// Copyright (c) 1996-1997 Tomer Shiran. All rights reserved.
// Permission given to use the script provided that this notice remains as is.
// Additional scripts can be found at http://www.geocities.com/~yehuda/

// Boolean variable specified if alert should be displayed if cookie exceeds 4KB
var caution = false

// *** setCookie
// name - name of the cookie
// value - value of the cookie
// [expires] - expiration date of the cookie (defaults to end of current session)
// [path] - path for which the cookie is valid (defaults to path of calling document)
// [domain] - domain for which the cookie is valid (defaults to domain of calling document)
// [secure] - Boolean value indicating if the cookie transmission requires a secure transmission
// * an argument defaults when it is assigned null as a placeholder
// * a null placeholder is not required for trailing omitted arguments
function setCookie(name, value, expires, path, domain, secure) {
	var curCookie = name + "=" + escape(value) +
		((expires) ? "; expires=" + expires.toGMTString() : "") +
		((path) ? "; path=" + path : "") +
		((domain) ? "; domain=" + domain : "") +
		((secure) ? "; secure" : "");
	if (!caution || (name + "=" + escape(value)).length <= 4000)
		document.cookie = curCookie;
	else
		if (confirm("Cookie exceeds 4KB and will be cut!"));
	document.cookie = curCookie;
}

// *** getCookie
// name - name of the desired cookie
// * return string containing value of specified cookie or null if cookie does not exist
function getCookie(name) {
	var prefix = name + "="
	var cookieStartIndex = document.cookie.indexOf(prefix)
	if (cookieStartIndex == -1)
		return null;
	var cookieEndIndex = document.cookie.indexOf(";", cookieStartIndex + prefix.length);
	if (cookieEndIndex == -1)
		cookieEndIndex = document.cookie.length;
	return unescape(document.cookie.substring(cookieStartIndex + prefix.length, cookieEndIndex));
}

// *** fixDate
// date - any instance of the Date object
// * you should hand all instances of the Date object to this function for "repairs"
// * this function is taken from Chapter 14, "Time and Date in JavaScript", in "Learn Advanced JavaScript Programming"
function fixDate(date) {
	var base = new Date(0)
	var skew = base.getTime()
	if (skew > 0)
		date.setTime(date.getTime() - skew);
}