// 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) {
	var arr_months = ["Enero", "Febrero", "Marzo", "Abril", "Mayo", "Junio",
		"Julio", "Agosto", "Septiembre", "Octubre", "Noviembre", "Diciembre"];
	var week_days = ["Dom", "Lun", "Mar", "Mier", "Jue", "Vie", "Sab"];
	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));
    //window.alert(dt_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_prev_year = new Date(dt_datetime);
	dt_prev_year.setYear(dt_datetime.getFullYear()-1);
	var dt_next_year = new Date(dt_datetime);
	dt_next_year.setYear(dt_datetime.getFullYear()+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>"+
"<head>"+
"<title>.::Calendario::.</title>"+
"<style type=\"text/css\">"+
"<!--"+
"a:link {"+
"	font-family: Arial, Helvetica, sans-serif;"+
"	font-size: 10px;"+
"	color: #000000;"+
"	text-decoration: none;"+
"}"+
"a:visited {"+
"	font-family: Arial, Helvetica, sans-serif;"+
"	font-size: 10px;"+
"	color: #000000;"+
"	text-decoration: none;"+
"}"+
"a:hover {"+
"	font-family: Arial, Helvetica, sans-serif;"+
"	font-size: 10px;"+
"	color: #FF0000;"+
"	text-decoration: none;"+
"}"+
"a:active {"+
"	font-family: Arial, Helvetica, sans-serif;"+
"	font-size: 10px;"+
"	color: #000000;"+
"	text-decoration: none;"+
"}"+
"-->"+
"</style>"+
"<style type=\"text/css\">"+
"<!--"+
".flechas {"+
"	font-family: Arial, Helvetica, sans-serif;"+
"	font-size: 12px;"+
"	color: #000000;"+
"}"+
"-->"+
"</style>"+
"</head>"+
"<body topmargin=\"0\" bottommargin=\"0\" leftmargin=\"0\" rightmargin=\"0\" bgcolor=\"White\">"+
"<table width=\"90%\" border=\"0\" align=\"center\" cellspacing=\"0\">"+
"<tr><td width=\"100%\" bgcolor=\"#CCCCCC\">"+
"<table cellspacing=\"1\" cellpadding=\"3\" border=\"0\" width=\"100%\">"+
"        <tr> "+
"          <td colspan=\"8\" bgcolor=\"#CCCCCC\"><table width=\"100%\" border=\"0\" cellspacing=\"0\" cellpadding=\"0\">"+
"              <tr align=\"center\"> "+
"                <td width=\"14%\" class=\"flechas\"><strong><a href=\"javascript:window.opener.show_calendar('"+str_target+"','"+dt2dtstr(dt_prev_year)+"');\"><img src=\"images/prev_year.gif\" alt=\"Aņo anterior\" width=\"15\" height=\"15\" border=\"0\"></a></strong></td>"+
"                <td width=\"7%\" class=\"flechas\"><strong><a href=\"javascript:window.opener.show_calendar('"+str_target+"','"+dt2dtstr(dt_prev_month)+"');\"><img src=\"images/prev.gif\" alt=\"Mes anterior\" width=\"15\" height=\"15\" border=\"0\"></a></strong></td>"+
"                <td width=\"58%\"><font color=\"#000000\" face=\"tahoma, verdana\" size=\"2\"><strong>"+
"                 "+arr_months[dt_datetime.getMonth()]+" "+dt_datetime.getFullYear()+"</strong></font></td>"+
"                <td width=\"7%\" class=\"flechas\"><strong><a href=\"javascript:window.opener.show_calendar('"+str_target+"','"+dt2dtstr(dt_next_month)+"');\"><img src=\"images/next.gif\" alt=\"Mes siguiente\" width=\"15\" height=\"15\" border=\"0\"></a></strong></td>"+
"                <td width=\"14%\" class=\"flechas\"><strong><a href=\"javascript:window.opener.show_calendar('"+str_target+"','"+dt2dtstr(dt_next_year)+"');\"><img src=\"images/next_year.gif\" alt=\"Aņo siguiente\" width=\"15\" height=\"15\" border=\"0\"></a></strong></td>"+
"              </tr>"+
"            </table></td>"+
"        </tr>"
);

	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 align=\"right\" bgcolor=\"white\">"+
		"<strong><font color=\"#000000\" face=\"tahoma, verdana\" size=\"1\"> "+
		week_days[(n_weekstart+n)%7]+"</font></strong></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=\"#FFCC00\" align=\"right\">";
				//else if (dt_current_day.getDay() == 0 || dt_current_day.getDay() == 6)
					// weekend days
				//	str_buffer += "	<td bgcolor=\"#DBEAF5\" align=\"right\">";
				else
					// print working days of current month
					str_buffer += "	<td bgcolor=\"white\" align=\"right\">";

				if (dt_current_day.getMonth() == dt_datetime.getMonth())
					// print days of current month
					str_buffer += "<a href=\"javascript:window.opener."+str_target+
					".value='"+dt2dtstr(dt_current_day)+"'; window.close();\">";
					//"<font color=\"black\" face=\"tahoma, verdana\" size=\"2\">";
				else 	//"<font color=\"gray\" face=\"tahoma, verdana\" size=\"2\"></font>";
					// print days of other months
					str_buffer += "<a href=\"javascript:window.opener."+str_target+
					".value='"+dt2dtstr(dt_current_day)+"'; window.close();\">"+
					"<font color=\"#CCCCCC\" face=\"tahoma, verdana\" size=\"1\">";
					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\">"+
"          <tr> "+
"            <td colspan=\"8\" align=\"center\" bgcolor=\"#CCCCCC\">"+
"              <input type=\"hidden\" name=\"time\" value=\"12:0:0\">"+
"               <a href=\"javascript:window.close();\">"+
"               <font color=\"#000000\" face=\"Arial,Helvetica\" size=\"2\"><b>Cerrar</b></font></a></td>"+
"          </tr>"+
"        </form>"+
"      </table>"+
"</tr>"+
"</td>"+
"</table>"+
"</body>"+
"</html>";

	var vWinCal = window.open("", "Calendario", 
		"width=190,height=170,status=no,resizable=no,top=200,left=200");
	vWinCal.opener = self;
	vWinCal.focus();
	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
//var re_date = /^(\d+)\-(\d+)\-(\d+)\s+(\d+)\:(\d+)\:(\d+)$/;
	
function str2dt (str_datetime) {
	var re_date = /^(\d+)\-(\d+)\-(\d+)/;
    
	if (!re_date.exec(str_datetime))
		return alert("Invalid Datetime format: "+ str_datetime);
    /// NEMO
    //dia= RegExp.$1;
    //mes= Str(parseInt(RegExp.$2)-1);
    //year= RegExp.$3;
    
    //window.alert (str_datetime);
    //window.alert (RegExp.$3 + ", " + RegExp.$2-1 + ", " + RegExp.$1);
	//return (new Date (RegExp.$3, RegExp.$2, RegExp.$1, 12, 00, 00));
    return (new Date (RegExp.$3, RegExp.$2-1, RegExp.$1, RegExp.$4, RegExp.$5, RegExp.$6));
}

function dt2dtstr (dt_datetime) {
 var t_month=((dt_datetime.getMonth()+1)<10)?"0"+(dt_datetime.getMonth()+1):""+(dt_datetime.getMonth()+1);
 //var t_day=(dt_datetime.getDate()<10)?"0"+dt_datetime.getDate():""+dt_datetime.getDate();
 var t_day=dt_datetime.getDate();
 //var t_month= dt_datetime.getMonth()+1;
             
 return (new String (
  t_day + "-" + t_month+"-" + dt_datetime.getFullYear()));

//         return (new String (
//                             dt_datetime.getDate()+"-"+(dt_datetime.getMonth()+1)+"-"+dt_datetime.getFullYear()+" "));

}
function dt2tmstr (dt_datetime) {
	return (new String (
			dt_datetime.getHours()+":"+dt_datetime.getMinutes()+":"+dt_datetime.getSeconds()));
}

