Получить значение cookie

function getCookie(name)
{
var name += "=";

if (document.cookie.length > 0)
{
var start = document.cookie.indexOf(name) ;

if (start >= 0)
{
start += name.length;
end = document.cookie.indexOf(";", start);

if (end < 0) end = document.cookie.length;

return unescape(document.cookie.substring(start, end));
}
}
}