var dataNum = 0;
var setRepeat;
var jsonData = new Array();
var request = null;

function startGetMarquee(){
	try {
	  request = new XMLHttpRequest();
	} catch (trymicrosoft) {
	  try {
		request = new ActiveXObject("Msxml2.XMLHTTP");
	  } catch (othermicrosoft) {
		try {
		  request = new ActiveXObject("Microsoft.XMLHTTP");
		} catch (failed) {
		  request = null;
		}
	  }
	}
	var url = "/babypeer/PUBLIC_MODULE/GET_BULLETIN.php";
	request.open("POST", url, true);
	request.onreadystatechange = updatePage;
	request.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
	request.send("from=index");
}

function updatePage(){
  if (request.readyState == 4) {
    if (request.status == 200) {
      jsonData = eval('(' + request.responseText + ')');
	  if(jsonData.length > 0){
		  //先將loading的圖示拿掉
		  //document.getElementById('loading').style.display = 'none';
		  //load資料
		  if(jsonData.length > 1){
			  document.getElementById('BULLETIN_CON1').innerHTML = jsonData[0];
			  dataNum++;
			  setRepeat = window.setInterval(chgBulletin,5000);
	  	  }else{  //jsonData.length == 1
			  document.getElementById('BULLETIN_CON1').onmouseover = 'undefined';
			  document.getElementById('BULLETIN_CON1').onmouseout = 'undefined';
			  document.getElementById('BULLETIN_CON1').innerHTML = jsonData[dataNum];
			  dataNum++;
		  }
	  }
    }else{
      var message = request.getResponseHeader("Status");
      if ((message == null) )
        alert("Error! Request status is " + request.status);
      else
        alert(message);
    }
  }
}

function chgBulletin(){
  if(dataNum < jsonData.length){
    document.getElementById('BULLETIN_CON1').innerHTML = jsonData[dataNum];
	dataNum++;
  }else{
	 dataNum = 0 ; 
	 document.getElementById('BULLETIN_CON1').innerHTML = jsonData[0];
	 dataNum++;
  }
}