function pagevm_ext_ajax_request(url, params, context, response_func, response_obj, method )
{
    if(method==null) method='POST';
    var return_response = function(success, response, opts)
    {
            var resJson = '';
            try {
              resJson=Ext.util.JSON.decode(response.responseText);
            } catch (exception) { }
            var result = {response: response, raw : response.responseText, json : resJson, opts : opts };

            if(response_func != null)
            {
                if (response_obj==null) window[response_func](success, result);
                else response_obj[response_func](success, result);
            }
    };
    Ext.Ajax.request({
        //waitMsg: 'Выполняется запрос',
        url: url,
        params: params,
        context : context,
        success: function(response, opts) { return_response(true, response, opts) },
        failure: function(response, opts) { return_response(false, response, opts) }
    })

}