//...................................................................................
//DropCalendar.js - Popup Calendar - Date Selector
//...................................................................................

//Global variables
var dtToday=new Date();
var Cal=null;
var MonthName=["ינואר", "פברואר", "מרץ", "אפריל", "מאי", "יוני","יולי", "אוגוסט", "ספטמבר", "אוקטובר", "נובמבר", "דצמבר"];
var WeekDayName=["א","ב","ג","ד","ה","ו","ש"];	
//var WeekDayName=["ראשון","שני","שלישי","רביעי","חמישי","שישי","שבת"];	
//var MonthName=["January", "February", "March", "April", "May", "June","July", "August", "September", "October", "November", "December"];
//var WeekDayName=["Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"];	
var exDateTime;//Existing Date and Time
var BodyOverflow="";
//Configurable parameters
var DefaultFormat="DDMMYYYY";// Default Format to display date.
var cnTop="200";//top coordinate of calendar window.
var cnLeft="500";//left coordinate of calendar window
var cnWidth="175";//width of calendar window - Height is automatic.
var WeekChar=1;//number of character for week day. if 2 then Mo,Tu,We. if 3 then Mon,Tue,Wed.
var CellWidth=24;//Width of day cell.
var DateSeparator="/";//Date Separator, you can change it to "/" if you want.

var MonthYearColor="#FFFFFF";//Font Color of Month and Year in Calendar header.
var WeekHeadColor="#FFFFFF";//Background Color in Week header.
var SundayColor="#FFFFFF";//Background color of Sunday.
var SaturdayColor="#FFFFFF";//Background color of Saturday.
var WeekDayColor="#FFFFFF";//Background color of weekdays.
var FontColor="black";//color of font in Calendar day cell.
var TodayColor="#EB9536";//Background color of today.
var SelDateColor="#BBBB00";//Backgrond color of selected date in textbox.
var CalendarBackColor = "#1e3e53";//Backgrond color of Calendar Window.
var YrSelColor="#1F374B";//color of font of Year selector.
var NavFontSize="2"; //Font size of line of navigation links.
var CalFontSize="2"; //Font size of line of navigation links.
var vDropCalander="";
var TodayClass="calendar-date-today";//Class of today
var SelDateClass="calendar-date-selected";//Class of selected date
var RegularClass="calendar-date-reg";//Class of regular day
var CallFunction = null;
//end Configurable parameters
//end Global variable


function OpenCal(e,pCtrl,pFormat,fn) {
	if( Cal ) {
		if( Cal.elem ) {
			var id = Cal.Ctrl.id;
			CloseCal(); //Calendar was open somewhere so close it.
			if( id == pCtrl ) //The user clicked the same control that opened us so and return.
				return;
		}
	} 
	Cal=new Calendar(dtToday);
	if (pCtrl!=null)
	{
		Cal.Ctrl = getCtrl(pCtrl);
		if( !Cal.Ctrl )
		 Cal.Ctrl = {};
		 if( !Cal.Ctrl.id )
		  Cal.Ctrl.id = {};
		Cal.Ctrl.id = pCtrl;
	}
	if( pCtrl==null )
		return;
	if (pFormat!=null)
		Cal.Format=pFormat.toUpperCase();
	else
		Cal.Format=DefaultFormat.toUpperCase();
	cnLeft=getLeft(Cal.Ctrl);
	
	CallFunction = fn;
	
	var exDateTime="";
	exDateTime=Cal.Ctrl.value;
	if (exDateTime!=null && exDateTime!="" && exDateTime!="undefined")//Parse Date String
	{
		var Sp1;//Index of Date Separator 1
		var Sp2;//Index of Date Separator 2 
		var tSp1;//Index of Time Separator 1
		var tSp1;//Index of Time Separator 2
		var strMonth;
		var strDate;
		var strYear;
		var intMonth;
		var YearPattern;
		var strHour;
		var strMinute;
		var strSecond;
		//parse month
		Sp1=exDateTime.indexOf(DateSeparator,0)
		Sp2=exDateTime.indexOf(DateSeparator,(parseInt(Sp1)+1));
		
		if ((Cal.Format.toUpperCase()=="DDMMYYYY") || (Cal.Format.toUpperCase()=="DDMMMYYYY"))
		{
			strMonth=exDateTime.substring(Sp1+1,Sp2);
			strDate=exDateTime.substring(0,Sp1);
		}
		else if ((Cal.Format.toUpperCase()=="MMDDYYYY") || (Cal.Format.toUpperCase()=="MMMDDYYYY"))
		{
			strMonth=exDateTime.substring(0,Sp1);
			strDate=exDateTime.substring(Sp1+1,Sp2);
		}
		if (isNaN(strMonth))
			intMonth=Cal.GetMonthIndex(strMonth);
		else
			intMonth=parseInt(strMonth,10)-1;	
		if ((parseInt(intMonth,10)>=0) && (parseInt(intMonth,10)<12))
			Cal.Month=intMonth;
		//end parse month
		//parse Date
		if ((parseInt(strDate,10)<=Cal.GetMonDays()) && (parseInt(strDate,10)>=1))
			Cal.Date=strDate;
		//end parse Date
		//parse year
		strYear=exDateTime.substring(Sp2+1,Sp2+5);
		YearPattern=/^\d{4}$/;
		if (YearPattern.test(strYear))
			Cal.Year=parseInt(strYear,10);
		//end parse year
	}
	e = e || window.event;
	var xCoord = (e.x)? e.x : e.clientX;
	var yCoord = (e.y)? e.y : e.clientY;
	RenderCal(xCoord , yCoord);
}

function getCtrl(Elem)
{
 var elem = null;
 if(document.getElementById) 
 {
  elem = document.getElementById(Elem);
 } 
 else if (document.all)
 {
  elem = document.all[Elem];
 }
 return elem;
}

function getTop(Elem) 
{
 var yPos = Elem.offsetTop;
 var tempEl = Elem.offsetParent;
 while (tempEl != null) 
 {
  yPos += tempEl.offsetTop;
  tempEl = tempEl.offsetParent;
 }
 //alert(yPos);
 return yPos;
}

function getLeft(Elem) 
{
 xPos = Elem.offsetLeft;
 tempEl = Elem.offsetParent;
 while (tempEl != null) 
 {
  xPos += tempEl.offsetLeft;
  tempEl = tempEl.offsetParent;
 }
 //alert(xPos)
 return xPos-70;
}

function RenderCal(posx , posy)
{
	var vCalHeader;
	var vCalData;
	var i;
	var j;
	var SelectStr;
	var vDayCount=0;
	var vFirstDay;

	vCalHeader="<table id='calT1' border=0 cellpadding=0 cellspacing=0 width='100%' height='100%' dir='rtl' style='border: 1px solid #ffffff;'><tr><td bgcolor='"+CalendarBackColor+"' style='border: 1px solid #1e3e53;'><table border=0 cellpadding=1 cellspacing=0 width='100%' align='center' valign='top' style='XXborder-left: 1px solid #ffffff;'>";
	//Month Selector
	vCalHeader+="<tr><td colspan='7'><table class='calendar-header' border=0 width='100%' height='20' cellpadding=0 cellspacing=0><tr>";
	//Decrement Year <<
	//vCalHeader+="<td align='left' width='30'><img src='/images/guideHabama_CalNextNext_Mekomy.gif' border='0' onclick='DecYear();RenderCal();' title='" + (Cal.Year-1) + "' alt='" + (Cal.Year-1) + "'></td>"
	//Decrement Month <
	vCalHeader+="<td align='left' width='14'>";
	if(Cal.Month <= dtToday.getMonth() && Cal.Year <= dtToday.getFullYear()) {
		vCalHeader+="&nbsp;";
	} else {
		vCalHeader+="<img src='/images/guideHabama_CalNext_Mekomy.gif' border='0' onclick='DecMonth();RenderCal();' title='" + Cal.GetMonthName(true,-1) + "' alt='" + Cal.GetMonthName(true,-1) + "'>";
	}
	vCalHeader+="</td>";
	// Month and year being viewed
	vCalHeader+="<td align='center' style='font: bold 12px arial; color: #ffffff;'>"+Cal.GetMonthName(true)+" " + Cal.Year + "</td>"
	//Increment Month >
	vCalHeader+="<td align='right' width='14'><img src='/images/guideHabama_CalBack_Mekomy.gif' border='0' onclick='IncMonth();RenderCal();' title='" + Cal.GetMonthName(true,1) + "' alt='" + Cal.GetMonthName(true,1) + "'></td>";	
	//Increment Year >>
	//vCalHeader+="<td align='right' width='20'><img src='/images/guideHabama_CalBackBack_Mekomy.gif' border='0' onclick='IncYear();RenderCal();' title='" + (Cal.Year+1) + "' alt='" + (Cal.Year+1) + "'></td>";
	//Close for when you change your mind
	vCalHeader+="<td align='center' width='17'>&nbsp;<img src='/images/guideHabama_CalClose_Mekomy.gif' border='0' onclick='CloseCal();' title='Close' alt='Close'></td></tr></table></td>";
	vCalHeader+="</tr>";
	//Week day header
	vCalHeader+="<tr height='19' bgcolor="+WeekHeadColor+">";
	for (i=0;i<7;i++)
	{
		vCalHeader+="<td class='calendar-week-day' align='center'>"+WeekDayName[i].substr(0,WeekChar)+"</td>";
	}
	vCalHeader+="</tr></table><table border=0 cellpadding=1 cellspacing=0 width='100%' align='center' valign='top' style='border-left: 1px solid #18304d;'>";	
	
	if(isPast(Cal.Date))
		Cal.Date = dtToday.getDate();
	
	//Calendar detail
	CalDate=new Date(Cal.Year,Cal.Month);
	CalDate.setDate(1);
	vFirstDay=CalDate.getDay();
	vCalData="<tr height='19'>";
	for (i=0;i<vFirstDay;i++)
	{
		vCalData=vCalData+GenCell();
		vDayCount=vDayCount+1;
	}
	for (j=1;j<=Cal.GetMonDays();j++)
	{
		var strCell;
		vDayCount=vDayCount+1;
		if ((j==dtToday.getDate())&&(Cal.Month==dtToday.getMonth())&&(Cal.Year==dtToday.getFullYear()))
			if (j==Cal.Date) {
				strCell=GenCell(j,SelDateClass);
			} else {
				strCell=GenCell(j,TodayClass);//Highlight today's date
			}
		else
		{
			if (j==Cal.Date)
			{
				strCell=GenCell(j,SelDateClass);
			}
			else
			{	 
				if (vDayCount%7==0)
					strCell=GenCell(j,RegularClass);
				else if ((vDayCount+6)%7==0)
					strCell=GenCell(j,RegularClass);
				else
					strCell=GenCell(j,RegularClass);
			}		
		}						
		vCalData=vCalData+strCell;

		if((vDayCount%7==0)&&(j<Cal.GetMonDays()))
		{
			vCalData=vCalData+"</tr><tr height='19'>";
		}
	}
	if(vDayCount%7 > 0) {
		for(t=vDayCount%7;t<7;t++) {
			vCalData=vCalData+GenCell();
		}
	}
	vDropCalander = vCalHeader + vCalData + "</td></tr></table></table></div>";
	var obj = document.getElementById(Cal.Ctrl.id);	
	//var leftpos = getLeft(obj);
	//var bottom = getTop(obj) + obj.offsetHeight;

	var leftpos = posx;
	var bottom = posy;
	var Width = getClientWidth();
	var Height = getClientHeight();
	var ScrollPos = getScrollTop();
	var ScrollHeight = document.body.scrollHeight;
	bottom += ScrollPos;

	if( Cal.elem==null) { 
		try {
			Cal.elem = document.createElement('<div id="cal" style=" position:absolute;   top:'+ bottom + 'px; left:' + leftpos + 'px; z-index:102; width:' + cnWidth + 'px; height:0px;"></div>');
		} catch(err) {
			Cal.elem = document.createElement("div");
			Cal.elem.setAttribute('type','file');
			Cal.elem.setAttribute('id','cal');
			Cal.elem.setAttribute("style"," position:absolute;  top:"+bottom+"px; left:"+leftpos+"px; z-index:102; width:" + cnWidth + "px; height:0px;");
		}
	}
	Cal.elem.innerHTML = vDropCalander;
	BodyOverflow = document.body.style.overflow;
	//alert(ScrollHeight);

	if( BodyOverflow == 'auto' && ScrollHeight <= Height ) // if height of page is close to browser client height
		document.body.style.overflow = 'hidden';           // and overflow is auto, the addition of the div could
	document.body.appendChild(Cal.elem);                   // make the scrollbar show so lets hide it while the
	var elemHeight = Cal.elem.offsetHeight;                // calendar is up
	if( !elemHeight )
		elemHeight = document.getElementById('calT1').offsetHeight;
	if( Cal.elem.offsetTop + elemHeight > (Height + ScrollPos) ) {
		if( Cal.elem.style.top ) {
			Cal.elem.style.top = (getTop(obj) - elemHeight) + "px"; 
		} else {
			Cal.elem.setAttribute("style.top",(getTop(obj) - Cal.elem.offsetHeight) + "px"); 
		}
	}
	while( Cal.elem.offsetLeft + Cal.elem.offsetWidth > (Width) )
		if( Cal.elem.style.left )
			Cal.elem.style.left = (getLeft(Cal.elem) - 1) + "px";
		else
			Cal.elem.setAttribute("style.left",(getLeft(Cal.elem) - 1) + "px");
			
}
	
function CloseCal() 
{
 document.body.removeChild(Cal.elem);
 document.body.style.overflow = BodyOverflow;
 
 delete Cal;
 Cal = null;
}

function CalClicked(PValue) 
{
 Cal.Ctrl.value = Cal.FormatDate(PValue);
 if(CallFunction)
	CallFunction();
 CloseCal();
}

function isPast(dayValue) {
	var TempCalDate = new Date(Cal.Year,Cal.Month);
	TempCalDate.setDate(dayValue);
	var TempToday = new Date(dtToday.getFullYear(),dtToday.getMonth());
	TempToday.setDate(dtToday.getDate());
	
	return (TempCalDate < TempToday);
}

function GenCell(pValue,pColor)//Generate table cell with value
{
	var PValue;
	var PCellStr;
	var vColor;
	var vHLstr1;//HighLight string
	var vHlstr2;
	var sClass="";
	var CellClick;
	
	if (pValue==null) {
		PValue="&nbsp;";
		CellClick = "";
	} else {
		PValue=pValue;
		CellClick = "onclick=\"CalClicked('"+PValue+"');\"";
	}
	
	if (pColor!=null) {
		vColor="bgcolor='"+pColor+"'";
		sClass=pColor;
	} else {
		vColor="";
		sClass="calendar-date-empty";
	}
	
	if (isPast(pValue)) {
		CellClick = '';
		sClass='calendar-date-past';
	}
	
	/*if ((pHighLight!=null)&&(pHighLight))
		{vHLstr1="color='"+pHighLight+"'><b>";vHLstr2="</b>";}
	else
		{vHLstr1=">";vHLstr2="";}*/
	var dq = '"';	
	PCellStr="<td class='"+sClass+"' "+CellClick+" width='24' align='center'>"+PValue+"</td>";
	return PCellStr;
}

function getClientWidth() 
{
 	return getResults (
		window.innerWidth ? window.innerWidth : 0,
		document.documentElement ? document.documentElement.clientWidth : 0,
		document.body ? document.body.clientWidth : 0
	);
}

function getScrollTop() 
{
	return getResults (
		window.pageYOffset ? window.pageYOffset : 0,
		document.documentElement ? document.documentElement.scrollTop : 0,
		document.body ? document.body.scrollTop : 0
	);
}

function getClientHeight() 
{
	return getResults (
		window.innerHeight ? window.innerHeight : 0,
		document.documentElement ? document.documentElement.clientHeight : 0,
		document.body ? document.body.clientHeight : 0
	);
}

function getResults(n_win, n_docel, n_body) 
{
	var n_result = n_win ? n_win : 0;
	if (n_docel && (!n_result || (n_result > n_docel)))
		n_result = n_docel;
	return n_body && (!n_result || (n_result > n_body)) ? n_body : n_result;
}

function Calendar(pDate,pCtrl,elem)
{
	//Properties
	this.Date=pDate.getDate();//selected date
	this.Month=pDate.getMonth();//selected month number
	this.Year=pDate.getFullYear();//selected year in 4 digits
	
		
	this.Ctrl=pCtrl;
	if( !this.Ctrl )
	 this.Ctrl={};
	if( !this.Ctrl.id )
	 this.Ctrl.id={}; 
	this.elem = elem;
	this.Format="ddMMyyyy";
	this.Separator=DateSeparator;
}

function GetMonthIndex(shortMonthName)
{
	for (i=0;i<12;i++)
	{
		if (MonthName[i].substring(0,3).toUpperCase()==shortMonthName.toUpperCase())
		{	return i;}
	}
}
Calendar.prototype.GetMonthIndex=GetMonthIndex;

function IncYear()
{	Cal.Year++;}
Calendar.prototype.IncYear=IncYear;

function DecYear()
{	Cal.Year--;}
Calendar.prototype.DecYear=DecYear;

function IncMonth()
{	
 Cal.Month++;
 if( Cal.Month == 12 )
 {
  Cal.Month = 0;
  Cal.Year++;
 }
}
Calendar.prototype.IncMonth=IncMonth;

function DecMonth()
{
 Cal.Month--;
 if( Cal.Month < 0 )
 {
  Cal.Month = 11;
  Cal.Year--;
 }
}
Calendar.prototype.DecMonth=DecMonth;
	
function SwitchMth(intMth)
{	Cal.Month=intMth;}
Calendar.prototype.SwitchMth=SwitchMth;

function GetMonthName(IsLong,nextPrev)
{
 var Month=MonthName[this.Month];
 if( nextPrev < 0 )
 {
  if( this.Month == 0 )
	  Month=MonthName[11];
	 else 
   Month=MonthName[this.Month-1];
 }
 if( nextPrev > 0 )
 {
  if( this.Month == 11 )
	  Month=MonthName[0];
	 else 
   Month=MonthName[this.Month+1];
 }
	if (IsLong)
		return Month;
	else
		return Month.substr(0,3);
}
Calendar.prototype.GetMonthName=GetMonthName;

function GetMonDays()//Get number of days in a month
{
	var DaysInMonth=[31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];
	if (this.IsLeapYear())
	{
		DaysInMonth[1]=29;
	}	
	return DaysInMonth[this.Month];	
}
Calendar.prototype.GetMonDays=GetMonDays;

function IsLeapYear()
{
	if ((this.Year%4)==0)
	{
		if ((this.Year%100==0) && (this.Year%400)!=0)
		{
			return false;
		}
		else
		{
			return true;
		}
	}
	else
	{
		return false;
	}
}
Calendar.prototype.IsLeapYear=IsLeapYear;

function FormatDate(pDate)
{
	if (this.Format.toUpperCase()=="DDMMYYYY")
		return (pDate+DateSeparator+(this.Month+1)+DateSeparator+this.Year);
	else if (this.Format.toUpperCase()=="DDMMMYYYY")
		return (pDate+DateSeparator+this.GetMonthName(false)+DateSeparator+this.Year);
	else if (this.Format.toUpperCase()=="MMDDYYYY")
		return ((this.Month+1)+DateSeparator+pDate+DateSeparator+this.Year);
	else if (this.Format.toUpperCase()=="MMMDDYYYY")
		return (this.GetMonthName(false)+DateSeparator+pDate+DateSeparator+this.Year);			
}
Calendar.prototype.FormatDate=FormatDate;