// Title: Tigra Calendar
// URL: http://www.softcomplex.com/products/tigra_calendar/
// Version: 3.3 (European 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 calendars = [];
var RE_NUM = /^\-?\d+$/;
function calendar1(obj_target) {
	// assigning 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 target 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(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;
	}
	var obj_calwindow = window.open("http://www.nayagarahotels.com/html/calendar.html?datetime=" + this.dt_current.valueOf() + "&id=" + this.id, "Calendar", "width=200,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() < 10 ? "0" : "") + dt_datetime.getDate() + "-" + (dt_datetime.getMonth() < 9 ? "0" : "") + (dt_datetime.getMonth() + 1) + "-" + dt_datetime.getFullYear());
}
// time generating function
function cal_gen_time1(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_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;
}
function cal_popup123(str_datetime, obj_target) {
	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 target 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;
	if (str_datetime) {
		this.dt_current = this.cal_prs_tsmp123(str_datetime);
	} else {
		this.dt_current = this.prs_tsmp(this.target.value);
		this.dt_selected = this.dt_current;
	}
	if (!this.dt_current) {
		return;
	}
	var obj_calwindow = window.open("http://www.nayagarahotels.com/html/calendar.html?datetime=" + this.dt_current.valueOf() + "&id=" + this.id, "Calendar", "width=200,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();
}
function cal_prs_tsmp123(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]));
}


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