// ********************
// Begin Popup Calendar
// ********************
var popCalDstFld;
var temp;
var popCalWin;

// ******************************
// Expected params:
// [0] Window Name
// [1] Destination Field
// [2] Short Date Format
// [3] Month Names
// [4] Day Names
// [5] Localized Today string
// [6] Localized Close string
// [7] Window Title
// [8] First Day of Week
// ******************************
var tmpDate         = new Date();
var tmpString       = "";
var tmpNum          = 0;
var popCalDateVal;
var dstWindowName   = "";
var MinYear;
var MaxYear;
var bShowDropDownForMonthAndYear;

function UCUCalendar()
{
    //Check for the right number of arguments
	if (arguments.length < 11)
	{
		alert("UCUCalendar(): Wrong number of arguments.");
		return void(0);
	}
	
	this.WindowName = "";
	this.DestinationField = "";
	this.ShortDateFormat = "";
	this.MonthNames = "";
	this.DayNames = "";
	this.ToDay = "";
	this.Close = "";
	this.Title = "";
	this.FirstDayOfWeek ="";
    this.MinYear = 1920;
    this.MaxYear = 2050;
    this.bShowDropDownForMonthAndYear = false;
	
	//Get the command line arguments -- Localization is optional
	this.WindowName = UCUCalendar.arguments[0];
	this.DestinationField = UCUCalendar.arguments[1];
	temp = UCUCalendar.arguments[1];
	this.ShortDateFormat = UCUCalendar.arguments[2]; //Localized Short Date Format String
	this.MonthNames = UCUCalendar.arguments[3]; //Localized Month Names String
	this.DayNames = UCUCalendar.arguments[4];   //Localized Day Names String
	this.ToDay = UCUCalendar.arguments[5];  //Localized Today string
	this.Close = UCUCalendar.arguments[6];  //Localized Close string
	this.Title = UCUCalendar.arguments[7];  //Window Title
	this.FirstDayOfWeek = UCUCalendar.arguments[8];  //First Day of Week
	this.MinYear = UCUCalendar.arguments[9];  //Minimum Year;
	this.MaxYear = UCUCalendar.arguments[10];  //Maximum Year;
	this.bShowDropDownForMonthAndYear =UCUCalendar.arguments[11];  //Show DropDown For Month And Year;	
	
	//Events
	this.ShowCalendar = Calendar_ShowCal;
};

function Calendar_ShowCal()
{
	//Initialize the window to an empty object.
	popCalWin = new Object();
	
	//Check for the right number of arguments
	
	if (this.WindowName == "" || this.DestinationField == "")
	{
		alert("UCUCalendar(): Wrong number of arguments.");
		return void(0);
	}
	
	//check destination field name
	temp = this.DestinationField;
	if (this.DestinationField != "")
	{
	  popCalDstFld = document.getElementById(this.DestinationField);
	}

	//default localized short date format if not provided
	popCalDstFmt = this.ShortDateFormat;
	if (popCalDstFmt  == "" || typeof popCalDstFmt == "undefined")
	  popCalDstFmt = "M/d/yyyy";

	//default localized months string if not provided
	popCalMonths=this.MonthNames;
	if (popCalMonths == "" || typeof popCalMonths == "undefined")
	  popCalMonths = "Jan,Feb,Mar,Apr,May,Jun,Jul,Aug,Sep,Oct,Nov,Dec";
 
	//default localized months string if not provided
	popCalDays=this.DayNames;
	if (popCalDays == "" || typeof popCalDays == "undefined")
	  popCalDays = "Sun,Mon,Tue,Wed,Thu,Fri,Sat";
	
	//default localized today string if not provided
	popCalToday=this.ToDay;
	if (popCalToday == "" || typeof popCalToday == "undefined")
	  popCalToday = "Today";

	//default localized close string if not provided
	popCalClose=this.Close;
	if (popCalClose == "" || typeof popCalClose == "undefined")
	  popCalClose = "Close";

	//default window title if not provided
	popCalTitle=this.Title;
	if (popCalTitle == "" || typeof popCalTitle == "undefined")
	  popCalTitle = "Calendar";
	  
	popCalFirstDayWeek=this.FirstDayOfWeek;
	if (popCalFirstDayWeek == "" || typeof popCalFirstDayWeek== "undefined")
	  popCalFirstDayWeek = 1;
	  
	MinYear = this.MinYear;
	MaxYear = this.MaxYear;
	bShowDropDownForMonthAndYear = this.bShowDropDownForMonthAndYear;
 
	tmpString = new String(popCalDstFld.value);  
	//If tmpString is empty (meaning that the field is empty) 
	//use todays date as the starting point

	//Get ToDayDate
	sToday = new Date();
	if(tmpString == "")
	{
		if (MaxYear<sToday.getFullYear())
			popCalDateVal = new Date("01/01/" + MaxYear);
		else
			popCalDateVal = new Date()	;
	}
	else
	{
		//Make sure the century is included, if it isn't, add this 
		//century to the value that was in the field
		tmpNum = tmpString.lastIndexOf( "/" );
		if ( (tmpString.length - tmpNum) == 3 )
		{
			tmpString = tmpString.substring(0,tmpNum + 1)+"20"+tmpString.substr(tmpNum+1);
			popCalDateVal = new Date(tmpString);
		}
		else
		{
			//localized date support:
			//If we got to this point, it means the field that was passed 
			//in has no slashes in it. Use an extra function to build the date 
			//according to supplied date formatstring.
			popCalDateVal = getDateFromFormat(tmpString,popCalDstFmt);
		}
	}
	
	//Make sure the date is a valid date.  Set it to today if it is invalid
	//"NaN" is the return value for an invalid date
	if( popCalDateVal.toString() == "NaN" || popCalDateVal.toString() == "0")
	{
		popCalDateVal = new Date();
		popCalDstFld.value = "";
	}
			
	//Set the base date to midnight of the first day of the specified month, 
	//this makes things easier?
 	var dateString = String(popCalDateVal.getMonth()+1) + "/" + String(popCalDateVal.getDate()) + "/" + String(popCalDateVal.getFullYear());

	//Call the routine to draw the initial calendar
	reloadCalPopup(dateString, dstWindowName);
	
	return void(0);
}
 
function closeCalPopup()
{
	//Can't tell the child window to close itself, the parent window has to 
	//tell it to close.
	popCalWin.close();
	return void(0);
}
 
function reloadCalPopup() //[0]dateString, [1]dstWindowName
{
	//Set the window's features here

	var windowFeatures = "toolbar=no, location=no, status=no, menubar=no, scrollbars=no, resizable=no, height=270, width=270, top=" + ((screen.height - 270)/2).toString()+",left="+((screen.width - 270)/2).toString();
	var tmpDate = new Date( reloadCalPopup.arguments[0] );
	
	if (tmpDate.toString() == "Invalid Date")
	    tmpDate = new Date();
	
	tmpDate.setDate(1);
	
	//Get the calendar data
	var popCalData = calPopupSetData(tmpDate,reloadCalPopup.arguments[1]);
 
	//Check to see if the window has been initialized, create it if it hasn't been
	if( popCalWin.toString() == "[object Object]" )
	{
		popCalWin = window.open("",reloadCalPopup.arguments[1],windowFeatures);
		popCalWin.opener = self;
		// Window im Vordergrund
		popCalWin.focus();
	}
	else 
	{
        popCalWin.document.close();
		popCalWin.document.clear();
    }
    
    //this is the line with the big problem
    popCalWin.document.write(popCalData);
    
    if (bShowDropDownForMonthAndYear=='true') SetDate(tmpDate);
    
	return void(1);
}

function SetDate(tmpDate)
{
    popCalWin.document.getElementsByName("Month")[0].value = tmpDate.getMonth()+1;
    popCalWin.document.getElementsByName("Year")[0].value = tmpDate.getFullYear();
    
    
}

 
function calPopupSetData(firstDay,dstWindowName)
{
	var popCalData = "";
    var lastDate = 0;
	var fnt = new Array( "<FONT SIZE=\"1\">", "<B><FONT SIZE=\"2\">", "<FONT SIZE=\"2\" COLOR=\"#EF741D\"><B>");
	var dtToday = new Date();
	var thisMonth = firstDay.getMonth();
	var thisYear = firstDay.getFullYear();
	var nPrevMonth = (thisMonth == 0 ) ? 11 : (thisMonth - 1);
	var nNextMonth = (thisMonth == 11 ) ? 0 : (thisMonth + 1);
	var nPrevMonthYear = (nPrevMonth == 11) ? (thisYear - 1): thisYear;
	var nNextMonthYear = (nNextMonth == 0) ? (thisYear + 1): thisYear;
	var sToday = String((dtToday.getMonth()+1) + "/01/" + dtToday.getFullYear());
	var sPrevMonth = String((nPrevMonth+1) + "/01/" + nPrevMonthYear);
	var sNextMonth = String((nNextMonth+1) + "/01/" + nNextMonthYear);
	var sPrevYear1 = String((thisMonth+1) + "/01/" + (thisYear - 1));
	var sNextYear1 = String((thisMonth+1) + "/01/" + (thisYear + 1));
 	var tmpDate = new Date( sNextMonth );
	
	tmpDate = new Date( tmpDate.valueOf() - 1001 );
	lastDate = tmpDate.getDate();

	if (this.popCalMonths.split) // javascript 1.1 defensive code
	{
		var monthNames = this.popCalMonths.split(",");
		var dayNames = this.popCalDays.split(",");
	}
	else  // Need to build a js 1.0 split algorithm, default English for now
	{
		var monthNames = new Array("January","February","March","April","May","June","July","August","September","October","November","December");
		var dayNames = new Array("Sun","Mon","Tue","Wed","Thu","Fri","Sat")
	}

 	var styles = "<style><!-- body{font-family:Arial,Helvetica,sans-serif;font-size:9pt}; td {  font-family: Arial, Helvetica, sans-serif; font-size: 9pt; color: #666666}; A { text-decoration: none; };TD.day { border-bottom: solid black; border-width: 0px; }--></style>"
	var cellAttribs = "align=\"center\" class=\"day\" BGCOLOR=\"#F1F1F1\"onMouseOver=\"temp=this.style.backgroundColor;this.style.backgroundColor='#CCCCCC';\" onMouseOut=\"this.style.backgroundColor=temp;\""
	var cellAttribs2 = "align=\"center\" BGCOLOR=\"#F1F1F1\" onMouseOver=\"temp=this.style.backgroundColor;this.style.backgroundColor='#CCCCCC';\" onMouseOut=\"this.style.backgroundColor=temp;\""
	var htmlHead = "<HTML><HEAD><TITLE>"+popCalTitle+"</TITLE>" + styles + "</HEAD><script type='text/javascript' language='javascript' src='UCUCalendar.js'></script><BODY BGCOLOR=\"#F1F1F1\" TEXT=\"#000000\" LINK=\"#364180\" ALINK=\"#FF8100\" VLINK=\"#424282\">";
	var htmlTail = "</BODY></HTML>";
	var closeAnchor = "<CENTER><input type=button value=\""+popCalClose+"\" onClick=\"javascript:window.opener.closeCalPopup()\"></CENTER>";            
	var todayAnchor ="";
	if (MaxYear >= dtToday.getFullYear() || MinYear >= dtToday.getFullYear() || bShowDropDownForMonthAndYear=='false')
	{
		todayAnchor= "<A HREF=\"javascript:window.opener.reloadCalPopup('"+sToday+"','"+dstWindowName+"');\">"+popCalToday+"</A>";
	}
	else
	{
	  sToday = String((dtToday.getMonth()+1) + "/01/" + MaxYear);
	  firstDay = new Date(sToday);
	}
	
	var prevMonthAnchor = "";
	var nextMonthAnchor = "";
	var prevYear1Anchor = "";
	var nextYear1Anchor = "";
	
	if (bShowDropDownForMonthAndYear=='true')
	{   
	    var sMonths =  popCalMonths.split(",");	    
	    prevMonthAnchor = "<SELECT style='width=60px' NAME=Month onchange=\"javascript:window.opener.reloadCalPopup(Month.value + '/01/' + Year.value  ,'"+dstWindowName+"');\";>"
	    for (var i=0; i<sMonths.length; i++)
	    {
	        prevMonthAnchor +=  "<OPTION VALUE=" + (i+1) + ">" + sMonths[i];
	    }	    
        prevMonthAnchor +=  "</SELECT>";
        
        
        nextMonthAnchor = "<SELECT style='width=60px' NAME=Year onchange=\"javascript:window.opener.reloadCalPopup(Month.value + '/01/' + Year.value  ,'"+dstWindowName+"');\";>"
        for (var i = MinYear; i<=MaxYear; i++)
        {
            nextMonthAnchor +=  "<OPTION VALUE=" + i + ">" + i;
        }
        nextMonthAnchor +=  "</SELECT>"
        
	}
	else
	{
	    var prevMonthAnchor = "<A HREF=\"javascript:window.opener.reloadCalPopup('"+sPrevMonth+"','"+dstWindowName+"');\">" + monthNames[nPrevMonth] + "</A>";
	    var nextMonthAnchor = "<A HREF=\"javascript:window.opener.reloadCalPopup('"+sNextMonth+"','"+dstWindowName+"');\">" + monthNames[nNextMonth] + "</A>";
	    var prevYear1Anchor = "<A HREF=\"javascript:window.opener.reloadCalPopup('"+sPrevYear1+"','"+dstWindowName+"');\">"+(thisYear-1)+"</A>";
	    var nextYear1Anchor = "<A HREF=\"javascript:window.opener.reloadCalPopup('"+sNextYear1+"','"+dstWindowName+"');\">"+(thisYear+1)+"</A>";
    }
    
    
    
		
	popCalData += (htmlHead + fnt[1]);
	popCalData += ("<DIV align=\"center\">");
	popCalData += ("<TABLE BORDER=\"0\" cellspacing=\"0\" callpadding=\"0\" width=\"250\"><TR><TD width=\"45\">&nbsp</TD>");
	popCalData += ("<TD width=\"45\" align=\"center\" " + cellAttribs2);
	popCalData += (" >");
	popCalData += (fnt[0]+prevYear1Anchor+"</FONT></TD>");
	popCalData += ("<TD width=\"70\" align=\"center\" "+cellAttribs2);
	popCalData += (" >");
	popCalData += (fnt[0]+todayAnchor+"</FONT></TD>");
	popCalData += ("<TD width=\"45\" align=\"center\" "+cellAttribs2);
	popCalData += (" >");
	popCalData += (fnt[0]+nextYear1Anchor+"</FONT></TD><TD width=\"45\">&nbsp</TD>");
	popCalData += ("</TR></TABLE>");
	popCalData += ("<TABLE BORDER=\"0\" cellspacing=\"0\" callpadding=\"0\" width=\"250\">");          
	popCalData += ("<TR><TD width=\"55\" align=\"center\" "+cellAttribs2);
	popCalData += (" >");
	popCalData += (fnt[0] + prevMonthAnchor + "</FONT></TD>");
	popCalData += ("<TD width=\"140\" align=\"center\">");
	popCalData += ("&nbsp;&nbsp;"+fnt[1]+"<FONT COLOR=\"#000000\">" + monthNames[thisMonth] + ", " + thisYear + "&nbsp;&nbsp;</FONT></TD>");
	popCalData += ("<TD width=\"55\" align=\"center\" "+cellAttribs2);
	popCalData += (" >");
	popCalData += (fnt[0]+nextMonthAnchor+"</FONT></TD></TR></TABLE><BR>");       
	popCalData += ("<TABLE BORDER=\"0\" cellspacing=\"2\" cellpadding=\"1\"  width=\"245\">" );
	popCalData += ("");
	popCalData += ("<TR>");
	
	var xday = 0;
	for (xday = 0; xday < 7; xday++)
	{
		popCalData += ("<TD width=\"35\" align=\"center\">"+fnt[1]+"<FONT COLOR=\"#000000\">"+dayNames[(xday+popCalFirstDayWeek)%7]+"</FONT></TD>");
	};
	popCalData += ("</TR>");
	
	var calDay = 0;
	var monthDate = 1;
	var weekDay = firstDay.getDay();
	do
	{
		popCalData += ("<TR>");
		for (calDay = 0; calDay < 7; calDay++ )
		{
			if(((weekDay+7-popCalFirstDayWeek)%7 != calDay) || (monthDate > lastDate))
			{
				popCalData += ("<TD width=\"35\">"+fnt[1]+"&nbsp;</FONT></TD>");
				continue;
			}
			else
			{
				anchorVal = "<A HREF=\"javascript:window.opener.calPopupSetDate(window.opener.popCalDstFld,'" + constructDate(monthDate,thisMonth+1,thisYear) + "');window.opener.closeCalPopup()\">";
				jsVal = "javascript:window.opener.calPopupSetDate(window.opener.popCalDstFld,'" + constructDate(monthDate,thisMonth+1,thisYear) + "');window.opener.closeCalPopup()";

				popCalData += ("<TD width=\"35\" "+cellAttribs+" onClick=\""+jsVal+"\">");
				
				if ((firstDay.getMonth() == dtToday.getMonth()) && (monthDate == dtToday.getDate()) && (thisYear == dtToday.getFullYear()) )
					popCalData += (anchorVal+fnt[2]+monthDate+"</A></FONT></TD>");
				else
					popCalData += (anchorVal+fnt[1]+monthDate+"</A></FONT></TD>");
				
				weekDay++;
				monthDate++;
			}
		}
		weekDay = popCalFirstDayWeek;
		popCalData += ("</TR>");
	} while( monthDate <= lastDate );
	
	popCalData += ("</TABLE></DIV><BR>");
 
	popCalData += (closeAnchor+"</FONT>"+htmlTail);
	return( popCalData );
}
 
function calPopupSetDate()
{
	calPopupSetDate.arguments[0].value = calPopupSetDate.arguments[1];
}

// utility function
function padZero(num)
{
  return ((num <= 9) ? ("0" + num) : num);
}

// Format short date
function constructDate(d,m,y)
{
  var fmtDate = this.popCalDstFmt
  fmtDate = fmtDate.replace ('dd', padZero(d))
  fmtDate = fmtDate.replace ('d', d)
  fmtDate = fmtDate.replace ('MM', padZero(m))
  fmtDate = fmtDate.replace ('M', m)
  fmtDate = fmtDate.replace ('yyyy', y)
  fmtDate = fmtDate.replace ('yy', padZero(y%100))
  return fmtDate;
}

// ------------------------------------------------------------------
// Utility functions for parsing in getDateFromFormat()
// ------------------------------------------------------------------
function _isInteger(val) {
	var digits="1234567890";
	for (var i=0; i < val.length; i++) {
		if (digits.indexOf(val.charAt(i))==-1) { return false; }
		}
	return true;
	}
function _getInt(str,i,minlength,maxlength) {
	for (var x=maxlength; x>=minlength; x--) {
		var token=str.substring(i,i+x);
		if (token.length < minlength) { return null; }
		if (_isInteger(token)) { return token; }
		}
	return null;
	}
	
// ------------------------------------------------------------------
// getDateFromFormat( date_string , format_string )
//
// This function takes a date string and a format string. It matches
// If the date string matches the format string, it returns the 
// getTime() of the date. If it does not match, it returns 0.
// ------------------------------------------------------------------
function getDateFromFormat(val,format) {
	val=val+"";
	format=format+"";
	var i_val=0;
	var i_format=0;
	var c="";
	var token="";
	var x,y;
	var now=new Date();
	var year=now.getYear();
	var month=now.getMonth()+1;
	var date=1;
		
	while (i_format < format.length) {
		// Get next token from format string
		c=format.charAt(i_format);
		token="";
		while ((format.charAt(i_format)==c) && (i_format < format.length)) {
			token += format.charAt(i_format++);
			}
		// Extract contents of value based on format token
		if (token=="yyyy" || token=="yy" || token=="y") {
			if (token=="yyyy") { x=4;y=4; }
			if (token=="yy")   { x=2;y=2; }
			if (token=="y")    { x=2;y=4; }
			year=_getInt(val,i_val,x,y);
			if (year==null) { return 0; }
			i_val += year.length;
			if (year.length==2) {
				if (year > 70) { year=1900+(year-0); }
				else { year=2000+(year-0); }
				}
			}
		else if (token=="MM"||token=="M") {
			month=_getInt(val,i_val,token.length,2);
			if(month==null||(month<1)||(month>12)){return 0;}
			i_val+=month.length;}
		else if (token=="dd"||token=="d") {
			date=_getInt(val,i_val,token.length,2);
			if(date==null||(date<1)||(date>31)){return 0;}
			i_val+=date.length;}
		else {
			if (val.substring(i_val,i_val+token.length)!=token) {return 0;}
			else {i_val+=token.length;}
			}
		}
	// If there are any trailing characters left in the value, it doesn't match
	if (i_val != val.length) { return 0; }
	// Is date valid for month?
	if (month==2) {
		// Check for leap year
		if ( ( (year%4==0)&&(year%100 != 0) ) || (year%400==0) ) { // leap year
			if (date > 29){ return 0; }
			}
		else { if (date > 28) { return 0; } }
		}
	if ((month==4)||(month==6)||(month==9)||(month==11)) {
		if (date > 30) { return 0; }
		}
	var newdate=new Date(year,month-1,date);
	return newdate;
}


// ******************
// End Popup Calendar
// ******************