date(iYear, iMonth, 0).getDate();
  var iOffsetLast=new Date(iYear, iMonth-1, 0).getDate()-iDayOfFirst+1;
  var iDate = 1;
  var iNext = 1;

  for (d = 0; d < 7; d++)
	aMonth[1][d] = (d<iDayOfFirst)?-(iOffsetLast+d):iDate++;
  for (w = 2; w < 7; w++)
  	for (d = 0; d < 7; d++)
		aMonth[w][d] = (iDate<=iDaysInMonth)?iDate++:-(iNext++);
  return aMonth;
}

function fDrawCal(iYear, iMonth, iCellHeight, iDateTextSize) {
  var WeekDay = new Array("日","一","二","三","四","五","六");
  var styleTD = " BGCOLOR='#F7F7F7' STYLE='WIDTH:25px; HEIGHT:22px; TEXT-ALIGN:center; FONT:bold "+iDateTextSize+" 宋体;";            //Coded by Liming Weng(Victor Won) email:victorwon@netease.com

  with (document) {
	write("<TR>");
	for(i=0; i<7; i++)
		write("<TD "+styleTD+"COLOR:#990099'>" + WeekDay[i] + "</TD>");
	write("</TR>");

  	for (w = 1; w < 7; w++) {
		write("<TR>");
		for (d = 0; d < 7; d++) {
			write("<TD ID=calCell "+styleTD+"CURSOR:hand;' OnMouseOver='this.bgColor=gcToggle' OnMouseOut='this.bgColor=gcBG' onclick='fSetSelected(this)'>");
			write("<FONT id=cellText Victor='Liming Weng'> </FONT>");
			write("</TD>")
		}
		write("</TR>");
	}
  }
}

function fUpdateCal(iYear, iMonth) {
  myMonth = fBuildCal(iYear, iMonth);
  var i = 0;
  for (w = 0; w < 6; w++)
	for (d = 0; d < 7; d++)
		with (cellText[(7*w)+d]) {
			Victor = i++;
			if (myMonth[w+1][d]<0) {
				color = gcGray;
				innerText = -myMonth[w+1][d];
			}else{
				color = ((d==0)||(d==6))?"red":"black";
				innerText = myMonth[w+1][d];
			}
		}
}

function fSetYearMon(iYear, iMon){
  tbSelMonth.options[iMon-1].selected = true;
  for (i = 0; i < tbSelYear.length; i++)
	if (tbSelYear.options[i].value == iYear)
		tbSelYear.options[i].selected = true;
  fUpdateCal(iYear, iMon);
}

function fPrevMonth(){
  var iMon = tbSelMonth.value;
  var iYear = tbSelYear.value;

  if (--iMon<1) {
	  iMon = 12;
	  iYear--;
  }

  fSetYearMon(iYear, iMon);
}

function fNextMonth(){
  var iMon = tbSelMonth.value;
  var iYear = tbSelYear.value;

  if (++iMon>12) {
	  iMon = 1;
	  iYear++;
  }

  fSetYearMon(iYear, iMon);
}

function fToggleTags(){
  with (document.all.tags("SELECT")){
 	for (i=0; i<length; i++)
 		if ((item(i).Victor!="Won")&&fTagInBound(item(i))){
 			item(i).style.visibility = "hidden";
 			goSelectTag[goSelectTag.length] = item(i);
 		}
  }
}

function fTagInBound(aTag){
  with (VicPopCal.style){
  	var l = parseInt(left);
  	var t = parseInt(top);
  	var r = l+parseInt(width);
  	var b = t+parseInt(height);
	var ptLT = fGetXY(aTag);
	return !((ptLT.x>r)||(ptLT.x+aTag.offsetWidth<l)||(ptLT.y>b)||(ptLT.y+aTag.offsetHeight<t));
  }
}

function fGetXY(aTag){
  var oTmp = aTag;
  var pt = new Point(0,0);
  do {
  	pt.x += oTmp.offsetLeft;
  	pt.y += oTmp.offsetTop;
  	oTmp = oTmp.offsetParent;
  } while(oTmp.tagName!="BODY");
  return pt;
}

var gMonths = 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");

with (document) {
write("<DIV ID='VicPopCal' OnClick='event.cancelBubble=true' STYLE='POSITION:absolute; VISIBILITY:hidden; BORDER:1px solid #336699; WIDTH:195px; Z-INDEX:100;'>");
write("<TABLE WIDTH='100%' CELLPADDING=0 CELLSPACING=0 BORDER=0>");
write("<TR>");
write("<TD VALIGN='middle' ALIGN='center' HEIGHT='25' BGCOLOR='#CEDBE7' STYLE='BORDER-BOTTOM:1px solid #336699;'>");
write("<TABLE CELLPADDING=0 CELLSPACING=0 BORDER=0>");
write("<TR ALIGN='center'>");
write("	<TD CLASS='Bar1' OnMouseOver=\"this.className='Bar2';\" OnMouseOut=\"this.className='Bar1';\" OnClick='fPrevMonth()'>7</TD>");
write("	<TD CLASS='Bar'><DIV CLASS='cBox1'><DIV CLASS='cBox2'>");
write("<SELECT NAME='tbSelYear' OnChange='fUpdateCal(tbSelYear.value, tbSelMonth.value)' Victor='Won' STYLE='POSITION:relative; LEFT:-2px; TOP:-2px; FONT-SIZE:12px; WIDTH:63px; LINE-HEIGHT:14px; BORDER:0px;'>");
for(i=1900;i<=2050;i++)
	write("<OPTION VALUE='"+i+"'>"+i+"年</OPTION>");
write("</SELECT>");
write("	</DIV></DIV></TD>");
write("	<TD CLASS='Bar'><DIV CLASS='cBox1'><DIV CLASS='cBox2'>");
write("<SELECT NAME='tbSelMonth' OnChange='fUpdateCal(tbSelYear.value, tbSelMonth.value)' Victor='Won' STYLE='POSITION:relative; LEFT:-2px; TOP:-2px; FONT-SIZE:12px; WIDTH:63px; LINE-HEIGHT:14px; BORDER:0px;'>");
for (i=0; i<12; i++)
	write("<OPTION VALUE='"+(i+1)+"'>"+gMonths[i]+"</OPTION>");
write("</SELECT>");
write("	</DIV></DIV></TD>");
write("	<TD CLASS='Bar1' OnMouseOver=\"this.className='Bar2';\" OnMouseOut=\"this.className='Bar1';\" OnClick='fNextMonth()'>8</TD>");
write("	</TR>");
write("</TABLE>");
write("</TD>");
write("</TR><TR>");
write("<TD ALIGN='center'>");
write("<DIV STYLE='BACKGROUND-COLOR:teal;'><TABLE WIDTH='100%' BORDER='0' CELLPADDING='0' CELLSPACING=0>");
fDrawCal(giYear, giMonth, 12, 12);
write("</TABLE></DIV>");
write("</TD>");
write("</TR><TR><TD ALIGN='center' STYLE='HEIGHT:25px; BACKGROUND-COLOR:#CEDBE7; BORDER-TOP:1px solid #336699;'>");
write("<SPAN STYLE='CURSOR:hand; FONT:12px 宋体' OnClick='fSetDate(giYear,giMonth,giDay)' onMouseOver='this.style.color=gcToggle' onMouseOut='this.style.color=0'>今天："+giYear+"年"+giMonth+"月"+giDay+"日</SPAN>");
write("</TD></TR>");
write("</TABLE></Div>");
write("<SCRIPT event=onclick() for=document>fHideCalendar()</SCRIPT>");
}

// End -- Coded by Liming Weng, email: victorwon@netease.com -->




function arrowtag(namestr,valuestr,size)
{
	istr=unescape('%u25bc');   
	document.write("<INPUT STYLE='FONT-SIZE:12px; WIDTH:18px; HEIGHT:18px; FONT-FAMILY:宋体; BORDER:1px solid #999999; BACKGROUND:transparent; PADDING-TOP:2px;' TYPE='button' VALUE='"+istr+"' OnClick='fPopCalendar("+namestr+","+namestr+"); return false'>");
}

/**********************************/
/***是否为正确的日期(yyyy-mm-dd)***/
/**********************************/

function isValidDate(datestr){
	var dateArr = datestr.split("-");
	if (dateArr.length != 3 ) return false;
	for (i=0;i<3;i++){
		if (!isInteger(dateArr[i]))
			return false;
	}
	return true;
}


/**********************************/
/***   日期date1是否大于date2   ***/
/**********************************/
function dateBDate(date1,date2){
	if (!isValidDate(date1) || !isValidDate(date2)) 
		return false;
	var date1Arr = date1.split("-");
	var date2Arr = date2.split("-");
	
	var year1 = parseInt(date1Arr[0]);
	var month1 = parseInt(date1Arr[1]*1);
	var date1 = parseInt(date1Arr[2]*1);
	
	var year2 = parseInt(date2Arr[0]);
	var month2 = parseInt(date2Arr[1]*1);
	var date2 = parseInt(date2Arr[2]*1);
	
	if (year1 < year2) return false;
	if (year1 == year2){//年相等，判断月
		if(month1 < month2) return false;
		if(month1 == month2){//月相等，判断日
			if (date1 <= date2) return false;
		}
	}
	return true;
}

/**********************************/
/***   日期date1是否等于date2   ***/
/*****added by Lijq 2002-5-18******/
/**********************************/
function dateEQUDate(date1,date2){
	if (!isValidDate(date1) || !isValidDate(date2)) 
		return false;
	var date1Arr = date1.split("-");
	var date2Arr = date2.split("-");
	
	var year1 = parseInt(date1Arr[0]);
	var month1 = parseInt(date1Arr[1]*1);
	var date1 = parseInt(date1Arr[2]*1);
	
	var year2 = parseInt(date2Arr[0]);
	var month2 = parseInt(date2Arr[1]*1);
	var date2 = parseInt(date2Arr[2]*1);
	
	if ((year1 != year2)||(month1 != month2)||(date1 != date2)) {
		 return false;
	}
	return true;
}

/**********************************/
/*日期datestr是否大于等于当前日期**/
/**********************************/

function dateBECurrent(datestr){
	if (!isValidDate(datestr)) return false;
	var currentDate = new Date();
	var cYear = currentDate.getYear();
	var cMonth = currentDate.getMonth()+1;
	var cDate = currentDate.getDate();
	var dateArr = datestr.split("-");
	var year = parseInt(dateArr[0]);
	var month = parseInt(dateArr[1]*1);
	var date = parseInt(dateArr[2]*1);
	if (year < cYear) return false;
	if (year == cYear){//年相等，判断月
		if(month < cMonth) return false;
		if(month == cMonth){//月相等，判断日
			if (date < cDate) return false;
		}
	}
	return true;
}

/**********************************/
/*日期datestr是否大于当前日期**/
/** add by humh **/
/**********************************/

function dateBCurrent(datestr){
	if (!isValidDate(datestr)) return false;
	var currentDate = new Date();
	var cYear = currentDate.getYear();
	var cMonth = currentDate.getMonth()+1;
	var cDate = currentDate.getDate();
	var dateArr = datestr.split("-");
	var year = parseInt(dateArr[0]);
	var month = parseInt(dateArr[1]*1);
	var date = parseInt(dateArr[2]*1);
	if (year < cYear) return false;
	if (year == cYear){//年相等，判断月
		if(month < cMonth) return false;
		if(month == cMonth){//月相等，判断日
			if (date <= cDate) return false;
		}
	}
	return true;
}

/**********************************/
/*开始日期、结束日期的合法性检查**/
/** add by hu_minghui **/
/**********************************/

function isDate(datestr1,datestr2){
	if (!isValidDate(datestr1) || !isValidDate(datestr2)) 
		return false;
	
	
	if (dateBCurrent(datestr1)){
		alert("开始日期不得大于当前日期！");
		return false;
        }
        if (dateBCurrent(datestr2)){
		alert("结束日期不得大于当前日期！");
		return false;
        }
        /*
        if(dateBDate(datestr2,datestr1)){        
		alert("结束日期应大于开始日期!");
		return false;
        } 
        */

        var date1Arr = datestr1.split("-");
	var year1    = parseInt(date1Arr[0]);
	var month1   = parseInt(date1Arr[1]);
	var Date1    = parseInt(date1Arr[2]);
	
	var date2Arr = datestr2.split("-");
	var year2    = parseInt(date2Arr[0]);
	var month2   = parseInt(date2Arr[1]);
	var Date2    = parseInt(date2Arr[2]);
	
	if (year2 < year1) {
		  alert("开始日期不能大于结束日期，请重新输入");
                  return false;
        }
	
	if (year2 > year1){//跨年份
		if( year2 - year1 > 1 ){
                        alert("清单查询不能超过1个月，请重新输入");
                        return false;
                }
                else if( year2 - year1 == 1){
                        if( (month1==12)&&(month2==1) ){
                               if( Date2 > Date1 ){                   
                               	   alert("清单查询不能超过1个月，请重新输入");
                               	   return false;
                               }
                        }
                        else {
                               alert("清单查询不能超过1个月，请重新输入");
                               return false;
                        }	
                }	
	}
	else if (year2 == year1){//年相等，判断月
		
                if(month2 < month1){ //年份相等，终止月份小于起始月份
                	 alert("开始日期不能大于结束日期，请重新输入");
                	 return false;
                } 	 
		if(month2 == month1){//月相等，判断日
			if (Date2 < Date1){ 
			 alert("开始日期不能大于结束日期，请重新输入");
                	 return false;
                	}
		}
	
		else{	
                        if((month2 - month1 == 1)&&(Date2 > Date1)){//判断日
                               alert("清单查询不能超过1个月，请重新输入");
                               return false;
                        }	
		}
		if( month2 - month1 > 1){
		    	alert("清单查询不能超过1个月，请重新输入");
                    	return false;
                }
	}
	return true;
}