method getAllResponseHeaders

    var request = shell.serviceManager.maxiXML.xmlHTTPRequest;
    request.open("GET","http://aol.musicnow.com/rss/genre/");
    request.onreadystatechange = function()
    {
        if(request.readyState == 4)
        {
            var headers = request.getAllResponseHeaders();
            var contentType;
            var cookieVal;
            var enumerator = headers.getEnumerator();
            while(headers.moveNext())
            {
                var currentHeader = headers.getCurrent();
                if(currentHeader.valueForKey("header") = "Content-Type")
                {
                    contentType = currentHeader.valueForKey("value");
                } 
                else if(currentHeader.valueForKey("header") = "Cookie")
                {
                    cookieVal = currentHeader.valueForKey("value");
                }
            }
        }                        
    }

    request.send("");