// 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.html
// 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 lookups = [];

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

var webPath = "";

var NS4 = (navigator.appName.indexOf("Netscape")>=0 && !document.getElementById)? true : false;
var IE4 = (document.all && !document.getElementById)? true : false;
var IE5 = (document.getElementById && document.all)? true : false;
var NS6 = (document.getElementById && navigator.appName.indexOf("Netscape")>=0 )? true: false;
var mx, my;

function moveobj(evt) {
    if (NS4 || NS6) {
    mx=evt.screenX;
    	my=evt.screenY;
    } else if (IE5 || IE4) {
    	mx=event.screenX;
    	my=event.screenY;
    }
}

if(NS4)document.captureEvents(Event.MOUSEMOVE);
document.onmousemove=moveobj;

function call_cal(target, datetime) {   
    var cal3 = new calendar1(target);
    cal3.year_scroll = true;
    cal3.time_comp = true;    
    cal3.popup(datetime);
}

function call_cal_notime(target, datetime) {   
    var cal3 = new calendar1(target);
    cal3.year_scroll = true;
    cal3.time_comp = false;    
    cal3.popup(datetime);
}

function calendar1(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 (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('/images/' +
		'calendar.html?datetime=' + this.dt_current.valueOf()+ '&id=' + this.id,
		'Calendar', 'width=150,height='+(this.time_comp ? 220 : 235)+
		',status=no,resizable=yes,top='+my+',left='+mx+',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.getFullYear() + "-"
        + (dt_datetime.getMonth() < 9 ? '0' : '') + (dt_datetime.getMonth() + 1) + "-"
        + (dt_datetime.getDate() < 10 ? '0' : '') + dt_datetime.getDate()
	);
}
// 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()) + "."
		+ (dt_datetime.getMilliseconds())
	);
}

// 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[2]) return cal_error ("Invalid date format: '" + str_date + "'.\nNo day of month value can be found.");
	if (!RE_NUM.exec(arr_date[2])) return cal_error ("Invalid day of month value: '" + arr_date[2] + "'.\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[0]) return cal_error ("Invalid date format: '" + str_date + "'.\nNo year value can be found.");
	if (!RE_NUM.exec(arr_date[0])) return cal_error ("Invalid year value: '" + arr_date[0] + "'.\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[0] < 100) arr_date[2] = Number(arr_date[0]) + (arr_date[0] < NUM_CENTYEAR ? 2000 : 1900);
	dt_date.setFullYear(arr_date[0]);

	var dt_numdays = new Date(arr_date[0], arr_date[1], 0);
	dt_date.setDate(arr_date[2]);
	if (dt_date.getMonth() != (arr_date[1]-1)) return cal_error ("Invalid day of month value: '" + arr_date[2] + "'.\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.");

    var arr_sec = String(arr_time[2] ? arr_time[2] : '').split('.');
    
	if (!arr_sec[0]) dt_date.setSeconds(0);
	else if (RE_NUM.exec(arr_sec[0]))
		if (arr_sec[0] < 60) dt_date.setSeconds(arr_sec[0]);
		else return cal_error ("Invalid seconds value: '" + arr_sec[0] + "'.\nAllowed range is 00-59.");
	else return cal_error ("Invalid seconds value: '" + arr_sec[0] + "'.\nAllowed values are unsigned integers.");
	
	if (!arr_sec[1]) dt_date.setMilliseconds(0);
	else if (RE_NUM.exec(arr_sec[1]))
	    if (arr_sec[1] < 1000) dt_date.setMilliseconds(arr_sec[1]);
	    else return cal_error ("Invalid milliseconds valus: '" + arr_sec[1] + "'.\nAllowed range is 00-999.");
	else return cal_error ("Invalid milliseconds value: '" + arr_sec[1] + "'.\nAllowed values are unsigned integers.");
	
	return dt_date;
}

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