function getCookie(name) {
    var pairs = document.cookie.split("; ");
    for (i = 0; i < pairs.length; i++) {
        pair = pairs[ i ].split("=");
        if (pair[ 0 ] == name) {
            var val  = pair[ 1 ];
            var type = typeof( val );
            if( !type.match( /^string$/ ) ) val = "";
            return unescape(val);
        }
    }
    return "";
}

function setCookie(name, value) {
    document.cookie = name+"="+escape(value)+"; path=/";
}

function deleteCookie(name) {
    document.cookie = name+"=; path=/; expires=Thu, 01-Jan-1970 00:00:01 GMT";
}

function cookiesEnabled(name) {
    setCookie(name, 1);
    var t = getCookie(name);
    deleteCookie(name);
    return t;
}