// Title: Tigra Calendar
// URL: http://www.softcomplex.com/products/tigra_calendar/
// Version: 3.2 (European date format)
// Date: 10/14/2002 (mm/dd/yyyy)
// Feedback: feedback@softcomplex.com (specify product title in the subject)
// 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.php
// About us: Our company provides offshore IT consulting services.
//    Contact us at sales@softcomplex.com if you have any programming task you
//    want to be handled by professionals. Our typical hourly rate is $20.

// 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 calendars = [];

var RE_NUM = /^\-?\d+$/;

function calendar(obj_target) {
	// assing methods
	this.gen_date = cal_gen_date1;
	this.gen_time = cal_gen_time1;
	this.gen_tsmp = cal_gen_tsmp1;
	this.prs_date = cal_prs_date1;
	this.prs_time = cal_prs_time1;
	this.prs_tsmp = cal_prs_tsmp1;
	this.popup    = cal_popup1;

	// 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 tardet control");

	this.target = obj_target;

	this.time_comp = BUL_TIMECOMPONENT;

	this.year_scroll = BUL_YEARSCROLL;

	

	// register in global collections

	this.id = calendars.length;

	calendars[this.id] = this;

}

function cal_popup1(folder, lang, str_datetime) {
	this.dt_current = this.prs_tsmp(str_datetime ? str_datetime : this.target.value);

	if(!this.dt_current)
		return;

	var obj_calwindow = window.open(
		folder + '/calendar.php?lang=' + lang + '&datetime=' + this.dt_current.valueOf()+ '&id=' + this.id,
		'Calendar', 'width=220,height='+(this.time_comp ? 215 : 190) + ',status=no,resizable=no,top=200,left=200,dependent=yes,alwaysRaised=yes'
	);

	obj_calwindow.opener = window;

	obj_calwindow.focus();
}

// timestamp generating function

function cal_gen_tsmp1 (dt_datetime) {

	return(this.gen_date(dt_datetime) + ' ' + this.gen_time(dt_datetime));

}



// date generating function

function cal_gen_date1 (dt_datetime) {

	return (

		dt_datetime.getDate() + "."

		+ (dt_datetime.getMonth() + 1) + "."

		+ dt_datetime.getFullYear()

	);

}

// time generating function

function cal_gen_time1 (dt_datetime) {

	return (

		(dt_datetime.getHours() + ":"

		+ (dt_datetime.getMinutes()) + ":"

		+ (dt_datetime.getSeconds()))

	);

}



// timestamp parsing function

function cal_prs_tsmp1 (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_date1 (str_date) {



	var arr_date = str_date.split('.');



	if (arr_date.length != 3) return cal_error ("Invalid date format: '" + str_date + "'.\nFormat accepted is dd-mm-yyyy.");

	if (!arr_date[0]) return cal_error ("Invalid date format: '" + str_date + "'.\nNo day of month value can be found.");

	if (!RE_NUM.exec(arr_date[0])) return cal_error ("Invalid day of month value: '" + arr_date[0] + "'.\nAllowed values are unsigned integers.");

	if (!arr_date[1]) return cal_error ("Invalid date format: '" + str_date + "'.\nNo month value can be found.");

	if (!RE_NUM.exec(arr_date[1])) return cal_error ("Invalid month value: '" + arr_date[1] + "'.\nAllowed values are unsigned integers.");

	if (!arr_date[2]) return cal_error ("Invalid date format: '" + str_date + "'.\nNo year value can be found.");

	if (!RE_NUM.exec(arr_date[2])) return cal_error ("Invalid year value: '" + arr_date[2] + "'.\nAllowed values are unsigned integers.");



	var dt_date = new Date();

	dt_date.setDate(1);



	if (arr_date[1] < 1 || arr_date[1] > 12) return cal_error ("Invalid month value: '" + arr_date[1] + "'.\nAllowed range is 01-12.");

	dt_date.setMonth(arr_date[1]-1);

	 

	if (arr_date[2] < 100) arr_date[2] = Number(arr_date[2]) + (arr_date[2] < NUM_CENTYEAR ? 2000 : 1900);

	dt_date.setFullYear(arr_date[2]);



	var dt_numdays = new Date(arr_date[2], arr_date[1], 0);

	dt_date.setDate(arr_date[0]);

	if (dt_date.getMonth() != (arr_date[1]-1)) return cal_error ("Invalid day of month value: '" + arr_date[0] + "'.\nAllowed range is 01-"+dt_numdays.getDate()+".");



	return (dt_date)

}



// time parsing function

function cal_prs_time1 (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;

}