//
//	Calendar
//

var weekend = [0,6];

var gNow = new Date();
var ggWinCal;

Calendar.Language="en";

Calendar.Translations = new Array();
Calendar.Translations["en"]=["Su", "Mo", "Tu", "We", "Th", "Fr", "Sa", "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December", "Close", "Calendar"];
Calendar.Translations["es"]=["Dm", "Lu", "Ma", "Mi", "Ju", "Vi", "Sa", "Enero", "Febrero", "Marzo", "Abril", "Mayo", "Junio", "Julio", "Agosto", "Septiembre", "Octubre", "Noviembre", "Diciembre", "Cerrar", "Calendario"];
Calendar.Translations["ca"]=["Dm", "Dl", "Dm", "Dc", "Dj", "Dv", "Ds", "Gener", "Febrer", "Març", "Abril", "Maig", "Juny", "Juliol", "Agost", "Setembre", "Octubre", "Novembre", "Desembre", "Tancar", "Calendari"];
Calendar.Translations["va"]=["Dm", "Dl", "Dm", "Dc", "Dj", "Dv", "Ds", "Gener", "Febrer", "Març", "Abril", "Maig", "Juny", "Juliol", "Agost", "Setembre", "Octubre", "Novembre", "Desembre", "Tancar", "Calendari"];

Calendar.Days = ["Su", "Mo", "Tu", "We", "Th", "Fr", "Sa"];
Calendar.Months = ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"];

// Non-Leap year Month days..
Calendar.DOMonth = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];
// Leap year Month days..
Calendar.lDOMonth = [31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];

function Calendar(p_item, p_WinCal, p_month, p_year, p_format) {
	if ((p_month == null) && (p_year == null))	return;

	if (p_WinCal == null)
		this.gWinCal = ggWinCal;
	else
		this.gWinCal = p_WinCal;
	
	if (p_month == null) {
		this.gMonthName = null;
		this.gMonth = null;
	} else {
		this.gMonthName = Calendar.get_month(p_month);
		this.gMonth = new Number(p_month);
	}

	this.gYear = p_year;
	this.gFormat = p_format;
	this.gReturnItem = p_item;
}

Calendar.get_month = Calendar_get_month;
Calendar.get_daysofmonth = Calendar_get_daysofmonth;
Calendar.calc_month_year = Calendar_calc_month_year;
Calendar.print = Calendar_print;

function Calendar_get_month(monthNo) {
	return Calendar.Months[monthNo];
}

function Calendar_get_daysofmonth(monthNo, p_year) {
	/* 
	Check for leap year ..
	1.Years evenly divisible by four are normally leap years, except for... 
	2.Years also evenly divisible by 100 are not leap years, except for... 
	3.Years also evenly divisible by 400 are leap years. 
	*/
	if ((p_year % 4) == 0) {
		if ((p_year % 100) == 0 && (p_year % 400) != 0)
			return Calendar.DOMonth[monthNo];
	
		return Calendar.lDOMonth[monthNo];
	} else
		return Calendar.DOMonth[monthNo];
}

function Calendar_calc_month_year(p_Month, p_Year, incr) {
	/* 
	Will return an 1-D array with 1st element being the calculated month 
	and second being the calculated year 
	after applying the month increment/decrement as specified by 'incr' parameter.
	'incr' will normally have 1/-1 to navigate thru the months.
	*/
	var ret_arr = new Array();
	
	if (incr == -1) {
		// B A C K W A R D
		if (p_Month == 0) {
			ret_arr[0] = 11;
			ret_arr[1] = parseInt(p_Year) - 1;
		}
		else {
			ret_arr[0] = parseInt(p_Month) - 1;
			ret_arr[1] = parseInt(p_Year);
		}
	} else if (incr == 1) {
		// F O R W A R D
		if (p_Month == 11) {
			ret_arr[0] = 0;
			ret_arr[1] = parseInt(p_Year) + 1;
		}
		else {
			ret_arr[0] = parseInt(p_Month) + 1;
			ret_arr[1] = parseInt(p_Year);
		}
	}
	
	return ret_arr;
}

function Calendar_print() {
	ggWinCal.print();
}

function Calendar_calc_month_year(p_Month, p_Year, incr) {
	/* 
	Will return an 1-D array with 1st element being the calculated month 
	and second being the calculated year 
	after applying the month increment/decrement as specified by 'incr' parameter.
	'incr' will normally have 1/-1 to navigate thru the months.
	*/
	var ret_arr = new Array();
	
	if (incr == -1) {
		// B A C K W A R D
		if (p_Month == 0) {
			ret_arr[0] = 11;
			ret_arr[1] = parseInt(p_Year) - 1;
		}
		else {
			ret_arr[0] = parseInt(p_Month) - 1;
			ret_arr[1] = parseInt(p_Year);
		}
	} else if (incr == 1) {
		// F O R W A R D
		if (p_Month == 11) {
			ret_arr[0] = 0;
			ret_arr[1] = parseInt(p_Year) + 1;
		}
		else {
			ret_arr[0] = parseInt(p_Month) + 1;
			ret_arr[1] = parseInt(p_Year);
		}
	}
	
	return ret_arr;
}

// This is for compatibility with Navigator 3, we have to create and discard one object before the prototype object exists.
new Calendar();

Calendar.prototype.getMonthlyCalendarCode = function() {
	var vCode = "";
	var vHeader_Code = "";
	var vData_Code = "";
	
	// Begin Table Drawing code here..
	vCode = vCode + "<table class=\"bodyDays\">\n";
	
	vHeader_Code = this.cal_header();
	vData_Code = this.cal_data();
	vCode = vCode + vHeader_Code + vData_Code;
	
	vCode = vCode + "</table>";
	
	return vCode;
}

Calendar.prototype.show = function(css, lang) {
	var vCode = "";
	
	this.gWinCal.document.open();

	// Setup the page...
	this.wwrite("<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Strict//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd\">");
	this.wwrite("<html>");
	this.wwrite("<head><title>"+this.translate("Calendar")+"</title>");
	this.wwrite("<meta http-equiv=\"Content-Type\" content=\"text/html; charset=iso-8859-1\" />");
	this.wwrite("<meta name=\"Robots\" content=\"none\" />");
	this.wwrite("<link rel=\"stylesheet\" href=\""+css+"\" type=\"text/css\" />");
	this.wwrite("</head>");

	this.wwrite("<body>");
	
	this.wwrite("<div id=\"box\">");
		
	this.wwriteA("<div class=\"mothDate\">"+this.translate(this.gMonthName) + " " + this.gYear+"</div>\n");

	// Show navigation buttons
	var prevMMYYYY = Calendar.calc_month_year(this.gMonth, this.gYear, -1);
	var prevMM = prevMMYYYY[0];
	var prevYYYY = prevMMYYYY[1];

	var nextMMYYYY = Calendar.calc_month_year(this.gMonth, this.gYear, 1);
	var nextMM = nextMMYYYY[0];
	var nextYYYY = nextMMYYYY[1];
	
	this.wwrite("<table class=\"header\">\n<tr>");
	this.wwrite("<td><a href=\""+"javascript:window.opener.Build("+ 
		"'"+this.gReturnItem+"', '"+this.gMonth+"', '"+(parseInt(this.gYear)-1)+"', '"+this.gFormat+"', '"+css+"', '"+lang+"'"+
		");" +
		"\"><<<\/a></td>");
	this.wwrite("<td><a href=\"" +
		"javascript:window.opener.Build("+ 
		"'" + this.gReturnItem + "', '" + prevMM + "', '" + prevYYYY + "', '" + this.gFormat+"', '"+css+"', '"+lang+"'"+
		");" +
		"\"><<\/a></td>");
	this.wwrite("<td><a href=\"javascript:self.close();\">"+this.translate("Close")+"</a></td>");
	this.wwrite("<td><a href=\"" +
		"javascript:window.opener.Build(" + 
		"'" + this.gReturnItem + "', '" + nextMM + "', '" + nextYYYY + "', '" + this.gFormat+"', '"+css+"', '"+lang+"'"+
		");" +
		"\">><\/a></td>");
	this.wwrite("<td><a href=\"" +
		"javascript:window.opener.Build(" + 
		"'" + this.gReturnItem + "', '" + this.gMonth + "', '" + (parseInt(this.gYear)+1) + "', '" + this.gFormat+"', '"+css+"', '"+lang+"'"+
		");" +
		"\">>><\/a></td>\n</tr>\n</table>");

	// Get the complete calendar code for the month..
	vCode = this.getMonthlyCalendarCode();
	this.wwrite(vCode);

	this.wwrite("</div>\n</body>\n</html>");
	this.gWinCal.document.close();
}

Calendar.prototype.wwrite = function(wtext) {
	this.gWinCal.document.writeln(wtext);
}

Calendar.prototype.wwriteA = function(wtext) {
	this.gWinCal.document.write(wtext);
}

Calendar.prototype.cal_header = function() {
	var vCode = "";
	for(a=0;a<7;a++)
		vCode = vCode+"<td>"+this.translate(Calendar.Days[a])+"</td>"; 
	vCode = "<tr class=\"nameDays\">"+vCode+"</tr>";
	
	return vCode;
}

Calendar.prototype.cal_data = function() {
	var vDate = new Date();
	vDate.setDate(1);
	vDate.setMonth(this.gMonth);
	vDate.setFullYear(this.gYear);

	var vFirstDay=vDate.getDay();
	var vDay=1;
	var vLastDay=Calendar.get_daysofmonth(this.gMonth, this.gYear);
	var vOnLastDay=0;
	var vCode = "";

	/*
	Get day for the 1st of the requested month/year..
	Place as many blank cells before the 1st day of the month as necessary. 
	*/

	vCode = vCode + "<tr>\n";
	for (i=0; i<vFirstDay; i++) {
		vCode = vCode + "<td" + this.write_weekend_string(i) + "> </td>\n";
	}

	// Write rest of the 1st week
	for (j=vFirstDay; j<7; j++) {
		vCode = vCode + "<td" + this.write_weekend_string(j) + ">" + 
			"<a href='#' " + 
				"onClick=\"self.opener.document." + this.gReturnItem + ".value='" + 
				this.format_data(vDay) + 
				"';window.close();\"" + 
				this.format_day(vDay) + 
			"</a></td>\n";
		vDay=vDay + 1;
	}
	vCode = vCode + "</tr>\n";

	// Write the rest of the weeks
	for (k=2; k<7; k++) {
		vCode = vCode + "<tr>\n";

		for (j=0; j<7; j++) {
			vCode = vCode + "<td" + this.write_weekend_string(j) + ">" + 
				"<a href='#' " + 
					"onClick=\"self.opener.document." + this.gReturnItem + ".value='" + 
					this.format_data(vDay) + 
					"';window.close();\"" + 
				this.format_day(vDay) + 
				"</a></td>\n";
			vDay=vDay + 1;

			if (vDay > vLastDay) {
				vOnLastDay = 1;
				break;
			}
		}

		if (j > 5)
			vCode = vCode + "</tr>\n";
		if (vOnLastDay == 1)
			break;
	}
	
	// Fill up the rest of last week with proper blanks, so that we get proper square blocks
	for (m=1; m<(7-j); m++) {
		if (this.gYearly)
			vCode = vCode + "<td" + this.write_weekend_string(j+m) +
			"><span class=\"lastDays\"> </span></td>\n";
		else
			vCode = vCode + "<td" + this.write_weekend_string(j+m) + 
			"><span class=\"lastDays\">" + m + "</span></td>\n";
	}
	if (m>1)
		vCode = vCode + "</tr>\n";
		
	return vCode;
}

Calendar.prototype.format_day = function(vday) {
	var vNowDay = gNow.getDate();
	var vNowMonth = gNow.getMonth();
	var vNowYear = gNow.getFullYear();

	if (vday == vNowDay && this.gMonth == vNowMonth && this.gYear == vNowYear)
		return (" id=\"DayUp\">" + vday);
	else
		return (">" +vday);
}

Calendar.prototype.write_weekend_string = function(vday) {
	var i;

	// Return special formatting for the weekend day.
	for (i=0; i<weekend.length; i++) {
		if (vday == weekend[i])
			return (" id=\"weekend\"");
	}
	
	return "";
}

Calendar.prototype.format_data = function(p_day) {
	var vData;
	var vMonth = 1 + this.gMonth;
	vMonth = (vMonth.toString().length < 2) ? "0" + vMonth : vMonth;
	var vMon = Calendar.get_month(this.gMonth).substr(0,3).toUpperCase();
	var vFMon = Calendar.get_month(this.gMonth).toUpperCase();
	var vY4 = new String(this.gYear);
	var vY2 = new String(this.gYear.substr(2,2));
	var vDD = (p_day.toString().length < 2) ? "0" + p_day : p_day;

	switch (this.gFormat) {
		case "MM\/DD\/YYYY" :
			vData = vMonth + "\/" + vDD + "\/" + vY4;
			break;
		case "MM\/DD\/YY" :
			vData = vMonth + "\/" + vDD + "\/" + vY2;
			break;
		case "MM-DD-YYYY" :
			vData = vMonth + "-" + vDD + "-" + vY4;
			break;
		case "MM-DD-YY" :
			vData = vMonth + "-" + vDD + "-" + vY2;
			break;

		case "DD\/MON\/YYYY" :
			vData = vDD + "\/" + vMon + "\/" + vY4;
			break;
		case "DD\/MON\/YY" :
			vData = vDD + "\/" + vMon + "\/" + vY2;
			break;
		case "DD-MON-YYYY" :
			vData = vDD + "-" + vMon + "-" + vY4;
			break;
		case "DD-MON-YY" :
			vData = vDD + "-" + vMon + "-" + vY2;
			break;

		case "DD\/MONTH\/YYYY" :
			vData = vDD + "\/" + vFMon + "\/" + vY4;
			break;
		case "DD\/MONTH\/YY" :
			vData = vDD + "\/" + vFMon + "\/" + vY2;
			break;
		case "DD-MONTH-YYYY" :
			vData = vDD + "-" + vFMon + "-" + vY4;
			break;
		case "DD-MONTH-YY" :
			vData = vDD + "-" + vFMon + "-" + vY2;
			break;

		case "DD\/MM\/YYYY" :
			vData = vDD + "\/" + vMonth + "\/" + vY4;
			break;
		case "DD\/MM\/YY" :
			vData = vDD + "\/" + vMonth + "\/" + vY2;
			break;
		case "DD-MM-YYYY" :
			vData = vDD + "-" + vMonth + "-" + vY4;
			break;
		case "DD-MM-YY" :
			vData = vDD + "-" + vMonth + "-" + vY2;
			break;

		default :
			vData = vMonth + "\/" + vDD + "\/" + vY4;
	}

	return vData;
}

Calendar.prototype.translate = function(txt) {
	
	if (Calendar.Translations[Calendar.Language]!=undefined) {
		trans=Calendar.Translations[Calendar.Language];
		for(a=0;a<Calendar.Translations["en"].length;a++)
			if (Calendar.Translations["en"][a]==txt){
				txt=Calendar.Translations[Calendar.Language][a];
				break;	
			}
	}
	return txt;
}

function Build(p_item, p_month, p_year, p_format, css, lang) {
	var p_WinCal = ggWinCal;
	gCal = new Calendar(p_item, p_WinCal, p_month, p_year, p_format);
	gCal.show(css, lang);
}

function show_calendar() {
	/* 
		p_month : 0-11 for Jan-Dec; 12 for All Months.
		p_year	: 4-digit year
		p_format: Date format (mm/dd/yyyy, dd/mm/yy, ...)
		p_item	: Return Item.
	*/

	p_item = arguments[0];
	if (arguments[1] == null)
		p_month = new String(gNow.getMonth());
	else
		p_month = arguments[1];
	if (arguments[2] == "" || arguments[2] == null)
		p_year = new String(gNow.getFullYear().toString());
	else
		p_year = arguments[2];
	if (arguments[3] == null)
		p_format = "MM/DD/YYYY";
	else
		p_format = arguments[3];

	css = arguments[4];
	
	if (arguments[5] != null)
		Calendar.Language = arguments[5];
		
	p_format=p_format.toUpperCase();
	
	var up=(screen.height/2)-125, lf=(screen.width/2)-125;
	vWinCal = window.open("", "Calendar", "width=250,height=250,status=no,resizable=no,top="+up+",left="+lf);
	vWinCal.opener = self;
	vWinCal.focus();
	ggWinCal = vWinCal;

	Build(p_item, p_month, p_year, p_format, css, Calendar.Language);
	
}