// (C) 2000 John M Hanna under the terms of the GPL
// copy freely if you include source!

// script for shopping cart w/ encryption (soon to be)
// put onClick="itemAdd(name, description, quantity, price,weight)" in your html
// and showItems() to show the cart

// You may need to customize buyItems() for your server

// change this if you're not using dollars
currency="€ "
// if you need descriptions longer than 60 chars change this:
dlen=180
wlen=10
// if your quantity or price need be longer than 6 chars, change this:
qlen=6
plen=6
rlen=6
// if this cookie name conflicts with another javascript cookie, change this
basket="shopping"

// how do you calculate shipping costs
function shipping(total) {
 return total/10; // shipping for us is 10% of total
}

function PickItems (t,w,lang) {
 var expdate = new Date();
  expdate.setTime (expdate.getTime() + (24*60*60*1000*365));
  var found = 0;
  for (var i = 0; i < document.picking.elements.length; i++) {
    if((document.picking.elements[i].name.indexOf ('itemsel') != (-1)) && document.picking.elements[i].checked)
    	    {
              found++;
              break;
}
}
if (found == 0){
   if (lang == 'it')
     alert("Almeno un libro deve essere selezionato");
   else 
     alert("No books selected");
   return false;
}
 found = 0;
  for (var i = 0; i < document.picking.elements.length; i++) {
    if((document.picking.elements[i].name.indexOf ('itemsel') != (-1)) && !document.picking.elements[i].checked)
    	    {
   n = document.picking.elements[i].value - found;
  basket='picking';
  var p=itemPrice(n), q=itemQuantity(n), v=parseFloat(p)*parseFloat(q)
  var d=itemDescription(n);
  var ref=itemWeight(n) - 0;
  t-=v
  w-=(ref*q)
 SetCookie(basket,chop(GetCookie(basket),n*tlen,(n+1)*tlen),expdate)
itemAdd2(basket+'_pref',d,q,p,ref+ ""); 
found++;
}
} 
  
  if (t < 30) {
   
    var msg = "";
    if (lang =='it') 
      msg ="Per il Ritira in libreria é necessario un ordine minimo di EUR. 30.\nScegli un'altro libro dal catalogo o un'altra modalit\340 di consegna. Grazie!";
    else
      msg = "Your order must be greater than EUR. 30 for Pick  @ your bookshop Service.\n Please, choice another book from the Catalog or another delivery service.\n Thank you!";
     alert(msg);
    }
  else {
  var url1 = "/cgi-bin/liberdomus/ordine.cgi?language="+lang+"&bill_e="+t+"&o_type=p&weight="+w;
 check_login (url1, '',lang);}
}
function RitiraItems(t,w,lang)
{
 PickItems(t,w,lang);
}

function AcquistaItems(t,w,lang)
{
 BuyItems(t,w,lang);
}
function PrenotaItems(t,w,lang)
{
 BookItems(t,w,lang);
}
function BuyItems (t,w,lang) {
 var expdate = new Date();
  expdate.setTime (expdate.getTime() + (24*60*60*1000*365));
  var found = 0;
  for (var i = 0; i < document.shopping.elements.length; i++) {
    if((document.shopping.elements[i].name.indexOf ('itemsel') != (-1)) && document.shopping.elements[i].checked)
    	    {
              found++;
              break;
}
}
if (found == 0){
   if (lang == 'it')
     alert("Almeno un libro deve essere selezionato");
   else 
     alert("No books selected");
   return false;
}
 found = 0;
  for (var i = 0; i < document.shopping.elements.length; i++) {
    if((document.shopping.elements[i].name.indexOf ('itemsel') != (-1)) && !document.shopping.elements[i].checked)
    	    {
   n = document.shopping.elements[i].value - found;
  basket='shopping';
  var p=itemPrice(n), q=itemQuantity(n), v=parseFloat(p)*parseFloat(q)
  var d=itemDescription(n);
  var ref=itemWeight(n) - 0;
  t-=v
  w-=(ref*q)
 SetCookie(basket,chop(GetCookie(basket),n*tlen,(n+1)*tlen),expdate)
itemAdd2(basket+'_pref',d,q,p,ref+ ""); 
found++;
}
} 
  var url1 = "/cgi-bin/liberdomus/ordine.cgi?language="+lang+"&bill_e="+t+"&o_type=s&weight="+w;
  var url2 = "/liberdomus/logord"+lang+".html";
 check_login (url1, url2,lang);
}
function BookItems(t,w,lang) {
 var expdate = new Date();
  expdate.setTime (expdate.getTime() + (24*60*60*1000*365));
  var found = 0;
  for (var i = 0; i < document.booking.elements.length; i++) {
    if((document.booking.elements[i].name.indexOf ('itemsel') != (-1)) && document.booking.elements[i].checked)
    	    {
              found++;
              break;
}
}
if (found == 0){
   if (lang == 'it')
     alert("Almeno un libro deve essere selezionato");
   else 
     alert("No books selected");
   return false;
}
 found = 0;
  for (var i = 0; i < document.booking.elements.length; i++) {
    if((document.booking.elements[i].name.indexOf ('itemsel') != (-1)) && !document.booking.elements[i].checked)
    	    {
   n = document.booking.elements[i].value - found;
  basket='booking';
  var p=itemPrice(n), q=itemQuantity(n), v=parseFloat(p)*parseFloat(q)
  var d=itemDescription(n);
  var ref=itemWeight(n) - 0;
  t-=v
  w-=(ref*q)
 SetCookie(basket,chop(GetCookie(basket),n*tlen,(n+1)*tlen),expdate)
itemAdd2(basket+'_pref',d,q,p,ref+ ""); 
found++;
}
} 
   var url1 = "/cgi-bin/liberdomus/ordine.cgi?language="+lang+"&bill_e="+t+"&o_type=b&weight="+w;
  var url2 = "/liberdomus/logord.html?language="+lang;
 check_login (url1, url2,lang);
}
// change the showItems() function if you don't like how the
// shopping cart looks -- it's at the end of the script

// You shouldn't need to change anything else here until the body...
// have fun!

tlen=(wlen+dlen+qlen+plen)+1

function itemCount(co) { // return number of items in basket
 if (!co) return 0;
 n=Math.floor(co.length/tlen);
 return Math.floor(co.length/tlen)
}

function chop(s,start,end) { return s.substr(0,start)+s.substr(end) }

function delItem(basket,n) {
 var expdate = new Date();
  expdate.setTime (expdate.getTime() + (24*60*60*1000*365));
 
 SetCookie(basket,chop(GetCookie(basket),n*tlen,(n+1)*tlen),expdate)
 refresh();
}

function fetch(s,n) { return s.substr(n*tlen,tlen) }

function itemWeight(n) { // n=item number
 return fetch(GetCookie(basket),n).substr(0,wlen)
}
function itemDescription(n) { // n=item number
 return fetch(GetCookie(basket),n).substr(wlen,dlen)
}
function itemQuantity(n) {
 return fetch(GetCookie(basket),n).substr(wlen+dlen,qlen)
}
 function itemPrice(n) {
 return fetch(GetCookie(basket),n).substr(wlen+dlen+qlen,plen)
}

 function itemRealPrice(n) {
 return fetch(GetCookie(basket),n).substr(wlen+dlen+qlen+plen,rlen)
}
function pad(s,n) {
 var sf = String(s);
 var i=n-sf.length;
 while(i-- > 0) { sf+=" " }
 var sf = sf.substr(0,n);
 return sf;
}
function itemqSet(basket,n,q) { // just change quantity
// q = String(q).replace('\s','');
 if(q == 0) q = 1;
 q=pad(q,qlen)
 var cookie=GetCookie(basket)
 var expdate = new Date();
  expdate.setTime (expdate.getTime() + (24*60*60*1000*365));
 
 SetCookie(basket,cookie.substr(0,n*tlen+dlen+wlen)+q+cookie.substr((n+1)*tlen-plen-1),expdate)
 refresh();
}
function itemSet(n,w,d,q,p) { // description, quantity, price
 var s=pad(w,wlen)+pad(d,dlen)+pad(q,qlen)+pad(p,plen)
 var cookie=GetCookie(basket)
 var expdate = new Date();
  expdate.setTime (expdate.getTime() + (24*60*60*1000*365));
 
 if (cookie)
 SetCookie(basket,cookie.substr(0,n*tlen)+s+"_"+cookie.substr((n+1)*tlen),expdate)
 else
   SetCookie(basket,s+"_",expdate);
}

function itemAdd2(name,d,q,p,w) {
 basket=name;
 itemSet(itemCount(GetCookie(basket)),w,d,q,p);
 return true;
}
function itemAdd(name,d,q,p,w) {
 if (check_login_car() == false) return false;
 basket=name;
 itemSet(itemCount(GetCookie(basket)),w,d,q,p);
 return true;
}
function emptyCart(basket) {
 var expdate = new Date();
  expdate.setTime (expdate.getTime() + (24*60*60*1000*365));
 SetCookie(basket,'',expdate)
 refresh();
}
function printCart(basket,lang) {
var specs='width=800,height=500,resizable=yes,scrollbars=yes,status=0'; 
  var url = '/cgi-bin/liberdomus/print_cart.cgi?o_type=' + basket+ '&language=' + lang;
 
  var infow=window.open(url,'cart',specs); 
  if (!infow) return; 
  
 infow.focus('cart');
//  infow.location.href = '/cgi-bin/print_cart.cgi?o_type=' + basket+ '&language=' + lang;
}
function refresh() {
 self.location.href = self.location.href;
}
function money(v) {
 v=Math.round(parseFloat(v)*100)
 v=String(v)
 var l=v.length-2
 v=v.substring(0,l)+"."+v.substring(l)
 return currency+" "+v
}

function showItems(name,lang,origin) {
  basket=name;
  if (lang =='it') {
    if (basket.indexOf('book') != -1)
    tit1 ="Prenotazioni";
    else {
    if (basket.indexOf('shop') != -1)
    tit1 ="Acquisti";
    else
      tit1 = "Ritira in Libreria";
    }
    l2 = "Titolo libro";
    l3 = "Importo";
    l4 = "Prezzo";
    l5 = "Azione";
    l6 = "cancella";
    but1 ="Scelta altri titoli";
    if (basket.indexOf('book') == -1) {
      but2 ="Conferma";
    l1 = "Compra";
    }
    else {
      but2 ="Prenota";
    l1 = "Seleziona";
    }
   empty = '<input type="button" value="Svuota Carrello" onclick="emptyCart(\''+basket+'\')">';
   print1 = '<input type="button" value="Stampa Carrello" onclick="printCart(\''+basket+'\', \'it\')">';
  }
  else {
    if (basket.indexOf('shop') != -1)
      tit1 ="Shopping Cart";
    else {
      if (basket.indexOf('book'))
        tit1 = "P&#064;B (Pick &#064; your bookshop)";
      else
        tit1 ="Selections Form";
    }
    l2 = "Book title";
    l4 = "Price";
    l3 = "Value";
    l5 = "Action";
    l6 = "cancel";
    but1 ="Choose other books";
    if (basket.indexOf('book') != -1){
      but2 ="Confirm Selections";
      l1 = "Select";
    }
    if (basket.indexOf('shop') != -1) {
      but2 ="Buy";
      l1 = "Buy";
    }
    if (basket.indexOf('pick') != -1){
      but2 ="Pick";
      l1 = "Pick";
    }
   empty = '<input type="button" value="Empty Cart" onclick="emptyCart(\''+basket+'\')">';
   print1 = '<input type="button" value="Print Cart" onclick="printCart(\''+basket+'\', \'\')">';
   }
 var n, m=itemCount(GetCookie(basket))
 var newbasket= GetCookie(basket+'_pref');
 if (itemCount(newbasket) !=0) {
 var expdate = new Date();
  expdate.setTime (expdate.getTime() + (24*60*60*1000*365));
 if (m == 0)
 SetCookie(basket, newbasket);
 else
 SetCookie(basket, newbasket + GetCookie(basket),expdate);
 SetCookie(basket+'_pref','',expdate)

 }
 t=0
 w=0
 m=itemCount(GetCookie(basket));
 if(m==0) {
  if (lang != 'it')
  vuo = ' is empty';
  else
  vuo = ' &egrave; vuoto';
  document.writeln('<tr><td colspan=6 bgcolor="#006600" class="text" align=left>&nbsp;&nbsp;'+tit1+vuo+'\
</td></tr>');
 } 
else {
  document.writeln('\
<br><br><form name="' + basket + '" action="" method="post"> \
<tr><td colspan=6 bgcolor="#006600" class="text" align=left>&nbsp;&nbsp;\
'+tit1+'</td></tr>\
    <tr>\
	<td width="2%" class="text" bgcolor="#b6b66b">'+l1+'</td>\
        <td align="center" width="50%" bgcolor="#b6b66b" class="text">'+l2+'</td>\
        <td align="center" width="10%"bgcolor="#b6b66b" class="text">'+l3+'</td>\
        <td align="center" width="10%" bgcolor="#b6b66b" class="text">Qt.</td>\
        <td align="center" width="10%"bgcolor="#b6b66b" class="text">'+l4+'</td>\
        <td align="center" width="10%" bgcolor="#b6b66b" class="text">'+l5+'</td>\
    </tr>')
 for(n=0; n<m; n++) {
  var p=itemPrice(n), q=itemQuantity(n), v=parseFloat(p)*parseFloat(q)
  var d=repch(unescape(itemDescription(n)),"XYZABC","'");
  d = d.substring(0,d.lastIndexOf('<br>'));
  var ref=itemWeight(n) - 0;
  t+=v
  w+=(ref*q)
  q = '<input type="text" size="2" value="'+q+'"onblur="itemqSet(\''+basket+'\','+n+',this.value)">';
  act = '<a href="javascript:delItem(\''+basket+'\','+n+')" class=textbox>' +
          '<img src="/liberdomus/images/delete.gif" border=0>'+ l6 +'</a>';
  document.writeln('\
    <tr>\
        <td width="2% align="center""><input type="checkbox" value="'+n+'" name="itemsel" checked="checked"></td>\
        <td align="left" width="50%" class="HomeText5">'+d+'</td>\
        <td align="right" class="HomeText5"><em>'+money(p)+'\
        </em>\
        </td>\
        <td align="center" width="10%" class="HomeText5">'+q+'\
        </font></td>\
        <td align="right" width="10%" class="HomeText5">'+money(v)+'\
        </td>\
        <td bgcolor="#b6b66b" width="10%"align=center class="HomeText5">'+act+'\
        </td>\
    </tr>')
 }
 if (lang == 'it')
   l4= 'Totale ordine';
  else 
   l4= 'Total order';
 if (lang == 'it') {
  action="Acquista";
  if (basket == 'booking')
    action = "Prenota";
  if (basket == 'picking')
    action = "Ritira";
}
 else {
  action="Buy";
  if (basket == 'booking')
    action = "Book";
  if (basket == 'picking')
    action = "Pick";
}
   //uno step indietro 
  url1 = "window.history.go(-1)";
  if (origin == 'full')
   url1 = "window.history.go(-2)";
  
 document.writeln('\
    <tr>\
        <td align="right" colspan=4 class="HomeText10">'+l4+'</td>\
        <td align="right" width="10%" class="HomeText5"><strong>\
        '+money(t)+'</strong>\
        </td>\
    </tr>')
   document.writeln('\
    <tr>\
       <td align="center" colspan=5 class="HomeText5"><input\
        type="button" value="'+but2+'" onclick="'+action+'Items(\''+t+'\',\''+w+'\',\''+lang+'\')">\
        &nbsp;&nbsp;'+empty+'&nbsp;&nbsp;<input type="button" value="'+but1+'" onclick="'+url1+'">&nbsp;&nbsp;'+print1+'</td>\
    </tr>')
   document.write('</form>');
 }
}

function showItems2(name,lang,ship,zone,credit,discount,acc) {
  basket=name;
  var rit = 0;
  var colspan = 4;
  if(basket.indexOf('book') != -1)
    colspan = 5;
  var riga = '<tr><td align="center" colspan=' + colspan + ' class="HomeText5">&nbsp;</td>' +
       '<td align="right" width="10%" class="HomeText5"><hr size=2></td></tr>';
  if (lang =='it') {
    l1 = "vs. riferimento";
    l2 = "Titolo libro";
    l3 = "Importo";
    l4 = "Prezzo";
    l5 = "Acconto";
    l6 ="Saldo";
    l7 ="";
    if (basket.indexOf('book') != -1) {
    tit1 ="Prenotazioni";
    l1 = "fondo";
    l7 = "localizz.";
      rit = 2;
    }
    else {
     if(basket.indexOf('shop') != -1)
      tit1 ="Acquisti";
     else {
      tit1 ="Ritira in libreria";
      rit = 1;
      riga = '<tr><td align="center" colspan=2 class="HomeText5">&nbsp;</td>' +
        '<td align="right" width="10%" colspan=3 class="HomeText5"><hr size=2></td></tr>';
      colspan = 3;
}
    }
   }
  else {
    l7 ="";
    l1 = "your reference";
    l2 = "Book title";
    l4 = "Price";
    l3 = "Value";
    l5 = "Advance Payment";
    l6 = "Saldo";
    if (basket.indexOf('shop') != -1)
      tit1 ="Shopping Cart";
    else {
      if (basket.indexOf('book') != -1) {
        tit1 ="Selections Form";
    l1 = "fund code";
    l7 = "library loc.";
      rit = 2;
      }
      else {
        tit1 = "P&#064;B (Pick&#064; your bookshop)";
        rit = 1;}
    } 
   }
 var n, m=itemCount(GetCookie(basket))
 t=0
 w=0
 if(m==0) {
  if (lang != 'it')
  vuo = ' is empty';
  else
  vuo = ' &egrave; vuoto';
 } 
else {
  var newcol = '';
  if (rit == 1)
    newcol  = '<td align="center" width="10%"bgcolor="#b6b66b" class="HomeText2">'+l5+'</td>' + '<td align="center" width="10%"bgcolor="#b6b66b" class="HomeText2">'+l6+'</td>';
   else
     newcol ='<td align="center" width="10%" bgcolor="#b6b66b" class="HomeText2">Qt.</td>' +
        '<td align="center" width="10%"bgcolor="#b6b66b" class="HomeText2">'+l4+'</td>';
  if (rit == 2) {
  document.writeln('\
<br><table width="98%" border=0><tr><td width=2%>&nbsp;</td><td>\
<table width=100% cellpadding="3" cellspacing="3" bordercolor="#ffffff">\
<tr><td colspan=7 bgcolor="#006600" class="text" align=left><b>\
'+tit1+'</b></td></tr>\
    <tr>\
        <td align="center" width="10%"bgcolor="#b6b66b" class="HomeText2">'+l1+'</td>\
        <td align="center" width="10%"bgcolor="#b6b66b" class="HomeText2">'+l7+'</td>\
        <td align="center" width="40%" bgcolor="#b6b66b" class="HomeText2">'+l2+'</td>\
        <td align="center" width="10%"bgcolor="#b6b66b" class="HomeText2">'+l3+'</td>'+ newcol + '</tr>')
}
  else {
  document.writeln('\
<br><table width="98%" border=0><tr><td width=2%>&nbsp;</td><td>\
<table width=100% cellpadding="3" cellspacing="3" bordercolor="#ffffff">\
<tr><td colspan=6 bgcolor="#006600" class="text" align=left><b>\
'+tit1+'</b></td></tr>\
    <tr>\
        <td align="center" width="10%"bgcolor="#b6b66b" class="HomeText2">'+l1+'</td>\
        <td align="center" width="50%" bgcolor="#b6b66b" class="HomeText2">'+l2+'</td>\
        <td align="center" width="10%"bgcolor="#b6b66b" class="HomeText2">'+l3+'</td>'+ newcol + '</tr>')
  }
 for(n=0; n<m; n++) {
  var p=itemPrice(n), q=itemQuantity(n), v=parseFloat(p)*parseFloat(q)
  var d=repch(unescape(itemDescription(n)),"XYZABC","'");
  d = d.substring(0,d.lastIndexOf('<br>'));
  var ref=itemWeight(n);
  t+=v
  w+=ref
  act = '&nbsp;';
    if (acc == 0)
      acc = 85;
    var a = v*parseFloat(acc)/100;
    var s = v-a;
  var newcol ='<td align="center" width="10%" class="HomeText5">'+q+
'</font></td><td align="right" width="10%" class="HomeText5"><strong>'+
money(v)+'</strong></td>';
  if (rit == 1) {
    newcol ='</td><td width="10%" align="right" class="HomeText5"><strong>'+
money(a) +  '</strong></td><td width="10%" align="right" class="HomeText5"><strong>'+
money(s) +  '</strong></td>';
}
  if (rit == 2) {
  document.writeln('\
    <tr>\
        <td align="center" width="10%" class="HomeText5"><input name="ref'+n+'" size=5 value=""></td>\
        <td align="center" width="10%" class="HomeText5"><input name="loc'+n+'" size=5 value=""></td>\
        <td align="left" width="40%" class="HomeText5">'+d+'</td>\
        <td align="right" class="HomeText5"><em>'+money(p)+'\
        </em>\
        </td>'+newcol+'\
    </tr>')
}
  else {
  document.writeln('\
    <tr>\
        <td align="center" width="10%" class="HomeText5"><input name="ref'+n+'" size=5 value=""></td>\
        <td align="left" width="50%" class="HomeText5">'+d+'</td>\
        <td align="right" class="HomeText5"><em>'+money(p)+'\
        </em>\
        </td>'+newcol+'\
    </tr>')
   }

 }
  tot  = t+parseFloat(ship);
  if (discount >0) {
    dis =tot*3/100;
    tot = tot - dis;
   }
  credit1  = parseFloat(credit);
  if ( credit1 > 0 ) {
    if (credit1 > tot)
      tot = "0.00";
    else
      tot = tot - credit1;
   } 
 if (lang == 'it')
  {
     l1= 'Destinazione';
     l2= 'Spese di Spedizione';
     l3= 'Costo dei libri';
     l4= 'Totale ordine';
     l5= 'Credito resa';
     l6= 'Ulteriore sconto';
     l7 = "Importi dovuti";
   }
  else {

     l1= 'Shipment zone';
     l2= 'Postage Cost';
     l3= 'Amount books';
     l4= 'Total order';
     l5= 'Credit';
     l6= 'Further discount';
     l7= 'Total Advance payment';
   }

// stampa dello ship if (ship) 
 if (ship > 0) {
 document.writeln(riga + '\
  <tr>\
        <td align="right" colspan=' + colspan + ' class="HomeText10"><b>'+l2+'('+zone+'):</b></td>\
        <td align="right" width="10%" class="HomeText5"><strong>\
        '+money(ship)+'</strong></td></tr>'+riga)
}
 if (discount > 0) {
 document.writeln('\
  <tr>\
        <td align="right" colspan=' + colspan+ ' class="HomeText10"><b>'+l6+'</b></td>\
        <td align="right" width="10%" class="HomeText5"><strong>\
        '+money(dis)+'</strong></td></tr>' + riga)
}

 if (credit > 0) {
 document.writeln('\
  <tr>\
        <td align="right" colspan=' + colspan + ' class="HomeText10"><b>'+l5+'</b></td>\
        <td align="right" width="10%" class="HomeText5"><strong>\
        '+money(credit)+'</strong></td></tr>'+riga)
}
  if (rit == 1)
 document.writeln('\
    <tr>\
        <td align="right" colspan=3 class="HomeText10"><b>'+l7+'</b></td>\
        <td align="right" width="10%" class="HomeText5"><strong>\
        '+money((parseFloat(tot-ship)*parseFloat(acc)/100)+ parseFloat(ship))+'</strong>\
        </td>\
        <td align="right" width="10%" class="HomeText5"><strong>\
        '+money((parseFloat(tot-ship))*parseFloat(100-acc)/100)+'</strong>\
        </td>\
    </tr><tr><td colspan=5>&nbsp;</td></tr>')
  else
 document.writeln('\
    <tr>\
        <td align="right" colspan='+colspan +' class="HomeText10"><b>'+l4+'</b></td>\
        <td align="right" width="10%" class="HomeText5"><strong>\
        '+money(tot)+'</strong>\
        </td>\
    </tr><tr><td colspan=5>&nbsp;</td></tr>')
}
   document.writeln('\
</table>\
</td></tr></table>')
}


function cartString() {
 var n, m=itemCount(GetCookie(basket))
 var r=''
 t=0
 if(m==0) {
  return('Empty shopping cart.')
 } else {
  for(n=0; n<m; n++) {
   var p=itemPrice(n), q=itemQuantity(n), v=parseFloat(p)*parseFloat(q)
   var d=itemDescription(n)
   t+=v
   r+=q + " @ " +money(p)+" ("+money(v)+") "+d+"\n"
  }
  r+="shipping: "+money(shipping(t))+"\n"
  r+="total: "+money(t+shipping(t))+'\n'
 }
 // trim extra spaces
 m=0; n=0
 var rr='', c
 while(n<r.length) {
  c=r.charAt(n++)
  if(c != ' ' || t != ' ') rr+=c
  t=c
 }
 return rr
}
function ccIsValid(st) {
 // Encoding only works on cards with less than 19 digits
 if (st.length > 19)
  return (false);

 var sum = 0, mul = 1, i; var digit
 for (i=st.length-1; i>=0; i--) {
  digit=st.charCodeAt(i)-48
  if(digit <= 9 && digit >=0) {
   digit *=mul;
   if(digit > 9) digit=digit % 10 +1
   sum += digit
   mul ^=3
  }
 }

 return ((sum % 10) == 0)
}