//  Cookie Functions - Second Helping  (21-Jan-96)
    //
    //  The following changes were made to SetCookie:
    //
    //  1.  The expires parameter is now optional - that is, you can omit
    //      it instead of passing it null to expire the cookie at the end
    //      of the current session.
    //  2.  An optional path parameter has been added.
    //  3.  An optional domain parameter has been added.
    //  4.  An optional secure parameter has been added.
    //
    // "Internal" function to return the decoded value of a cookie
    //
    function getCookieVal (offset) {
      var endstr = document.cookie.indexOf (";", offset);
      if (endstr == -1)
        endstr = document.cookie.length;
      return unescape(document.cookie.substring(offset, endstr));
    }

    //
    //  Function to return the value of the cookie specified by "name".
    //    name - String object containing the cookie name.
    //    returns - String object containing the cookie value, or null if
    //      the cookie does not exist.
    //
    function GetCookie (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 getCookieVal (j);
        i = document.cookie.indexOf(" ", i) + 1;
        if (i == 0) break; 
      }
      return null;
    }

    //
    //  Function to create or update a cookie.
    //    name - String object object containing the cookie name.
    //    value - String object containing the cookie value.  May contain
    //      any valid string characters.
    //    [expires] - Date object containing the expiration data of the cookie.  If
    //      omitted or null, expires the cookie at the end of the current session.
    //    [path] - String object indicating the path for which the cookie is valid.
    //      If omitted or null, uses the path of the calling document.
    //    [domain] - String object indicating the domain for which the cookie is
    //      valid.  If omitted or null, uses the domain of the calling document.
    //    [secure] - Boolean (true/false) value indicating whether cookie transmission
    //      requires a secure channel (HTTPS).  
    //
    //  The first two parameters are required.  The others, if supplied, must
    //  be passed in the order listed above.  To omit an unused optional field,
    //  use null as a place holder.  For example, to call SetCookie using name,
    //  value and path, you would code:
    //
    //      SetCookie ("myCookieName", "myCookieValue", null, "/");
    //
    //  Note that trailing omitted parameters do not require a placeholder.
    //
    //  To set a secure cookie for path "/myPath", that expires after the
    //  current session, you might code:
    //
    //      SetCookie (myCookieVar, cookieValueVar, null, "/myPath", null, true);
    //
    function SetCookie (name, value) {
      var argv = SetCookie.arguments;

      var argc = SetCookie.arguments.length;

      var expires = (argc > 2) ? argv[2] : null;
      var path = (argc > 3) ? argv[3] : null;
      var domain = (argc > 4) ? argv[4] : null;
      var secure = (argc > 5) ? argv[5] : false;
      document.cookie = name + "=" + escape (value) +
        ((expires == null) ? "" : ("; expires=" + expires.toGMTString())) +
        ((path == null) ? "" : ("; path=" + path)) +
        ((domain == null) ? "" : ("; domain=" + domain)) +
        ((secure == true) ? "; secure" : "");
    }

    //  Function to delete a cookie. (Sets expiration date to current date/time)
    //    name - String object containing the cookie name
    //
    function DeleteCookie (name) {
      var exp = new Date();
      exp.setTime (exp.getTime() - 1);  // This cookie is history
      var cval = GetCookie (name);
      document.cookie = name + "=" + cval + "; expires=" + exp.toGMTString();
    }

//----------------------------------------------------------------------------------------------------------------------------------------------------------------

function dk_set(id_tovar) {
  var addOK = false;
  var expdate    = new Date();  
  expdate.setTime(expdate.getTime() + (60 * 60 * 1000));

  var DKZakazArr = new Array();
  var DKKolvoArr = new Array();
  var ZakazString = GetCookie('DKZakaz[]');
  var KolvoString = GetCookie('DKKolvo[]');
  var zakaz_index;
  var new_kolvo = FormZakaz.item("kolvo"+id_tovar.toString()).value;
  
  if (ZakazString == null) {
    zakaz_index=0;
  } else {
    DKZakazArr = ZakazString.split(',');
    DKKolvoArr = KolvoString.split(',');
    zakaz_index = DKZakazArr.length;
    for(i=0;i<DKZakazArr.length; i++) {
	  if (DKZakazArr[i]==id_tovar) {
	    DKKolvoArr[i] = DKKolvoArr[i]*1 + new_kolvo*1;
		addOK = true;
	  }
	}

  }

  if (!addOK) {
    DKZakazArr[zakaz_index] = id_tovar;
    DKKolvoArr[zakaz_index] = new_kolvo;
  }

  SetCookie('DKZakaz[]', DKZakazArr, expdate);  
  SetCookie('DKKolvo[]', DKKolvoArr, expdate);  
  msgtxt = "В корзину добавлен(а) " + new_kolvo.toString() + " " + document.all.item("descr"+id_tovar.toString()).innerHTML;  
  alert(msgtxt);
  return false; 
}

function dk_get() {
  var DKZakazArr = new Array();
  var DKKolvoArr = new Array();
  var ZakazString = GetCookie('DKZakaz[]');
  var KolvoString = GetCookie('DKKolvo[]');

  DKZakazArr = ZakazString.split(',');
  DKKolvoArr = KolvoString.split(',');

  for(i=0;i<DKZakazArr.length; i++) {
    tempStr = DKZakazArr[i] + '   ' + DKKolvoArr[i];
  }
}

function dk_get_zakaz() {
  var ZakazString = GetCookie('DKZakaz[]');
  return ZakazString;
}

function dk_get_kolvo() {
  var KolvoString = GetCookie('DKKolvo[]');
  return KolvoString;
}

function dk_clear() {
  DeleteCookie('DKZakaz[]');
  DeleteCookie('DKKolvo[]');
}

function ShowBinHead()
{
  var tmp_zakaz = dk_get_zakaz();
  var tmp_kolvo = dk_get_kolvo();
  document.forms["FormShowBinHead"].kolvo.value = tmp_kolvo;
  document.forms["FormShowBinHead"].zakaz.value = tmp_zakaz;
  document.forms["FormShowBinHead"].submit();
  return 0;
}