function getCookie(NameOfCookie)
{

// First we check to see if there is a cookie stored.
// Otherwise the length of document.cookie would be zero.

if (document.cookie.length > 0)
  {
  // Second we check to see if the cookie's name is stored in the
  // "document.cookie" object for the page.
  
  // Since more than one cookie can be set on a
  // single page it is possible that our cookie
  // is not present, even though the "document.cookie" object
  // is not just an empty text.
  // If our cookie name is not present the value -1 is stored
  // in the variable called "begin".
  
  begin = document.cookie.indexOf(NameOfCookie+"=");
  if (begin != -1) // Note: != means "is not equal to"
    {
    
    // Our cookie was set.
    // The value stored in the cookie is returned from the function.
    
    begin += NameOfCookie.length+1;
    end = document.cookie.indexOf(";", begin);
    if (end == -1) end = document.cookie.length;
    return unescape(document.cookie.substring(begin, end)); }
    }
  return null;
  // Our cookie was not set.
  // The value "null" is returned from the function.
}

function setCookie(NameOfCookie, value, expiredays){
  // Three variables are used to set the new cookie.
  // The name of the cookie, the value to be stored,
  // and finally the number of days until the cookie expires.
  // The first lines in the function convert
  // the number of days to a valid date.
  
  var ExpireDate = new Date ();
  ExpireDate.setTime(ExpireDate.getTime() + (expiredays * 24 * 3600 * 1000));
  
  // The next line stores the cookie, simply by assigning
  // the values to the "document.cookie" object.
  // Note the date is converted to Greenwich Mean time using
  // the "toGMTstring()" function.
  
  document.cookie = NameOfCookie + "=" + escape(value) +
  ((expiredays == null) ? "" : "; expires=" + ExpireDate.toGMTString());
}

function delCookie (NameOfCookie){
  // The function simply checks to see if the cookie is set.
  // If so, the expiration date is set to Jan. 1st 1970.
  if (getCookie(NameOfCookie)) {
    document.cookie = NameOfCookie + "=null" + "; expires=Thu, 01-Jan-70 00:00:01 GMT";
  }
}

function clearCookies(){
  // new search - clear all cookies
  var cookie = document.cookie;
  var cookie_pieces = cookie.split(';');
  for(var i = 0; i < cookie_pieces.length; i++){
    temp = cookie_pieces[i];
    if (temp.search(/couponcard/i) != -1){
      var key = temp.split('=');
      document.cookie = key[0] + '=null; expires=Thu, 01-Jan-70 00:00:01 GMT';
    }
  }               
}