// JavaScript Document
var xmlHttp;
function createXMLHttpRequest(){
	if(window.ActiveXObject){
	   xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
	}else if(window.XMLHttpRequest){
	   xmlHttp = new XMLHttpRequest();
	}
}
function createQueryString(){
	var articleid = document.getElementById("articleid").value;
	var username = document.getElementById("username").value;
	var snsgroupid = document.getElementById("snsgroupid").value;
	var message = document.getElementById("message").value;
	var queryString = "articleid="+articleid + "&username="+username + "&snsgroupid="+snsgroupid + "&message="+message;
	return queryString;
}
//function doRequestGet(){
//	createXMLHttpRequest();
//	var queryString = "/comment/do.php?";
//	queryString = queryString+createQueryString();	
//	xmlHttp.onreadystatechange = handlestatechange;
//	xmlHttp.open("GET",queryString,true);
//	xmlHttp.send(null);
//}
function doRequestPost(){
	createXMLHttpRequest();
	var url = "/comment/do.php?";
	var queryString = createQueryString();
	xmlHttp.open("POST",url,true);
	xmlHttp.onreadystatechange = handlestatechange;
	xmlHttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
	xmlHttp.send(queryString);
}
function handlestatechange(){
	var responseDiv=document.getElementById("pinglun_main");
	if(xmlHttp.readyState == 4){
	   if(xmlHttp.status == 200){ 
	     responseDiv.innerHTML = xmlHttp.responseText;
	   }else{
	     responseDiv.innerHTML = xmlHttp.statusText;
	   }
	}else{
	   responseDiv.innerHTML = "正在提交数据...";
	}
}


function checkmessage(issubmit){
	var mess=document.getElementById('message').value;
	if(mess.length<5){
		alert('您输入的评论太短。');
		return false;
	}else{
		if(mess.length>2000){
			alert('您输入的评论超出了最大限制。');	
			return false;
		}else{
			if(issubmit){
				doRequestPost();
				return true;
			}
		}
	}		
}

function checknoname(){
	var noname=document.getElementById('noname');
	var havename=document.getElementById('snsusername');
	if(noname.checked==true && noname){
		document.getElementById('username').value='逍客网友';	
	}else{
		document.getElementById('username').value=havename.value?havename.value:'';
	}
}
function getSnsUser(){
	var hiu=document.getElementById('snsusername');
	if(hiu){
		document.getElementById('username').value=hiu.value?hiu.value:'';
	}
}
function messagenull(){
	document.getElementById('message').value='';	
}
function getquote(id){
	var qid=document.getElementById('quote_'+id);
	if(qid){
		//document.getElementById('message').value=qid.value;
		alert('引用成功，请继续进行评论！');
		document.getElementById('message').focus();
		document.getElementById('quotecontent').value=qid.value;
	}
}