function cookie_writeCookie(name, value){
    var argv=cookie_writeCookie.arguments;
    var argc=cookie_writeCookie.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 cookie_getCookieVal(offset){
    var endstr=document.cookie.indexOf (";", offset);
    if (endstr==-1) endstr=document.cookie.length;
        return unescape(document.cookie.substring(offset, endstr));
}

function cookie_readCookie(name){
    value=""
    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 cookie_getCookieVal(j);
            value= cookie_getCookieVal(j);
        }
        i=document.cookie.indexOf(" ",i)+1;
        if (i==0) 
            break;
    }
    return value;
}