var setFlag = false;
var stringFav = '';
var http_request = false;
function forum_setFavorite()
{
  o = document.getElementById('favorite');
  bb = document.getElementById('b');

  if( '' == o.innerHTML ){
    o.innerHTML = stringFav;
    bb.value="關閉我曾訂閱的看板";
  }
  else{
    o.innerHTML = '';
    bb.value="顯示我曾訂閱的看板";
  }
}


function forum_makeRequest(url) {
    if( setFlag ){
      forum_setFavorite();
      return;
    }

    setFlag = true;

    //判斷瀏覽器建立XMLHTTP實體
    if (window.XMLHttpRequest) { // Mozilla, Safari,...
	http_request = new XMLHttpRequest();
	if (http_request.overrideMimeType) {
	    http_request.overrideMimeType('text/html');
	}
    } else if (window.ActiveXObject) { // IE
	try {
	    http_request = new ActiveXObject("Msxml2.XMLHTTP");
	} catch (e) {
	    try {
		http_request = new ActiveXObject("Microsoft.XMLHTTP");
	    } catch (e) {}
	} finally {
    	    //http_request.SetRequestHeader("Content-Type", "text/xml;charset=big5");
    	} 
    }

    if (!http_request) {
	alert('資料查詢失敗！');
	return false;
    }

    http_request.onreadystatechange = forum_setContents;

    //開啟http request
    http_request.open('GET', 'http://forum.gamer.com.tw/getFavorites.php' , true);
    //http_request.SetRequestHeader("Content-Type", "text/xml;charset=big5");
    http_request.send(null);
}

//Text格式
function forum_setContents() {
    if (http_request.readyState == 4) {
	if (http_request.status == 200) {
	    stringFav = http_request.responseText;
            forum_setFavorite();
	} else {
	    alert('資料查詢失敗！');
	}
    }
}