cmpStringInsensitive(a, b)
{
  for (var i=0, l = Math.min(a.length, b.length); i<l & a[i].toLowerCase()==b[i].toLowerCase(); i++);
  return (i==l) ? (a.length-b.length) : (a[i].toLowerCase().charCodeAt(0) - b[i].toLowerCase().charCodeAt(0));
}