function getCookie(name) {
  var dc = document.cookie;
  var prefix = name + "=";
  var begin = dc.indexOf("; " + prefix);
  if (begin == -1) {
    begin = dc.indexOf(prefix);
    if (begin != 0) return null;
  } else
    begin += 2;
  var end = document.cookie.indexOf(";", begin);
  if (end == -1)
    end = dc.length;
  return unescape(dc.substring(begin + prefix.length, end));
}

function getYamCookieValue(cookie , name) {
	var prefix = name+"=";
	var begin = cookie.indexOf("&"+prefix);
	if(begin == -1 ){
		begin = cookie.indexOf(prefix);
		if(begin !=0 ) return '' ;
	}else{
		begin +=2 ;
	}
	var end = cookie.indexOf("&",begin);
	if(end == -1){
		end = cookie.length ;
	}
	return unescape(cookie.substring(begin+prefix.length,end));
}

var yam_id = '' ;

co_member = getCookie('co_member');
if(co_member!=null){
	yam_id = getYamCookieValue(co_member,'ID');
}

showCommentForm();


function readCookies() {
	var theForm = document.forms['NewComment'];
	if(theForm!='' && typeof(yam_email)!='undefined' && typeof(yam_nick)!='undefined'){
		theForm.userEmail.value = yam_email ;
		theForm.userName.value = yam_nick ;
		theForm.yamId.value = yam_id ;
	}
}

function checkLogin(f){
	if(typeof(yam_id)=='undefined' || yam_id=="" ){
		if(confirm("尚未登入蕃薯藤會員，請問您現在要登入嗎?")){
			var url = location.href ;
			location.href = "http://member.yam.com/index.php?url="+url ;
			return false ;
		}else{
			return true ;
		}
	}
}

function showCommentForm(){
	if(typeof(yam_id)=='undefined' || yam_id=="" ){
		document.getElementById('loginFormDiv').style.display = "block" ; 
		document.getElementById('commentFormDiv').style.display = "none" ; 
	}else{
		document.getElementById('loginFormDiv').style.display = "none" ;  
        document.getElementById('commentFormDiv').style.display = "block" ; 

		//load user data
		var memberblock = '<scr' + 'ipt language="JavaScript" type="text/javascript" ';
		var rn = Math.floor(Math.random()*1000);
		memberblock += 'src="http://hercafe.yam.com/blog/yamCookie.php?n=' + rn;
		memberblock += '">';
		memberblock += '<\/';
		memberblock += 'scr' + 'ipt>';

		document.write(memberblock);
		setTimeout("readCookies()", 3000);
	}
}

function loginYam(){
	var url = location.href ;
    location.href = "http://hercafe.yam.com/Membership/login.aspx?cid=HERCAFE&fields=DEFAULT&url="+url ;
}

function alertModerate(){
	alert("回應已成功送出，待審核中");
}