<!--

function getVal (offset) {
  var endstr = document.cookie.indexOf (";", offset);
  if (endstr == -1)
    endstr = document.cookie.length;
  return unescape (document.cookie.substring (offset, endstr));
}

function getCook (name) {
  var arg = name + "=";
  var alen = arg.length;
  var clen = document.cookie.length;
  var i = 0;
  while (i < clen) {
    var j = i + alen;
    if (document.cookie.substring (i, j) == arg)
      return getVal (j);
    i = document.cookie.indexOf (" ", i) + 1;
    if (i == 0) break;
  }
  return null;
}

function isCookieNull (name) {
  return (getCook (name) == null);
}

function areEqualsNotNull (name1, name2) {
  var a = getCook (name1);
  var b = getCook (name2);
  return ((a == b) && (a != null));
}

function areEquals (name1, name2) {
  var a = parseInt (getCook (name1));
  var b = parseInt (getCook (name2));
  return a == b;
}

function incCook (name) {
  var a = getCook (name);
  document.cookie = (a == null) ? (name + "=0;path=/;") : (name + "=" + (parseInt (a) + 1) + ";path=/;")
}

// -->