// 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

function show_calendar(str_target, str_datetime, lang) 
{
if(lang=="de") {
  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"];
} else {
  var arr_months = ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"];
  var week_days = ["Son", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"];
}
var aufruf = lang;
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));
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>Hahn-Airport-Shuttle :: Kalender</title>\n"+
	"<link rel=\"stylesheet\" type=\"text/css\" href=\"/templates/default/css/kalender.css\" />\n"+
	"</head>\n"+
	"<body bgcolor=\"White\">\n"+
	"<table class=\"clsOTable\" cellspacing=\"0\" border=\"0\" width=\"100%\">\n"+
	"<tr><td class=\"headline\" bgcolor=\"#73a5d3\">\n"+
	"<table cellspacing=\"1\" cellpadding=\"3\" border=\"0\" width=\"100%\">\n"+
	"<tr>\n	<td bgcolor=\"#73a5d3\"><a href=\"javascript:window.opener.show_calendar('"+
	str_target+"', '"+ dt2dtstr(dt_prev_month)+"', '"+ aufruf+"');\">"+
	"<img src=\"/img/prev.gif\" width=\"16\" height=\"16\" border=\"0\""+
	" alt=\"previous month\"></a></td>\n"+
	"<td bgcolor=\"#73a5d3\" style=\"text-align: center\" colspan=\"5\">"+
	"<font color=\"white\" face=\"tahoma, verdana\" size=\"2\">"
	+arr_months[dt_datetime.getMonth()]+" "+dt_datetime.getFullYear()+"</font></td>\n"+
	"<td bgcolor=\"#73a5d3\" style=\"text-align: right\"><a href=\"javascript:window.opener.show_calendar('"
	+str_target+"', '"+dt2dtstr(dt_next_month)+"', '"+ aufruf+"');\">"+
	"<img src=\"/img/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=\"#FFF71B\" align=\"center\">"+
	"<font color=\"black\" face=\"tahoma, verdana\" 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=\"#FFB6C1\" onclick=\"window.opener.returnDate("+dt2dtstr_new(dt_current_day)+",'"+aufruf+"'); window.close();\" style=\"text-align: right\">";
	else if (dt_current_day.getDay() == 0 || dt_current_day.getDay() == 6)
	// weekend days
	str_buffer += "	<td bgcolor=\"#DBEAF5\" onclick=\"window.opener.returnDate("+dt2dtstr_new(dt_current_day)+",'"+aufruf+"'); window.close();\" style=\"text-align: right\">";
	else
	// print working days of current month
	str_buffer += "	<td bgcolor=\"#eeeeee\" onclick=\"window.opener.returnDate("+dt2dtstr_new(dt_current_day)+",'"+aufruf+"'); window.close();\" style=\"text-align: right\">";
	if (dt_current_day.getMonth() == dt_datetime.getMonth())
	// print days of current month
	str_buffer += "<a href=\"javascript:window.opener.returnDate("+dt2dtstr_new(dt_current_day)+",'"+aufruf+"'); window.close();\">";
	else 
	// print days of other months
	str_buffer += "<a class=\"othermonth\" href=\"javascript:window.opener.returnDate("+dt2dtstr_new(dt_current_day)+",'"+aufruf+"'); window.close();\">";
	str_buffer += dt_current_day.getDate()+"</a></td>\n";
	dt_current_day.setDate(dt_current_day.getDate()+1);
	}
// print row footer
str_buffer += "</tr>\n";
}
// print calendar footer
str_buffer +=
"</table>\n" +
"</tr>\n</td>\n</table>\n" +
"</body>\n" +
"</html>\n";

var vWinCal = window.open("", "Kalender", "width=230,height=200,status=no,resizable=yes,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))
	return alert("Invalid Date format: "+ str_datetime);
return (new Date (RegExp.$3, RegExp.$2-1, RegExp.$1));
}

function dt2dtstr (dt_datetime) 
{
return (new String (dt_datetime.getDate()+"."+(dt_datetime.getMonth()+1)+"."+dt_datetime.getFullYear()+""));
}

function dt2dtstr_new (dt_datetime) 
{
//return (new String (dt_datetime.getDate()+"."+(dt_datetime.getMonth()+1)+"."+dt_datetime.getFullYear()+""));
return (new String ("'"+dt_datetime.getDate()+"','"+(dt_datetime.getMonth()+1)+"','"+dt_datetime.getFullYear()+"'"));
}

function kalender(lang) {
document.forms[0].datum.value = document.forms[0].tag.options[document.forms[0].tag.selectedIndex].value+"."+document.forms[0].monat.options[document.forms[0].monat.selectedIndex].value+"."+document.forms[0].jahr.options[document.forms[0].jahr.selectedIndex].value;

//alert(document.forms[0].datum.value);
show_calendar('document.forms[0].datum', document.forms[0].datum.value, lang);
}

function returnDate(inDay, inMonth, inYear, which) {
  var day   = inDay;
  var month = inMonth;
  var year  = inYear - document.forms[0].jahr.options[0].value;

  document.forms[0].tag.options[day-1].selected=true;
  document.forms[0].monat.options[month-1].selected=true;
  document.forms[0].jahr.options[year].selected=true;
}

