///////////////////////////////////////////////////////
// buyItem - adds an item to the shopping basket
     function buyItem(newSerial, newItem, newPrice, newQuantity)
         { if (newQuantity <= 0) {
               rc=alert('El total es incorrecto');
          } else {
               if (confirm('Aņade '+newQuantity+' a "'+newItem+'" a la cesta ?')) {
                    index=parent.parent.document.cookie.indexOf("TheBasket");
                    countbegin=(parent.parent.document.cookie.indexOf("=", index) + 1);
                    countend=parent.parent.document.cookie.indexOf(";", index);
                    if (countend == -1) {
                         countend=parent.parent.document.cookie.length;
                    }
                          parent.parent.document.cookie="TheBasket="+parent.parent.document.cookie.substring(countbegin, countend)+"["+newSerial+"|"+newItem+"|"+newPrice+"|"+newQuantity+"]";
               }
          }
     }