// 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 = ["Gennaio", "Febbraio", "Marzo", "Aprile", "Maggio", "Giugno",
                   "Luglio", "Agosto", "Settembre", "Ottobre", "Novembre", "Dicembre"];
 var week_days = ["Do", "Lu", "Ma", "Me", "Gi", "Ve", "Sa"];
 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
/* Questo č il link originario (se si vuole riaggiungere l'ora)
"<a href=\"javascript:window.opener."+str_target+".value='"+dt2dtstr(dt_current_day)+"+document.cal.time.value'; window.close();\">"+
*/
 var str_buffer = new String (
     "<html>\n"+
      "<head>\n"+
       "<title>Calendario</title>\n"+
      "</head>\n"+
      "<body bgcolor='Black'>\n"+
       "<table class='clsOTable' cellspacing='0' border='0' width='100%'>\n"+
        "<tr>\n"+
         "<td bgcolor='#4D4D4D'>\n"+
          "<table cellspacing='1' cellpadding='3' border='0' width='100%'>\n"+
           "<tr>\n"+
            "<td bgcolor='#4D4D4D'>"+
               "<a href=\"javascript:window.opener.show_calendar('"+
                   str_target+"', '"+ dt2dtstr(dt_prev_month)+"');\">"+  //+document.cal.time.value
                 "<img src='img/prev.gif' width='16' height='16' border='0'"+
                 " alt='mese precedente'></a>\n"+
            "</td>\n"+
            "<td bgcolor='#4D4D4D' colspan='5' align='center'>"+
              "<font color='white' face='tahoma, verdana' size='2'>"
                     +arr_months[dt_datetime.getMonth()]+" "+dt_datetime.getFullYear()+
              "</font>\n"+
            "</td>\n"+
            "<td bgcolor='#4D4D4D' align='right'>"+
                "<a href=\"javascript:window.opener.show_calendar('"
                    +str_target+"', '"+dt2dtstr(dt_next_month)+"');\">"+  //+document.cal.time.value
                  "<img src='img/next.gif' width='16' height='16' border='0'"+
                  " alt='mese successivo'></a>\n"+
            "</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='#888888'>"+
                "<font color='white' 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='#0099FF' align='right'>";
            else if (dt_current_day.getDay() == 0 || dt_current_day.getDay() == 6)
                   // weekend days
                   str_buffer += "	<td bgcolor='#D5D5D5' 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();\">"+ //+document.cal.time.value
                         "<font color='black' face='tahoma, verdana' size='2'>";
            else
              // print days of other months
              str_buffer += "<a href=\"javascript:window.opener."+str_target+
                         ".value='"+dt2dtstr(dt_current_day)+"'; window.close();\">"+ //+document.cal.time.value
                         "<font color='gray' face='tahoma, verdana' 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 +=
/* Il form eliminato qua sotto inserisce l'orario nella tabella. E' perņ necessario
   reinserire anche gli altri pezzi tagliati!*/
/*            "<form name='cal'>\n<tr><td colspan='7' bgcolor='#888888'>"+
              "<font color='White' face='tahoma, verdana' size='2'>"+
              "Ora: <input type='text' name='time' value='"+dt2tmstr(dt_datetime)+
              "' size='8' maxlength='8'></font></td></tr>\n</form>\n" +  */
              "</table>\n" +
              "</tr>\n</td>\n</table>\n" +
              "</body>\n" +
              "</html>\n";
    var vWinCal = window.open("", "Eventi",
                "width=200,height=215,status=no,resizable=yes,top=250,left=400");
    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) {
        // Sostituire re_date per tornare al vecchio formato con l'ora!
	var re_date = /^(\d+)\-(\d+)\-(\d+)$/; //var re_date = /^(\d+)\-(\d+)\-(\d+)\s+(\d+)\:(\d+)\:(\d+)$/;
	if (!re_date.exec(str_datetime))
		return alert("Invalid Datetime format: "+ str_datetime);
	return (new Date (RegExp.$3, RegExp.$2-1, RegExp.$1, RegExp.$4, RegExp.$5, RegExp.$6));
}
function dt2dtstr (dt_datetime) {
	return (new String (                                               // E' necessario aggiungere lo spazio finale
			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()));
}


