var caution = false

// 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 превышает 4KB и будет вырезан !"))
			document.cookie = curCookie

};

// 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))

};

function eraseCookie(name) {
	setCookie(name,"",0);
};