// Title: Tigra Calendar
// URL: http://www.softcomplex.com/products/tigra_calendar/
// Version: 3.3 (American date format)
// Date: 09/01/2005 (mm/dd/yyyy)
// Note: Permission given to use this script in ANY kind of applications if
//    header lines are left unchanged.
// Note: Script consists of two files: calendar?.js and calendar.html

// if two digit year input dates after this year considered 20 century.
var NUM_CENTYEAR = 30;
// is time input control required by default
var BUL_TIMECOMPONENT = false;
// are year scrolling buttons required by default
var BUL_YEARSCROLL = true;

var HTML_PATH = '';
var calendars = [];
var RE_NUM = /^\-?\d+$/;

var us_zone = 'us';
var jp_zone = 'jp';

function us_calendar(obj_target, zone, host) {

	// assigning methods
	this.gen_date = cal_gen_date2;
	this.gen_time = cal_gen_time2;
	this.gen_tsmp = cal_gen_tsmp2;
	this.prs_date = cal_prs_date2;
	this.prs_time = cal_prs_time2;
	this.prs_tsmp = cal_prs_tsmp2;
	this.popup    = cal_popup2;
	this.host     = host;

	// validate input parameters
	if (!obj_target)
		return cal_error("Error calling the calendar: no target control specified");
	if (obj_target.value == null)
		return cal_error("Error calling the calendar: parameter specified is not valid target control");
	this.target = obj_target;
	this.time_comp = BUL_TIMECOMPONENT;
	this.year_scroll = BUL_YEARSCROLL;
        this.html_path = HTML_PATH;
        this.zone = zone;

	if (host == "www.fxconverter.com") {
        	this.html_path = "http://www.fxconverter.com" + this.html_path;
        }
	
        if(this.zone == us_zone) {
           this.delim     = '/';
           this.month_pos = 0;
           this.day_pos   = 1;
           this.year_pos   = 2;
           this.date_format = "MM/DD/YY";
        } else if(this.zone == jp_zone) {
           this.delim     = '.';
           this.month_pos = 1;
           this.day_pos   = 2;
           this.year_pos   = 0;
           this.date_format = "YY/MM/DD";
        } else {
           this.delim     = '.';
	   this.month_pos = 1;
	   this.day_pos   = 0;
	   this.year_pos   = 2;
           this.date_format = "DD/MM/YY";
	}

		// register in global collections
		this.id = calendars.length;
		calendars[this.id] = this;
	}

	function cal_popup2 (str_datetime) {

		if (str_datetime) {
			this.dt_current = this.prs_tsmp(str_datetime);
		}
		else {
			this.dt_current = this.prs_tsmp(this.target.value);
			this.dt_selected = this.dt_current;
		}
		if (!this.dt_current) return;

		if (this.host == "www.fxconverter.com") {
                	this.html_path = "http://www.fxconverter.com" + this.html_path;
			this.host = '';
        	}

		var obj_calwindow = window.open(
			this.html_path + '/calendar.html?datetime=' + this.dt_current.valueOf()+ '&id=' + this.id,
			'Calendar', 'width=200,height='+(this.time_comp ? 215 : 190)+
			',status=no,resizable=yes,dependent=yes,alwaysRaised=yes'
		);
		obj_calwindow.opener = window;
		obj_calwindow.focus();
	}

	// timestamp generating function
	function cal_gen_tsmp2 (dt_datetime) {
		return(this.gen_date(dt_datetime) + ' ' + this.gen_time(dt_datetime));
	}

	// date generating function
	function cal_gen_date2 (dt_datetime) {
	   if(this.zone == us_zone) {
	      return (
		 (dt_datetime.getMonth() < 9 ? '0' : '') 
		 + (dt_datetime.getMonth() + 1) 
		 + this.delim
		 + (dt_datetime.getDate() < 10 ? '0' : '')
		 + dt_datetime.getDate() 
		 + this.delim 
		 + dt_datetime.getFullYear()
	      );
	   } 

	   else if (this.zone == jp_zone) {
      return (
         dt_datetime.getFullYear()
         + this.delim
         + (dt_datetime.getMonth() < 9 ? '0' : '') 
         + (dt_datetime.getMonth() + 1) 
         + this.delim
         + (dt_datetime.getDate() < 10 ? '0' : '')
         + dt_datetime.getDate() 
      );
   }

   else {
      return (
         (dt_datetime.getDate() < 10 ? '0' : '')
         + dt_datetime.getDate() 
         + this.delim
         + (dt_datetime.getMonth() < 9 ? '0' : '') 
         + (dt_datetime.getMonth() + 1) 
         + this.delim 
         + dt_datetime.getFullYear()
      );
   }
}
// time generating function
function cal_gen_time2 (dt_datetime) {
	return (
		(dt_datetime.getHours() < 10 ? '0' : '') + dt_datetime.getHours() + ":"
		+ (dt_datetime.getMinutes() < 10 ? '0' : '') + (dt_datetime.getMinutes()) + ":"
		+ (dt_datetime.getSeconds() < 10 ? '0' : '') + (dt_datetime.getSeconds())
	);
}

// timestamp parsing function
function cal_prs_tsmp2 (str_datetime) {
	// if no parameter specified return current timestamp
	if (!str_datetime)
		return (new Date());

	// if positive integer treat as milliseconds from epoch
	if (RE_NUM.exec(str_datetime))
		return new Date(str_datetime);
		
	// else treat as date in string format
	var arr_datetime = str_datetime.split(' ');
	return this.prs_time(arr_datetime[1], this.prs_date(arr_datetime[0]));
}

// date parsing function
function cal_prs_date2 (str_date) {
        var arr_date  = str_date.split(/\/|\./);

	if (arr_date.length != 3) {
           return alert ("Invalid date format: '" + 
                         str_date + 
                         "'.\nFormat accepted is " + this.date_format);
        }

	if (!arr_date[this.day_pos]) {
            return alert ("Invalid date format: '" 
                          + str_date 
                          + "'.\nNo day of month value can be found.");
        }

	if (!RE_NUM.exec(arr_date[this.day_pos])) {
           return alert ("Invalid day of month value: '" 
                         + arr_date[this.day_pos] 
                         + "'.\nAllowed values are unsigned integers.");
        }

	if (!arr_date[this.month_pos]) {
           return alert ("Invalid date format: '" 
                         + str_date
                         + "'.\nNo month value can be found.");
        }

	if (!RE_NUM.exec(arr_date[this.month_pos])) {
           return alert ("Invalid month value: '"  
                         + arr_date[this.month_pos] 
                         + "'.\nAllowed values are unsigned integers.");
        }

	if (!arr_date[this.year_pos]) {
           return alert ("Invalid date format: '" 
                         + str_date
                         + "'.\nNo year value can be found.");
        }

	if (!RE_NUM.exec(arr_date[this.year_pos])) {
           return alert ("Invalid year value: '" 
                         + arr_date[this.year_pos]  
                         + "'.\nAllowed values are unsigned integers.");
        }

	var dt_date = new Date();
	dt_date.setDate(1);

	if (arr_date[this.month_pos] < 1 || arr_date[this.month_pos] > 12) return alert ("Invalid month value: '" + arr_date[this.month_pos] + "'.\nAllowed range is 01-12.");
	dt_date.setMonth(arr_date[this.month_pos]-1);
	 
	if (arr_date[this.year_pos] < 100) arr_date[this.year_pos] = Number(arr_date[this.year_pos]) + (arr_date[this.year_pos] < NUM_CENTYEAR ? 2000 : 1900);
	dt_date.setFullYear(arr_date[this.year_pos]);

	var dt_numdays = new Date(arr_date[this.year_pos], arr_date[this.month_pos], 0);
	dt_date.setDate(arr_date[this.day_pos]);
	if (dt_date.getMonth() != (arr_date[this.month_pos]-1)) return alert ("Invalid day of month value: '" + arr_date[this.day_pos] + "'.\nAllowed range is 01-"+dt_numdays.getDate()+".");

	return (dt_date)
}

// time parsing function
function cal_prs_time2 (str_time, dt_date) {

	if (!dt_date) return null;
	var arr_time = String(str_time ? str_time : '').split(':');

	if (!arr_time[0]) dt_date.setHours(0);
	else if (RE_NUM.exec(arr_time[0])) 
		if (arr_time[0] < 24) dt_date.setHours(arr_time[0]);
		else return cal_error ("Invalid hours value: '" + arr_time[0] + "'.\nAllowed range is 00-23.");
	else return cal_error ("Invalid hours value: '" + arr_time[0] + "'.\nAllowed values are unsigned integers.");
	
	if (!arr_time[1]) dt_date.setMinutes(0);
	else if (RE_NUM.exec(arr_time[1]))
		if (arr_time[1] < 60) dt_date.setMinutes(arr_time[1]);
		else return cal_error ("Invalid minutes value: '" + arr_time[1] + "'.\nAllowed range is 00-59.");
	else return cal_error ("Invalid minutes value: '" + arr_time[1] + "'.\nAllowed values are unsigned integers.");

	if (!arr_time[2]) dt_date.setSeconds(0);
	else if (RE_NUM.exec(arr_time[2]))
		if (arr_time[2] < 60) dt_date.setSeconds(arr_time[2]);
		else return cal_error ("Invalid seconds value: '" + arr_time[2] + "'.\nAllowed range is 00-59.");
	else return cal_error ("Invalid seconds value: '" + arr_time[2] + "'.\nAllowed values are unsigned integers.");

	dt_date.setMilliseconds(0);
	return dt_date;
}

function cal_error (str_message) {
	alert (str_message);
	return null;
}