// Title: Tigra Calendar
// URL: http://www.softcomplex.com/products/tigra_calendar/
// Version: 3.4 (American date format)
// Date: 07/12/2007
// 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+$/;
var obj_calwindow;

function calendar2(obj_target) {

	// 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;

	// 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_popup2 (str_datetime) {
	var path;
	if (str_datetime) {
		this.dt_current = this.prs_tsmp(str_datetime);
		path = './calendar.html';
	} else {
		this.dt_selected = this.dt_current = this.prs_tsmp(this.target.value);
		path = './fid/calendar/calendar.html';
	}
	if (!this.dt_current) return;

/*	var obj_calwindow = window.showModalDialog(
		path + '?id=' + this.id + '&s=' + this.dt_selected.valueOf() + '&c=' + this.dt_current.valueOf(),'',
		'dialogHeight:245px;dialogWidth:200px;');
	); */
	
	var calendarwidth = 200;
	var calendarheight = (this.time_comp ? 245 : 220);
	var x = (window.screen.width - calendarwidth)/2;
	var y = (window.screen.height - calendarheight)/2;
	if (!x>0) x = 200;
	if (!y>0) y = 200;
	
	obj_calwindow = window.open(
		path + '?id=' + this.id + '&s=' + this.dt_selected.valueOf() + '&c=' +
		this.dt_current.valueOf(),'Calendar', 'width=' + calendarwidth + ',height=' + calendarheight +
		',status=no,resizable=yes,top=' + y + ',left=' + x + ',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) {
	return (
		(dt_datetime.getMonth() < 9 ? '0' : '') + (dt_datetime.getMonth() + 1) + "/"
		+ (dt_datetime.getDate() < 10 ? '0' : '') + dt_datetime.getDate() + "/"
		+ 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 (typeof str_datetime == "string") {

		if (str_datetime.length > 0) {

			// New code added to fix bug 2518
			var pos_slash1 = str_datetime.toString().indexOf('/');
			var pos_slash2 = str_datetime.toString().lastIndexOf('/');
			
			if (pos_slash1 == -1 || pos_slash2 == -1 || pos_slash1 == pos_slash2 || str_datetime.length != 10) {
				alert (str_datetime + " is not a valid date in MM/DD/YYYY format.  Calendar will display with the current date selected.");
				return (new Date());
			}
		}
	}

	// 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) {

// Modified by jwen to display the invalid date message and set the calendar to the current date when an invalid date is passed

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

/*	Original Code
	if (arr_date.length != 3) return alert ("Invalid date format: '" + str_date + "'.\nFormat accepted is dd-mm-yyyy.");
	if (!arr_date[1]) return alert ("Invalid date format: '" + str_date + "'.\nNo day of month value can be found.");
	if (!RE_NUM.exec(arr_date[1])) return alert ("Invalid day of month value: '" + arr_date[1] + "'.\nAllowed values are unsigned integers.");
	if (!arr_date[0]) return alert ("Invalid date format: '" + str_date + "'.\nNo month value can be found.");
	if (!RE_NUM.exec(arr_date[0])) return alert ("Invalid month value: '" + arr_date[0] + "'.\nAllowed values are unsigned integers.");
	if (!arr_date[2]) return alert ("Invalid date format: '" + str_date + "'.\nNo year value can be found.");
	if (!RE_NUM.exec(arr_date[2])) return alert ("Invalid year value: '" + arr_date[2] + "'.\nAllowed values are unsigned integers.");
*/

//	New Code
	if (arr_date.length != 3 || !arr_date[1] || !RE_NUM.exec(arr_date[1]) || !arr_date[0] || !RE_NUM.exec(arr_date[0]) || !arr_date[2] || !RE_NUM.exec(arr_date[2])) {
		alert (str_date + " is not a valid date in MM/DD/YYYY format.  Calendar will display with the current date selected.");
		return (new Date());
	}

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

//	Original Code
//	if (arr_date[0] < 1 || arr_date[0] > 12) return alert ("Invalid month value: '" + arr_date[0] + "'.\nAllowed range is 01-12.");

//	New Code
	if (arr_date[0] < 1 || arr_date[0] > 12) {
		alert (str_date + " is not a valid date in MM/DD/YYYY format.  Calendar will display with the current date selected.");
		return (new Date());
	}
	
	dt_date.setMonth(arr_date[0]-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[0], 0);
	dt_date.setDate(arr_date[1]);

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

//	New Code
	if (dt_date.getMonth() != (arr_date[0]-1)) {
		alert (str_date + " is not a valid date in MM/DD/YYYY format.  Calendar will display with the current date selected.");
		return (new Date());
	}

	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;
}

function cal_disable (id, disabled) {
	
	if (document.getElementById(id) != null) {
	
		var childs=document.getElementById(id).childNodes;
	
		for (i=0; i<childs.length; i++){
			var obj=childs[i];
			if (obj.nodeName=="A") {
				var aTag=obj;
			}
			if (obj.nodeName=="IMG") {
				var imgTag=obj;
			}
		}
		
		if (disabled) {
			aTag.style.display='none';
			imgTag.style.display='';
		}
		else
		{
			aTag.style.display='';
			imgTag.style.display='none';
		}
	}
	return null;
}