[js]轻便的XMLHttpRequest应用函数：downloadUrl()

;      break;
            }
            catch(e)
            {
            }
        }
    }

    // send request
    with(objXMLHttpRequest)
    {
        //setTimeouts(30*1000,30*1000,30*1000,30*60*1000);
        try
        {
            open(method, url, true);

            if (method == ''POST'')
            {
                setRequestHeader(''Content-Type'', ''application/x-www-form-urlencoded; charset=UTF-8'');
            }

            send(data);
        }
        catch(e)
        {
            alert(e);
        }

        // on ready
        onreadystatechange = function()
        {
            if (objXMLHttpRequest.readyState == 4)
            {
                callback(objXMLHttpRequest.responseText, objXMLHttpRequest.status);
                delete(objXMLHttpRequest);
            }
        }
    }
}