
// funzione per aprire una pagina esterna
var popUpWin=0;
function popUpWindow(URLStr, left, top, width, height)
{
  if(popUpWin)
  {
    if(!popUpWin.closed) popUpWin.close();
  }
  popUpWin = open(URLStr, 'popUpWin', 'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=no,copyhistory=yes,width='+width+',height='+height+',left='+left+', top='+top+',screenX='+left+',screenY='+top+'');
}

// funzione per colorare le righe pari e dispari
function alternate(id){ 
 if(document.getElementsByTagName){  
   var table = document.getElementById(id);   
   var rows = table.getElementsByTagName("tr");   
   for(i = 0; i < rows.length; i++){           
 //manipulate rows 
     if(i % 2 == 0){rows[i].className = "riga_dispari";}
		 else{rows[i].className = "riga_pari";}       
   } 
 } 
}

// funzione per colorare la riga over
function mouse_sopra(id,style){
riga.className = "riga_over";
}


// funzione per la generazione del calendario
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
	var str_buffer = new String (
		"<html>\n"+
		"<head>\n"+
		"<title>Selezionare la data</title>\n"+		
		"<link href=\"stile_calendario.css\" rel=\"stylesheet\" type=\"text/css\">\n"+
		"</head>\n"+
		"<body>\n"+
		"<table cellspacing=\"0\" border=\"0\" width=\"100%\">\n"+
		"<tr><td bgcolor=\"#CCCCCC\">\n"+
		"<table cellspacing=\"1\" cellpadding=\"3\" border=\"0\" width=\"100%\">\n"+
		"<tr bgcolor=\"#CCCCCC\">\n	<td><a href=\"javascript:window.opener.show_calendar('"+str_target+"', '"+ dt2dtstr(dt_prev_month)+"'+document.cal.time.value);\">"+
		"<img src=\"img/prev.gif\" border=\"0\" alt=\"mese precedente\"></a></td>\n"+
		"	<td colspan=\"5\" align=\"center\">\n"+
		"<font class=\"bianco\"><strong>"+arr_months[dt_datetime.getMonth()]+" "+dt_datetime.getFullYear()+"</strong></font></td>\n"+
		"	<td align=\"right\"><a href=\"javascript:window.opener.show_calendar('"+str_target+"', '"+dt2dtstr(dt_next_month)+"'+document.cal.time.value);\"><img src=\"img/next.gif\" border=\"0\" alt=\"mese successivo\"></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=\"#999999\">"+
		"<font class=\"bianco\">"+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\" 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=\"#ffffff\" 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)+"'+document.cal.time.value; window.close();\">"+
					"<font class=\"numeri\">";
				else 
					// print days of other months
					str_buffer += "<a href=\"javascript:window.opener."+str_target+
					".value='"+dt2dtstr(dt_current_day)+"'+document.cal.time.value; window.close();\">"+
					"<font class=\"numeri_chiari\">";
				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=\"#cccccc\">"+
		"<font class=\"bianco\">"+
		"Time: <input type=\"text\" name=\"time\" value=\""+dt2tmstr(dt_datetime)+
		"\" size=\"8\" maxlength=\"8\" class=\"numeri_chiari\"></font></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=220,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+)\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 (
			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()));
}

// fine funzione del calendario


// funzione per il controllo del codice fiscale
function ControllaCF(cf)
{
    var validi, i, s, set1, set2, setpari, setdisp;
    if( cf == '' )  return '';
    cf = cf.toUpperCase();
    if( cf.length != 16 )
        return "Lunghezza del codice fiscale non "
        +"corretta: il codice fiscale dovrebbe essere lungo\n"
        +"esattamente 16 caratteri.\n";
    validi = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
    for( i = 0; i < 16; i++ ){
        if( validi.indexOf( cf.charAt(i) ) == -1 )
            return "Il codice fiscale contiene un carattere non valido `" +
                cf.charAt(i) +
                "'.\nI caratteri validi sono le lettere e le cifre.\n";
    }
    set1 = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
    set2 = "ABCDEFGHIJABCDEFGHIJKLMNOPQRSTUVWXYZ";
    setpari = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
    setdisp = "BAKPLCQDREVOSFTGUHMINJWZYX";
    s = 0;
    for( i = 1; i <= 13; i += 2 )
        s += setpari.indexOf( set2.charAt( set1.indexOf( cf.charAt(i) )));
    for( i = 0; i <= 14; i += 2 )
        s += setdisp.indexOf( set2.charAt( set1.indexOf( cf.charAt(i) )));
    if( s%26 != cf.charCodeAt(15)-'A'.charCodeAt(0) )
        return "Codice fiscale non corretto:\n"+
            "il codice di controllo non corrisponde.\n";
    return "ok";
}



// funzione per il controllo della partita iva
function ControllaPIVA(pi)
{
    if( pi == '' )  return '';
    if( pi.length != 11 )
        return "Lunghezza della partita IVA non corretta:" +
            "la partita IVA dovrebbe essere lunga\n" +
            "esattamente 11 caratteri.\n";
    validi = "0123456789";
    for( i = 0; i < 11; i++ ){
        if( validi.indexOf( pi.charAt(i) ) == -1 )
            return "La partita IVA contiene un carattere non valido `" +
                pi.charAt(i) + "'.\nI caratteri validi sono le cifre.\n";
    }
    s = 0;
    for( i = 0; i <= 9; i += 2 )
        s += pi.charCodeAt(i) - '0'.charCodeAt(0);
    for( i = 1; i <= 9; i += 2 ){
        c = 2*( pi.charCodeAt(i) - '0'.charCodeAt(0) );
        if( c > 9 )  c = c - 9;
        s += c;
    }
    if( ( 10 - s%10 )%10 != pi.charCodeAt(10) - '0'.charCodeAt(0) )
        return "Partita IVA non valida:\n" +
            "il codice di controllo non corrisponde.\n";
    return 'ok';
}
