var weekend = [5,6];
var weekendColor = "#e0e0e0";
var fontface = "Arial";
var fontsize = 1;
var script_winclose = "window.close();";

var gNow = new Date();
var ggWinCal;
isNav = (navigator.appName.indexOf("Netscape") != -1) ? true : false;
isIE = (navigator.appName.indexOf("Microsoft") != -1) ? true : false;

var vWinCal
var MinValideDate

Calendar.Months = ["Январь", "Февраль", "Март", "Апрель", "Май", "Июнь",
"Июль", "Август", "Сентябрь", "Октябрь", "Ноябрь", "Декабрь"];

// 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;
		this.gYearly = true;
	} else {
		this.gMonthName = Calendar.get_month(p_month);
		this.gMonth = new Number(p_month);
		this.gYearly = false;
	}

	this.gYear = p_year;
	this.gFormat = p_format;
	this.gBGColor = "red";
	this.gFGColor = "black";
	this.gTextColor = "black";
	this.gHeaderColor = "black";
	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 border=0 cellspacing=1 cellpadding=3 align=center style='background-color:" + this.gBGColor + "'>";
	
	vHeader_Code = this.cal_header();
	vData_Code = this.cal_data();
	vCode = vCode + vHeader_Code + vData_Code + 
        "<tr><td style=\"height:5px\" colspan=\"7\" ></td></tr>";
	
	vCode = vCode + "</table>";
	
	return vCode;
}

Calendar.prototype.show = function() {
	var vCode = "";
    script_winclose = "";

	this.gWinCal.document.open();

	// Setup the page...
	this.wwrite("<html>");
	this.wwrite("<head><title>Выбор даты</title>");
    this.wwrite("<meta http-equiv=\"content-type\" content=\"text/html; charset=windows-1251\">");
	this.wwrite("<link rel=\"stylesheet\" href=\"style/sitecolors.css\" type=\"text/css\">");
	this.wwrite("</head>");
	this.wwrite("<body " + 
		"link=\"" + this.gLinkColor + "\" " + 
		"vlink=\"" + this.gLinkColor + "\" " +
		"alink=\"" + this.gLinkColor + "\" " +
		"text=\"" + this.gTextColor + "\">");
/*	this.wwriteA("<font FACE='" + fontface + "' SIZE=1>");
/*	
    this.wwriteA("<b>" + this.gMonthName + " " + this.gYear);
	this.wwriteA("</b><BR>");
*/
                                          
	// 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];
    
    /*
        по именам календарей из сайта позволяем заносить одну или несколько дат через точку с запятой
    */
    this.wwrite("<script language=\"javascript\" > \n" +
        "function cal_data_onclick(obj, DateText) {\n" +                      
        "    if ((self.opener.document." + this.gReturnItem + ".name == 'ComingOutMoscow') || \n" + 
        "        (self.opener.document." + this.gReturnItem + ".name == 'ComingOutRegions') || \n" +
        "        (self.opener.document." + this.gReturnItem + ".name == 'ComingOutTBG') || \n" +
        "        (self.opener.document." + this.gReturnItem + ".name == 'ComingOutUkraine') " +
        "       ) { \n" +
        "        self.opener.document." + this.gReturnItem + ".value = self.opener.document." + this.gReturnItem + ".value + DateText + '; '" +
        "    } else { " + 
        "        self.opener.document." + this.gReturnItem + ".value = DateText; \n" + 
        "    } " +
		"   /*obj.style.backgroundColor = \"#337\"*/ " + 
        "} " + 
        "</script>");
        
        
    /*
        по именам календарей из сайта выставляем минимальную доступную дату
        - для вылета - сегодня
        - для выхода - завтра
        - для остальных - любая даты
    */
    var today;
    today = new Date();
    // вылет
    if(this.gReturnItem.search('Date_out$') != -1){
        MinValideDate = new Date(today.getFullYear(), today.getMonth(), today.getDate(), 0, 0, 0);
    } else if((this.gReturnItem.search('ComingOutMoscow') != -1) ||
       (this.gReturnItem.search('ComingOutRegions') != -1) ||
       (this.gReturnItem.search('ComingOutTBG') != -1)){
        MinValideDate = new Date(today.getFullYear(), today.getMonth(), today.getDate() + 1, 0, 0, 0);
    } else {
        MinValideDate = new Date(1970, 1, 1, 0, 0, 0);
    }

	this.wwrite("<table width='100%' border=0 cellspacing=0 cellpadding=0 style='background-color:#FFF'><tr>");

	this.wwrite("<td style='height:20px;padding:10px' ALIGN=center><a class='nvgtr' href=\"" +
        "javascript:window.opener.Build(" + 
        "'" + this.gReturnItem + "', '" + prevMM + "', '" + prevYYYY + "', '" + this.gFormat + "'" +
        ");" +
        "\"><<<\/a><b> " + this.gMonthName + "</b>");
    this.wwrite("<a class='nvgtr' href=\"" +
        "javascript:window.opener.Build(" + 
        "'" + this.gReturnItem + "', '" + nextMM + "', '" + nextYYYY + "', '" + this.gFormat + "'" +
        ");" +
        "\">>><\/a></td>");

	//this.wwrite("[<a href=\"javascript:window.print();\">Print</a>]</td><td ALIGN=center>");

	
   /*  это год с кнопками +1 и -1 год
	this.wwrite("<td class='menuadv' style='height:20px;padding:0px' ALIGN=center><a class='nvgtr' href=\"" +
        "javascript:window.opener.Build(" + 
        "'" + this.gReturnItem + "', '" + this.gMonth + "', '" + (parseInt(this.gYear)-1) + "', '" + this.gFormat + "'" +
        ");" +
        "\"><<<\/a><b> " + this.gYear + "</b>");
	this.wwrite("<a class='nvgtr' href=\"" +
		"javascript:window.opener.Build(" + 
		"'" + this.gReturnItem + "', '" + this.gMonth + "', '" + (parseInt(this.gYear)+1) + "', '" + this.gFormat + "'" +
		");" +
		"\">>><\/a></td></tr></table>");
    */
	this.wwrite("<td style='height:20px;padding:0px 10px 0px 0px;' ALIGN=center><b>" + this.gYear + "г.</b></td></tr></table>");


	// Get the complete calendar code for the month..
	vCode = this.getMonthlyCalendarCode();
	this.wwrite(vCode);
    
	this.wwrite("<table width='100%' border=0 cellspacing=0 cellpadding=0 style='background-color:#FFF'><tr>");
/*
	this.wwrite("<td class='menuadv' style='height:20px;padding:0px' ALIGN=center><a class='nvgtr' href=\"" +
        "javascript:window.close();\"><B>закрыть</b><\/a></td></tr></table>");
*/    
	this.wwrite("<td style='height:30px;padding:5px 0px 5px 0px;' ALIGN=center class='greenbtn' >" +
		"<input name='Submit' type='button' value='Закрыть' onclick='javascript:window.close();' />" +
        "</td></tr></table>");


    this.wwrite("</body></html>");
	//this.wwrite("</font></body></html>");
	this.gWinCal.document.close();
}

Calendar.prototype.showY = function() {
	var vCode = "";
	var i;
	var vr, vc, vx, vy;		// Row, Column, X-coord, Y-coord
	var vxf = 285;			// X-Factor
	var vyf = 200;			// Y-Factor
	var vxm = 10;			// X-margin
	var vym;				// Y-margin
	if (isIE)	vym = 75;
	else if (isNav)	vym = 25;
	
	this.gWinCal.document.open();

	this.wwrite("<html>");
	this.wwrite("<head><title>Calendar</title>");
	this.wwrite("<style type='text/css'>\n<!--");
	for (i=0; i<12; i++) {
		vc = i % 3;
		if (i>=0 && i<= 2)	vr = 0;
		if (i>=3 && i<= 5)	vr = 1;
		if (i>=6 && i<= 8)	vr = 2;
		if (i>=9 && i<= 11)	vr = 3;
		
		vx = parseInt(vxf * vc) + vxm;
		vy = parseInt(vyf * vr) + vym;

		this.wwrite(".lclass" + i + " {position:absolute;top:" + vy + ";left:" + vx + ";}");
	}
	this.wwrite("-->\n</style>");
	this.wwrite("</head>");

	this.wwrite("<body " + 
		"link=\"" + this.gLinkColor + "\" " + 
		"vlink=\"" + this.gLinkColor + "\" " +
		"alink=\"" + this.gLinkColor + "\" " +
		"text=\"" + this.gTextColor + "\">");
	this.wwrite("<font FACE='" + fontface + "' SIZE=1><b>");
	this.wwrite("Year : " + this.gYear);
	this.wwrite("</b><BR>");

	// Show navigation buttons
	var prevYYYY = parseInt(this.gYear) - 1;
	var nextYYYY = parseInt(this.gYear) + 1;

	this.wwrite("<table width='100%' border=0 cellspacing=0 cellpadding=0 style='background-color:#FFF;'><tr><td ALIGN=center>");
	this.wwrite("[<a href=\"" +
		"javascript:window.opener.Build(" + 
		"'" + this.gReturnItem + "', null, '" + prevYYYY + "', '" + this.gFormat + "'" +
		");" +
		"\" alt='Prev Year'><<<\/a>]</td><td ALIGN=center>");
	this.wwrite("[<a href=\"javascript:window.print();\">Print</a>]</td><td ALIGN=center>");
	this.wwrite("[<a href=\"" +
		"javascript:window.opener.Build(" + 
		"'" + this.gReturnItem + "', null, '" + nextYYYY + "', '" + this.gFormat + "'" +
		");" +
		"\">>><\/a>]</td></tr></table><BR>");

	// Get the complete calendar code for each month..
	var j;
	for (i=11; i>=0; i--) {
		if (isIE)
			this.wwrite("<div ID=\"layer" + i + "\" CLASS=\"lclass" + i + "\">");
		else if (isNav)
			this.wwrite("<layer ID=\"layer" + i + "\" CLASS=\"lclass" + i + "\">");

		this.gMonth = i;
		this.gMonthName = Calendar.get_month(this.gMonth);
		vCode = this.getMonthlyCalendarCode();
		this.wwrite(this.gMonthName + "/" + this.gYear + "<BR>");
		this.wwrite(vCode);

		if (isIE)                                                  
			this.wwrite("</div>");
		else if (isNav)
			this.wwrite("</layer>");
	}

	this.wwrite("</font><BR></body></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 = "";

    vCode += "<tr>";
    vCode += "<td class=\"clndrweeknametd\">Пн</td>";
    vCode += "<td class=\"clndrweeknametd\">Вт</b></font></td>";
    vCode += "<td class=\"clndrweeknametd\">Ср</b></font></td>";
    vCode += "<td class=\"clndrweeknametd\">Чт</b></font></td>";
    vCode += "<td class=\"clndrweeknametd\">Пт</b></font></td>";
    vCode += "<td class=\"clndrweeknametd\">Сб</b></font></td>";
    vCode += "<td class=\"clndrweeknametd\">Вс</b></font></td>";
    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();
    if (vFirstDay==0) {
		vFirstDay = 6;
	} else {
		vFirstDay = vFirstDay - 1;
	}
		
    var vDay=1;
    var vLastDay=Calendar.get_daysofmonth(this.gMonth, this.gYear);
    var vOnLastDay=0;
    var vCode = "";

    /*
        пустые дни предыдущего месяца первой недели  
    */
    vCode = vCode + "<tr>";
    for (i=0; i<vFirstDay; i++) {
        vCode = vCode + "<td class=\"clndrweekdaystd\" " + this.write_weekend_string(i) + "></td>\n";
    }

    /*
        остаток дней первой недели
    */
    var dd
    for (j=vFirstDay; j<7; j++) {
        dd = new Date(this.gYear, this.gMonth, vDay, 0, 0, 0);
        
        if (dd >= MinValideDate) {
            vCode = vCode + "<td class=\"clndrweekdaystd\" id=\"d1" + j + "\"" + this.write_weekend_string(j) + " onclick='cal_data_onclick(this, \"" + this.format_data(vDay) + "\")'>" +
			    "<a href='#' >" +
                this.format_day(vDay) + 
			    "</a></td>\n";
        } else {
            vCode = vCode + "<td class=\"clndrweekdaystd\" " + this.write_weekend_string(j) + ">" +
			    "<a href='#' >" +
                this.format_day(vDay) + 
                "</a></td>\n";
        }

        vDay=vDay + 1;
    }
    vCode = vCode + "</tr>";

    // остальные недели
    for (k=2; k<7; k++) {
        vCode = vCode + "<tr>";

        for (j=0; j<7; j++) {
            dd = new Date(this.gYear, this.gMonth, vDay, 0, 0, 0);
        
            if (dd >= MinValideDate) {
                vCode = vCode + "<td class=\"clndrweekdaystd\"  id=\"d" + k + "" + j + "\"" + this.write_weekend_string(j) + " onclick='cal_data_onclick(this, \"" + this.format_data(vDay) + "\")'>" +
					"<a href='#' >" +
                    this.format_day(vDay) + 
                    "</a></td>\n";
            } else {
                vCode = vCode + "<td class=\"clndrweekdaystd\" " + this.write_weekend_string(j) + ">" +
					"<a href='#' >" +
                    this.format_day(vDay) + 
                    "</a></td>\n";
            }
            vDay=vDay + 1;

            if (vDay > vLastDay) {
                vOnLastDay = 1;
                break;
            }
        }

		if (j == 6)
            vCode = vCode + "</tr>";

        if (vOnLastDay == 1)
			break;

    }
    


    // остаток последней недели
    for (m=1; m<(7-j); m++) {
        vCode = vCode + "<td class=\"clndrweekdaystd\" " + this.write_weekend_string(j+m) + "></td>";
    }
    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 ("<font color=\"RED\"><b>" + vday + "</b></font>");
	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 (" style=\"background-color:#E9F2EC\" ");
        
			//return (" BGCOLOR=\"" + weekendColor + "\"");
	}
	
	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;
        case "DD.MM.YYYY" :
            vData = vDD + "." + vMonth + "." + vY4;
            break;

		default :
			vData = vMonth + "\/" + vDD + "\/" + vY4;
	}

	return vData;
}

function Build(p_item, p_month, p_year, p_format) {
/*
    var today, todayM, todayY, selDate;
    today = new Date();
    todayM = today.getMonth();
    todayY = today.getYear();
    today = new Date(todayY, todayM, 1);
    selDate = new Date(p_year, p_month, 1);
    if (selDate < today) {
        alert("not good");
    }
*/
	var p_WinCal = ggWinCal;
	gCal = new Calendar(p_item, p_WinCal, p_month, p_year, p_format);

	// Customize your Calendar here..
	gCal.gBGColor=document.bkcolor;
	gCal.gLinkColor="black";
	gCal.gTextColor="black";
	gCal.gHeaderColor="darkgreen";

	// Choose appropriate show function
	if (gCal.gYearly)	gCal.showY();
	else	gCal.show();
}

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 = "YYYY-MM-DD";
		p_format = "DD.MM.YYYY";                       
	else
		p_format = arguments[3];

    if (!vWinCal || vWinCal.closed) {
        vWinCal = window.open("", "Calendar", "width=250,height=280,status=no,resizable=no,top=200,left=200");
        //vWinCal = window.open("http://www.tourdom.ru/birga/go2/login.php", "Calendar", "width=250,height=280,status=no,resizable=no,top=200,left=200");
        //vWinCal = window.open("about:blank", null, "width=250,height=280,status=no,resizable=no,top=200,left=200");
    } else {
        vWinCal.focus();
    }

        

	vWinCal.opener = self;
	ggWinCal = vWinCal;

	Build(p_item, p_month, p_year, p_format);
}
/*
Yearly Calendar Code Starts here
*/
function show_yearly_calendar(p_item, p_year, p_format) {
	// Load the defaults..
	if (p_year == null || p_year == "")
		p_year = new String(gNow.getFullYear().toString());
	if (p_format == null || p_format == "")
		p_format = "MM/DD/YYYY";

	var vWinCal = window.open("", "Calendar", "scrollbars=yes");
	vWinCal.opener = self;
	ggWinCal = vWinCal;

	Build(p_item, null, p_year, p_format);
}
