Tryag File Manager

/home/nonga.eemo.co.kr/public_html/www/chat_room_comin_new.php

<?
session_cache_limiter('no-cache, must-revalidate');
session_start();

header("Pragma: no-cache");   
header("Cache-Control: no-cache,must-revalidate");   
header("Content-Type: text/html; charset=utf-8");

include_once("dbconn.php");
include_once("lib.php");

foreach($_GET as $key => $value) {
	${$key}=mysql_real_escape_string(trim($value));
}

foreach($_POST as $key => $value) {
	${$key}=mysql_real_escape_string(trim($value));
}

$rs_my=RS("select * from member where no='{$_COOKIE[umem_no]}' ");

if($rs_my[mtype]==1 || $rs_my[mtype]==2) {
	$rs_farm=RS("select * from farm where no='{$rs_my[farm_no]}' ");

$farm_code=$rs_farm[farm_code];
}

$rs_farm=RS("select * from farm where farm_code='$farm_code' ");

$farm_no=$rs_farm[no];

$arr_room=array();
		
// API 회원등록	
$token="nongadid2013";  //api 로부터 부여받은 접근 토큰키값

$arr   = array();
$arr['token']=$token;  //생성할 아이디
$arr['user_id']=$rs_my[id];  //생성할 아이디
$arr['user_nick']=$rs_my[name];  //생성할 닉네임
$arr['user_img']="http://brtalk.eemo.co.kr/assets/chat_noticon.png";  //생성할 닉네임

$json_enc=json_encode($arr);

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL,    'https://bitbus.eemo.co.kr/bridge/api_adduser.php');
curl_setopt($ch, CURLOPT_HTTPHEADER,   array("Content-type: application/x-www-form-urlencoded"));
curl_setopt($ch, CURLOPT_POST,    true);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POSTFIELDS,$json_enc);
curl_setopt($ch, CURLOPT_TIMEOUT, 30); // TimeOut 값

$response = curl_exec($ch);

//echo $response;

$json_dec=json_decode($response);

curl_close($ch);
// "response" : "wrong_token" , "rst" : "잘못된 토큰입니다."
// "response" : "1" , "rst" : "success", "mqtt_id" : "adcd", "mqtt_pass" : "12312312"

$mqtt_id=$json_dec->mqtt_id;
//--API 회원정보

$arr   = array();
$arr['token']=$token;  
$arr['room_no']=$room_no;  
$json_enc=json_encode($arr);

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL,    'https://bitbus.eemo.co.kr/bridge/api_room_info.php');
curl_setopt($ch, CURLOPT_HTTPHEADER,   array("Content-type: application/x-www-form-urlencoded"));
curl_setopt($ch, CURLOPT_POST,    true);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POSTFIELDS,$json_enc);
curl_setopt($ch, CURLOPT_TIMEOUT, 30); // TimeOut 값

$response = curl_exec($ch);

//echo $response;

$json_dec=json_decode($response);

curl_close($ch);

//"response":"1","rst":"success","room_no":"2","room_name":"달려라 지오아이디","room_limit":"5","room_pass":"1234","user_id":"sjlee@zoit.co.kr"

$arr   = array();
$arr['token']=$token;  
$arr['room_no']=$room_no;  
$arr['mqtt_id']=$mqtt_id;  
$json_enc=json_encode($arr);

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL,    'https://bitbus.eemo.co.kr/bridge/api_room_chat_log.php');
curl_setopt($ch, CURLOPT_HTTPHEADER,   array("Content-type: application/x-www-form-urlencoded"));
curl_setopt($ch, CURLOPT_POST,    true);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POSTFIELDS,$json_enc);
curl_setopt($ch, CURLOPT_TIMEOUT, 30); // TimeOut 값

$response = curl_exec($ch);

//echo $response;

$json_dec2=json_decode($response);

curl_close($ch);

?>
<!DOCTYPE html>

<link rel="stylesheet" href="assets/vendor/fonts/fontawesome.css">
  <link rel="stylesheet" href="assets/vendor/fonts/ionicons.css">
  <link rel="stylesheet" href="assets/vendor/fonts/linearicons.css">
  <link rel="stylesheet" href="assets/vendor/fonts/open-iconic.css">
  <link rel="stylesheet" href="assets/vendor/fonts/pe-icon-7-stroke.css">

<link rel="stylesheet" href="assets/vendor/css/rtl/bootstrap.css" class="theme-settings-bootstrap-css">
  <link rel="stylesheet" href="assets/vendor/css/rtl/appwork.css" class="theme-settings-appwork-css">
  <link rel="stylesheet" href="assets/vendor/css/rtl/theme-corporate.css" class="theme-settings-theme-css">
  <link rel="stylesheet" href="assets/vendor/css/rtl/colors.css" class="theme-settings-colors-css">
  <link rel="stylesheet" href="assets/vendor/css/rtl/uikit.css">
  <link rel="stylesheet" href="assets/css/demo.css">

<script src="assets/vendor/js/pace.js"></script>
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>

<link rel="stylesheet" href="assets/vendor/libs/perfect-scrollbar/perfect-scrollbar.css">
  <link rel="stylesheet" href="assets/vendor/libs/bootstrap-datepicker/bootstrap-datepicker.css">

</head>

<div class="layout-wrapper layout-2">
    <div class="layout-inner">

<?include_once("inc_sidenav.php");?>

<div class="layout-container">
        
        <?include_once("inc_navbar.php");?>

<div class="layout-content">

<div class="container-fluid d-flex align-items-stretch flex-grow-1 p-0">

<div class="chat-wrapper container-p-x container-p-y">

<div class="card flex-grow-1 position-relative overflow-hidden">

<div class="row no-gutters h-100">
                  <div class="chat-sidebox col">

<div class="flex-grow-0 px-4">
                      <div class="media align-items-center">
                        <div class="media-body">
                          <input type="text" class="form-control chat-search my-3" placeholder="Search...">
                        </div>
                        <a href="javascript:void(0)" class="chat-sidebox-toggler d-lg-none d-block text-muted text-large font-weight-light pl-3">&times;</a>
                      </div>
                      <hr class="border-light m-0">
                    </div>

<div class="flex-grow-1 position-relative">
                      <div class="chat-contacts list-group chat-scroll py-3" id='dv_connlist'>

</div>
                    </div>

</div>
                  <div class="d-flex col flex-column">

<div class="flex-grow-0 py-3 pr-4 pl-lg-4">

</div>
                    <hr class="flex-grow-0 border-light m-0">

<div class="flex-grow-1 position-relative">

<div class="chat-messages chat-scroll p-4" id='dv_chat'>

<?
					  foreach($json_dec2->logs as $bk => $bv) {
							if($bv->vv_mode=='send' && $bv->vv2_mode=='msg') {
								?>
								<div class="chat-message-right mb-4">
								  <div>
									<img src="assets/img/avatars/1-small.png" class="ui-w-40 rounded-circle" alt>
									<div class="text-muted small text-nowrap mt-2"><?=date('H:i:s',strtotime($bv->rdate))?></div>
								  </div>
								  <div class="flex-shrink-1 bg-lighter rounded py-2 px-3 mr-3">
									<div class="font-weight-semibold mb-1"><b>나</b></div>
									<?=$bv->message?>
								  </div>
								</div>
								<?
							} else if($bv->vv_mode=='rcv' && $bv->vv2_mode=='msg') {
								?>
								<div class="chat-message-left mb-4">
								  <div>
									<img src="assets/img/avatars/4-small.png" class="ui-w-40 rounded-circle" alt>
									<div class="text-muted small text-nowrap mt-2"><?=date('H:i:s',strtotime($bv->rdate))?></div>
								  </div>
								  <div class="flex-shrink-1 bg-lighter rounded py-2 px-3 ml-3">
									<div class="font-weight-semibold mb-1"><b><?=$bv->from_user_nick?></b></div>
									<?=$bv->message?>
								  </div>
								</div>
								<?
							}
					  }
					  ?>

</div>
                    </div>

<hr class="border-light m-0">
                    <div class="flex-grow-0 py-3 px-4">
                      <div class="input-group">
                        <input type="text" class="form-control" placeholder="Type your message" id="pub_message" onkeyup="fn_message()">
                        <div class="input-group-append">
                          <button type="button" class="btn btn-primary" onclick="fn_send()">Send</button>
                        </div>
                      </div>
                    </div>

</div>
                </div>

</div>

</div>

</div>

<?include_once("inc_footer.php");?>

</div>

</div>

</div>

<div class="layout-overlay layout-sidenav-toggle"></div>
  </div>

<script src="assets/vendor/libs/popper/popper.js"></script>
  <script src="assets/vendor/js/bootstrap.js"></script>
  <script src="assets/vendor/js/sidenav.js"></script>

<script src="assets/vendor/libs/perfect-scrollbar/perfect-scrollbar.js"></script>

<script src="assets/js/demo.js"></script>

</body>

</html>

var arr_chatmem=new Array();

var sel_mem = { };
function fn_selmem(topic,nick) {
	$('#pub_message').val("#"+nick+" ");
	sel_mem.topic=topic;
}

function fn_message() {
	
	if($('#pub_message').val()=='') {
		sel_mem.topic='';
	} else if($('#pub_message').val().substr(0,1)=='#') {
		var is_is=false;

for (var k in arr_chatmem) {
			//alert(arr_chatmem[k].nick);
			if($('#pub_message').val().startsWith('#'+arr_chatmem[k].nick)) {
				sel_mem.topic=arr_chatmem[k].topic;
				//alert(sel_mem.topic);
				is_is=true;
			}
		}
		if(is_is==false) {
			sel_mem.topic='';
		}
	}
		
	console.log(sel_mem.topic);
}

var mqtt;
    var reconnectTimeout = 2000;

var host = 'bitbus.eemo.co.kr';	// hostname or IP address

var port = 9001;
	var topic = '<?=$token?>/<?=$json_dec->room_no?>/<?=$mqtt_id?>';		// topic to subscribe to
	var useTLS = false;
	var username = '<?=$json_dec->room_mqtt_id?>';
	var password = '<?=$json_dec->room_mqtt_pw?>';
	var cleansession = true;

var vv_send_msg='';
	var vv_send_idx=0;

mqtt.onConnectionLost = onConnectionLost;
        mqtt.onMessageArrived = onMessageArrived;

if (username != null) {
            options.userName = username;
            options.password = password;
        }
        console.log("Host="+ host + ", port=" + port + ", path=" + path + " TLS = " + useTLS + " username=" + username + " password=" + password);
        mqtt.connect(options);
    }

function onConnect() {
        
        mqtt.subscribe(topic, {qos: 0});
		$('#chat_list').append('<div class="media p-l-5"><div class="media-body"><small class="text-muted">' + ShowUTCDate() + '<a class="t-overflow" href="">접속되었습니다.</a></div></div>');

var json_data = { };
		json_data.from = '<?=$token?>/<?=$json_dec->room_no?>/<?=$mqtt_id?>';
		json_data.to = 'all';
		json_data.room_no = '<?=$json_dec->room_no?>';
		json_data.mode = 'chat_conn';

var send_data = JSON.stringify(json_data);

message = new Paho.MQTT.Message(send_data);
        message.destinationName = "pub/<?=$token?>/<?=$json_dec->room_no?>";
        mqtt.send(message);

setInterval(function(){ 
			var json_data = { };
			json_data.from = '<?=$token?>/<?=$json_dec->room_no?>/<?=$mqtt_id?>';
			json_data.from_nick = '<?=$rs_my[name]?>';
			json_data.from_id = '<?=$rs_my[id]?>';
			json_data.from_img = 'http://brtalk.eemo.co.kr/assets/chat_noticon.png';
			json_data.to = 'all';
			json_data.room_no = '<?=$json_dec->room_no?>';
			json_data.mode = 'chat_conn';

var send_data = JSON.stringify(json_data);

message = new Paho.MQTT.Message(send_data);
			message.destinationName = "pub/<?=$token?>/<?=$json_dec->room_no?>";
			mqtt.send(message);
		}, 2000);
    }

function onConnectionLost(response) {
        setTimeout(MQTTconnect, reconnectTimeout);
        //$('#status').val("connection lost: " + responseObject.errorMessage + ". Reconnecting");
		$('#chat_list').append('<div class="media p-l-5"><div class="media-body"><small class="text-muted">' + ShowUTCDate() + '<a class="t-overflow" href="">'+responseObject.errorMessage+'</a></div></div>');

};

function onMessageArrived(message) {

var topic = message.destinationName;
        var payload = message.payloadString;

//$('#ws').prepend('<li>' + topic + ' = ' + payload + '</li>');
		//alert(payload.type);
		//alert(payload);
		console.log(payload);

var obj = JSON.parse(payload);
		
		if(obj.type=='connect_su') {
			$('#sp_memsu').text(obj.connsu);

$("#dv_connlist").empty();
			var vv='';
			obj.connlist.forEach((val, index) => {
				//alert(val.nick);
				if(val.nick) {
					//$('#dv_connlist').append("<li id='li_"+val.topic+"' style='color:#000'><a onclick=\"fn_selmem('"+val.topic+"' , '"+val.nick+"')\">"+val.nick+"</a></li>");
					vv+=
						'<a href="javascript:void(0)" class="list-group-item list-group-item-action online">'+
                          '<img src="'+val.img+'" class="d-block ui-w-40 rounded-circle" alt="">'+
                          '<div class="media-body ml-3">'+
                            val.nick+
                            '<div class="chat-status small"><span class="badge badge-dot"></span>&nbsp; Online</div>'+
                          '</div>'+
                          
                        '</a>';
					//alert(vv);
					
				}
			});

//alert(vv);
			
			$("#dv_connlist").html(vv);

} else if(obj.type=='connect_list') {
			obj.connlist.forEach((val, index) => {
				//alert(val.tel);
				if(val.isconn=='1') {
					$('#'+val.tel).text('접속');
				} else {
					$('#'+val.tel).text('');
				}
			});
		} else if(obj.type=='receive_msg') {
			
			var str=
				'<div class="chat-message-left mb-4">'+
				  '<div>'+
					'<img src="'+decodeURI(obj.from_user_img)+'" class="ui-w-40 rounded-circle" alt>'+
					'<div class="text-muted small text-nowrap mt-2">'+obj.datetime+'</div>'+
				  '</div>'+
				  '<div class="flex-shrink-1 bg-lighter rounded py-2 px-3 ml-3">'+
					'<div class="font-weight-semibold mb-1"><b>'+decodeURI(obj.from_user_nick)+'</b></div>'+
					decodeURI(obj.message)+
				  '</div>'+
				'</div>';

$('#dv_chat').append(str);

$('#dv_chat').scrollTop($('#dv_chat')[0].scrollHeight);
		} else if(obj.type=='send_response') {
			if(obj.idx==vv_send_idx) {
				
				/*
				$('#chat_list').append('<div class="media p-l-5"><div class="media-body"><small class="text-muted">Send : ' + ShowUTCDate() + '<a class="t-overflow" href="">'+vv_send_msg+'</a></div></div>');

$('#pub_message').val("");
				$('#chat_list').scrollTop($('#chat_list')[0].scrollHeight);
				$('#pub_message').focus();
				*/

var str=''+
				
				'<div class="chat-message-right mb-4">'+
				  '<div>'+
					'<img src="assets/img/avatars/1-small.png" class="ui-w-40 rounded-circle" alt>'+
					'<div class="text-muted small text-nowrap mt-2">'+obj.datetime+'</div>'+
				  '</div>'+
				  '<div class="flex-shrink-1 bg-lighter rounded py-2 px-3 mr-3">'+
					'<div class="font-weight-semibold mb-1"><b>나</b></div>'+
					vv_send_msg+
				  '</div>'+
				'</div>';

$('#dv_chat').append(str);
				$('#pub_message').val("");
				$('#dv_chat').scrollTop($('#dv_chat')[0].scrollHeight);
				$('#pub_message').blur();

}
		} else if(obj.type=='receive_files') {

var str='<div class="widget-chat-item with-media left" style="margin-right:100px">'+
						'<div class="widget-chat-media">'+
							'<img alt="" src="'+decodeURI(obj.from_user_img)+'" />'+
						'</div>'+
						'<div class="widget-chat-info">'+
							'<div class="widget-chat-info-container">'+
								'<div class="widget-chat-name text-black-darker" style="margin-bottom:5px">'+decodeURI(obj.from_user_nick)+'</div>'+
								'<div class="widget-chat-message">';

obj.files.forEach((val2, index) => {

if(val2.type=='image') {
										str+='<div class="alert alert-warning fade show" style="padding:0;background:transparent">'+
												'<div class="row" style="margin:0px 0px 10px 0px">'+
													'<img alt="" src="'+decodeURI(val2.link_url)+'" onclick="location.href=\''+val2.down_url+'\'" download  class="widget-card-cover width-full height-full" style="margin:0" />'+
												'</div>'+
											'</div>';
									} else {
										str+=''+
											'<div class="alert alert-warning fade show">'+
												'<a href="'+val2.down_url+'" style="color:#ffff00" download >'+decodeURI(val2.org_name)+'</a><br>'+
												'유효기간 : ~ '+val2.limit_date+'<br>'+
												'용량 : '+val2.file_size+'<br>'+
												'<a href="'+val2.down_url+'" class="btn btn-primary btn-xs" download >다운받기</a>'+
											'</div>';
										
									}
									
								});
								str+='</div>'+
								'<div class="widget-chat-time">'+obj.datetime+'</div>'+
							'</div>'+
						'</div>'+
					'</div>';

$('#dv_chat').append(str);

setTimeout(function(){ 
				$('#dv_chat').scrollTop($('#dv_chat')[0].scrollHeight);
			}, 300);

} else if(obj.type=='send_response_files') {

if(obj.idx==vv_send_idx) {
								
				
				var str='<div class="widget-chat-item with-media right" style="margin-left:100px;margin-right:-55px">'+
							'<div class="widget-chat-info">'+
								'<div class="widget-chat-info-container">'+
									'<div class="widget-chat-name text-black-darker" style="margin-bottom:5px"><?=$rs_mem[nick]?></div>'+
									'<div class="widget-chat-message">';

obj.files.forEach((val2, index) => {

if(val2.type=='image') {
											str+='<div class="alert alert-warning fade show" style="padding:0;background:transparent">'+
													'<div class="row" style="margin:0px 0px 10px 0px">'+
														'<img alt="" src="'+decodeURI(val2.link_url)+'" onclick="location.href=\''+val2.down_url+'\'" download  class="widget-card-cover width-full height-full" style="margin:0" />'+
													'</div>'+
												'</div>';
										} else {
											str+=''+
												'<div class="alert alert-warning fade show">'+
													'<a href="'+val2.down_url+'" style="color:#ffff00" download >'+decodeURI(val2.org_name)+'</a><br>'+
													'유효기간 : ~ '+val2.limit_date+'<br>'+
													'용량 : '+val2.file_size+'<br>'+
													'<a href="'+val2.down_url+'"  class="btn btn-primary btn-xs" download>다운받기</a>'+
												'</div>';
											
										}
										
									});
									str+='</div>'+
									'<div class="widget-chat-time">'+obj.datetime+'</div>'+
								'</div>'+
							'</div>'+
						'</div>';

$('#dv_chat').append(str);

setTimeout(function(){ 
					$('#dv_chat').scrollTop($('#dv_chat')[0].scrollHeight);
				}, 300);
			}
		}
    };

$(document).ready(function() {
        MQTTconnect();
    });

function fn_send() {

var is_is=false;

for (var k in arr_chatmem) {
			if($('#pub_message').val().startsWith('#'+arr_chatmem[k].nick)) {
				sel_mem.topic=arr_chatmem[k].topic;
				is_is=true;
			}
		}
		if(is_is==false) {
			sel_mem.topic='';
		}

var to_msq=$('#pub_message').val();

if(to_msq=='') {
			//alert('Insert Topic Or Message !! ');
			return;
		}

vv_send_idx++;

var send_data = JSON.stringify(json_data);

message = new Paho.MQTT.Message(send_data);
        message.destinationName = "pub/<?=$token?>/<?=$json_dec->room_no?>";
        mqtt.send(message);
		
		
		vv_send_msg=to_msq;

/*
		$('#chat_list').append('<div class="media p-l-5"><div class="media-body"><small class="text-muted">Send : ' + ShowUTCDate() + '<a class="t-overflow" href="">'+to_msq+'</a></div><div class="media-body"><div class="clearfix"></div><div class="attrs">Date Created: 09/06/1988</div><div class="block attrs">Members: 78954</div><div class="block attrs">Published: No</div></div></div>');

$('#pub_message').val("");
		$('#chat_list').scrollTop($('#chat_list')[0].scrollHeight);
		$('#pub_message').focus();
		*/
		
	}

function ShowUTCDate() {
	var dNow = new Date();
	var now = new Date(dNow.getTime() + dNow.getTimezoneOffset() * 60000)
	var utcdate= now.getFullYear() + "-" + (now.getMonth()+1) + "-" + now.getDate() + " " + now.getHours() + ":" + now.getMinutes() + ":" + now.getSeconds() + "";

return utcdate;
}

function fn_filesend() {
	var formdata = new FormData();
	formdata.append("token", '<?=$token?>');
	formdata.append("room_no", '<?=$json_dec->room_no?>');
	formdata.append("mqtt_id", '<?=$mqtt_id?>');

$($("#multiFile")[0].files).each(function(index, file) {
		formdata.append("multi_file[]", file);
		
		//alert(index);
	});

var is_is=false;

for (var k in arr_chatmem) {
		if($('#pub_message').val().startsWith('#'+arr_chatmem[k].nick)) {
			sel_mem.topic=arr_chatmem[k].topic;
			is_is=true;
		}
	}
	if(is_is==false) {
		sel_mem.topic='';
	}

if (formdata) {

jQuery.ajax({
				xhr: function() {
					var xhr = new window.XMLHttpRequest();

xhr.upload.addEventListener("progress", function(evt) {
						if (evt.lengthComputable) {
							var percentComplete = evt.loaded / evt.total;
							percentComplete = parseInt(percentComplete * 100);
							//var $link = $('.'+ids);
							//var $img = $link.find('i'); 
							//$link.html('Uploading..('+percentComplete+'%)');
							//$link.append($img);
							$('#dv_progress').css('width',percentComplete+'%');
							$('#dv_progress').html(percentComplete+'%');
						}
					}, false);

return xhr;
				},
				url: "https://bitbus.eemo.co.kr/bridge/api_chat_upload.php",
				type: "POST",
				data: formdata,
				processData: false,
				contentType: false,
				success: function (res) {
					//var json = jQuery.parseJSON(res);

var json = eval("(" + res + ")");
					var obj = JSON.parse(res);

var arr_file_no=new Array();
					var str_file_no='';
					
					if(json.rst=='1') {
						//$.MessageBox("파일 전송 성공");					
						obj.files_no.forEach((val, index) => {
							//$.MessageBox(val);
							arr_file_no.push(val);
						});

var str_file_no=arr_file_no.join(",");

vv_send_idx++;

json_data.data = '';
							json_data.mode = 'chat_files';
							json_data.room_no = '<?=$json_dec->room_no?>';
							json_data.idx = vv_send_idx;
							json_data.files = str_file_no;

var send_data = JSON.stringify(json_data);

message = new Paho.MQTT.Message(send_data);
							message.destinationName = "pub/<?=$token?>/<?=$json_dec->room_no?>";
							mqtt.send(message);

//$.MessageBox("파일 전송 완료");

$.MessageBox({
								buttonDone  : "확인",
								message     : "파일 전송 완료"
							}).done(function(){
								$('#dv_progress').css('width','0%');
								$('#dv_progress').html('0%');
							}).fail(function(){
							});
							
							
					} else {
						$.MessageBox("<b>파일 전송실패</b><br>알지못하는 오류발생");
					} 
					$('#multiFile').val("");
				}
			});
		}
}

function getExtensionOfFilename(filename) {
 
    var _fileLen = filename.length;
 
    /** 
     * lastIndexOf('.') 
     * 뒤에서부터 '.'의 위치를 찾기위한 함수
     * 검색 문자의 위치를 반환한다.
     * 파일 이름에 '.'이 포함되는 경우가 있기 때문에 lastIndexOf() 사용
     */
    var _lastDot = filename.lastIndexOf('.');
 
    // 확장자 명만 추출한 후 소문자로 변경
    var _fileExt = filename.substring(_lastDot, _fileLen).toLowerCase();
 
    return _fileExt;
}

setTimeout(function(){ 
	
	$('#dv_chat').scrollTop($('#dv_chat')[0].scrollHeight);
}, 500);
</script>