// Title: Timestamp picker
// Description: See the demo at url
// URL: http://us.geocities.com/tspicker/
// Script featured on: http://javascriptkit.com/script/script2/timestamp.shtml
// Version: 1.0
// Date: 12-05-2001 (mm-dd-yyyy)
// Author: Denis Gritcyuk <denis@softcomplex.com>; <tspicker@yahoo.com>
// Notes: Permission given to use this script in any kind of applications if
//    header lines are left unchanged. Feel free to contact the author
//    for feature requests and/or donations

//Modified by UP
//2003-04-02

var sMsgAlertInvalidDate = new String("");

function show_calendar(str_target, str_datetime, sLang, bSetDate) {
	
	//Konfiguration
	
	//Background Colors
	sColor_Background = "#330000"
	sColor_Background_Cal = "#330000"
	sColor_Background_TitlebarWeekdays = "#EAE5E5"
	
	sColor_Background_Weekdays = "#FFFFFF"
	sColor_Background_Weekend= "#AD9999"
	sColor_Background_ActiveDay = "#AD0000"
	
	sColor_Background_Footer = "#666633"
	
	//Font colors
	sColor_Font_Title = "#FFFFFF"
	sColor_Font_Active_Month = "#666633"
	sColor_Font_Other_Months = "#CCCCCC"
	sColor_Font_Today = "#FFFFFF"
	
	//Font type	
	sFonttype = "tahoma, verdana"
	
	//Image Path
	sImagePath = "/img/"
	
	switch (sLang) {
		case "en" :
	
		   var arr_months = ["January", "February", "March", "April", "May", "June",
					"July", "August", "September", "October", "November", "December"];
				var week_days = ["Su", "Mo", "Tu", "We", "Th", "Fr", "Sa"];
				sMsgAlertInvalidDate = "Not a valid date";
				break;
		case "it" :
		    var arr_months = ["Gennaio", "Febbraio", "Marzo", "Aprile", "Maggio", "Giugno",
					"Luglio", "Agosto", "Settembre", "Ottobre", "Novembre", "Dicembre"];
				var week_days = ["Do", "Lu", "Ma", "Me", "Gi", "Ve", "Sa"];
				sMsgAlertInvalidDate = "Data non valida";
				break;
		default :
		    var arr_months = ["Januar", "Februar", "März", "April", "Mai", "Juni",
					"Juli", "August", "September", "Oktober", "November", "Dezember"];
				var week_days = ["So", "Mo", "Di", "Mi", "Do", "Fr", "Sa"];
				sMsgAlertInvalidDate = "Ungültiges Datum";
				break;
	}
	
	
	
		
	var n_weekstart = 1; // day week starts from (normally 0 or 1)

	var dt_datetime = (str_datetime == null || str_datetime =="" ?  new Date() : str2dt(str_datetime));
	
	//alert(dt_datetime + " = ALERT OBEN");
	
	var dt_prev_month = new Date(dt_datetime);
	dt_prev_month.setMonth(dt_datetime.getMonth()-1);
	var dt_next_month = new Date(dt_datetime);
	dt_next_month.setMonth(dt_datetime.getMonth()+1);
	var dt_firstday = new Date(dt_datetime);
	dt_firstday.setDate(1);
	dt_firstday.setDate(1-(7+dt_firstday.getDay()-n_weekstart)%7);
	var dt_lastday = new Date(dt_next_month);
	dt_lastday.setDate(0);
	
	// html generation (feel free to tune it for your particular application)
	// print calendar header
	
	var str_buffer = new String (
		"<html>\n"+
		"<head>\n"+
		"	<title>Calendar</title>\n"+
		"</head>\n"+
		"<body leftmargin=\"0\" topmargin=\"0\" marginwidth=\"0\" marginheight=\"0\" bgcolor=\"" + sColor_Background + "\" onLoad='JavaScript:self.focus();'>\n"+
		"<table class=\"clsOTable\" cellspacing=\"0\" border=\"0\" width=\"100%\">\n"+
		"<tr><td bgcolor=\"" + sColor_Background_Cal + "\">\n"+
		"<table cellspacing=\"1\" cellpadding=\"3\" border=\"0\" width=\"100%\">\n"+
		"<tr>\n	<td bgcolor=\"" + sColor_Background_Cal + "\"><a href=\"javascript:window.opener.show_calendar('"+
		str_target+"', '"+ dt2dtstr(dt_prev_month)+"', '" + sLang+ "'," + bSetDate +");\">"+
		"<img src=\"" + sImagePath + "calendar_prev.gif\" width=\"16\" height=\"16\" border=\"0\""+
		" alt=\"previous month\"></a></td>\n"+
		"	<td bgcolor=\"" + sColor_Background_Cal + "\" colspan=\"5\">"+
		"<font color=\"" + sColor_Font_Title + "\" face=\"" + sFonttype + "\" size=\"2\">"
		+arr_months[dt_datetime.getMonth()]+" "+dt_datetime.getFullYear()+"</font></td>\n"+
		"	<td bgcolor=\"" + sColor_Background_Cal + "\" align=\"right\"><a href=\"javascript:window.opener.show_calendar('"
		+str_target+"', '"+dt2dtstr(dt_next_month)+"', '" + sLang+ "'," + bSetDate +");\">"+
		"<img src=\"" + sImagePath + "calendar_next.gif\" width=\"16\" height=\"16\" border=\"0\""+
		" alt=\"next month\"></a></td>\n</tr>\n"
	);

	var dt_current_day = new Date(dt_firstday);
	// print weekdays titles
	str_buffer += "<tr>\n";
	for (var n=0; n<7; n++)
		str_buffer += "	<td bgcolor=\"" + sColor_Background_TitlebarWeekdays + "\">"+
		"<font color=\"" + sColor_Font_Title + "\" face=\"" + sFonttype + "\" size=\"2\">"+
		week_days[(n_weekstart+n)%7]+"</font></td>\n";
	// print calendar table
	str_buffer += "</tr>\n";
	while (dt_current_day.getMonth() == dt_datetime.getMonth() ||
		dt_current_day.getMonth() == dt_firstday.getMonth()) {
		// print row heder
		str_buffer += "<tr>\n";
		for (var n_current_wday=0; n_current_wday<7; n_current_wday++) {
				if (dt_current_day.getDate() == dt_datetime.getDate() && dt_current_day.getMonth() == dt_datetime.getMonth())
					// print current date
					str_buffer += "	<td bgcolor=\"" + sColor_Background_ActiveDay + "\" align=\"right\">";
				else if (dt_current_day.getDay() == 0 || dt_current_day.getDay() == 6)
					// weekend days
					str_buffer += "	<td bgcolor=\"" + sColor_Background_Weekend + "\" align=\"right\">";
				else
					// print working days of current month
					str_buffer += "	<td bgcolor=\"" + sColor_Background_Weekdays + "\" align=\"right\">";

				if (dt_current_day.getMonth() == dt_datetime.getMonth())
					
					if (dt_current_day.getDate() == dt_datetime.getDate() &&
					dt_current_day.getMonth() == dt_datetime.getMonth()){
					// prints today
					str_buffer += "<a href=\"javascript:window.opener."+str_target+
					".value='"+dt2dtstr(dt_current_day)+"'; window.close();\">"+
					"<font color=\"" + sColor_Font_Today + "\" face=\"" + sFonttype + "\" size=\"2\">";
					}
					else
					{
					// print days of current month
					str_buffer += "<a href=\"javascript:window.opener."+str_target+
					".value='"+dt2dtstr(dt_current_day)+"'; window.close();\">"+
					"<font color=\"" + sColor_Font_Active_Month + "\" face=\"" + sFonttype + "\" size=\"2\">";
					}				
				else 
					// print days of other months
					str_buffer += "<a href=\"javascript:window.opener."+str_target+
					".value='"+dt2dtstr(dt_current_day)+"'; window.close();\">"+
					"<font color=\"" + sColor_Font_Other_Months + "\" face=\"" + sFonttype + "\" size=\"2\">";
				str_buffer += dt_current_day.getDate()+"</font></a></td>\n";
				dt_current_day.setDate(dt_current_day.getDate()+1);
		}
		// print row footer
		str_buffer += "</tr>\n";
	}
	// print calendar footer
	str_buffer +=
		"<form name=\"cal\">\n<tr><td colspan=\"7\" bgcolor=\"" + sColor_Background_Footer + "\">"+
		"<input type=\"hidden\" name=\"time\" value=\""+dt2tmstr(dt_datetime)+"\">"+
		"</td></tr>\n</form>\n" +
		"</table>\n" +
		"</tr>\n</td>\n</table>\n" +
		"</body>\n" +
		"</html>\n";

	var vWinCal = window.open("", "Calendar", 
		"width=200,height=190,status=no,resizable=no,top=200,left=200");
	vWinCal.opener = self;
	var calc_doc = vWinCal.document;
	calc_doc.write (str_buffer);
	calc_doc.close();
}

// datetime parsing and formatting routimes. modify them if you wish other datetime format
function str2dt (str_datetime) {
	var re_date = /^(\d+)\.(\d+)\.(\d+)/;
	
	if (!re_date.exec(str_datetime))
		{
		alert(sMsgAlertInvalidDate + ": " + str_datetime);
		x = new Date()
		}
	else
		x = new Date (RegExp.$3, RegExp.$2-1, RegExp.$1, RegExp.$4, RegExp.$5, RegExp.$6);
	//alert (x);
	return (x);
}
function dt2dtstr (dt_datetime) {
	
	sDay = dt_datetime.getDate()
	sMonth = dt_datetime.getMonth()+1
	
	if (sDay < 10)
		sDay = "0" + sDay
		
	if (sMonth < 10) 
		sMonth = "0" + sMonth

	return (new String (sDay + "." + sMonth + "." + dt_datetime.getFullYear()));
}

function dt2tmstr (dt_datetime) {
	return (new String (
			dt_datetime.getHours()+":"+dt_datetime.getMinutes()+":"+dt_datetime.getSeconds()));
}


