diff --git a/plugin/captcha/captcha.js b/plugin/captcha/captcha.js
index be50abe14..6289dfc7b 100644
--- a/plugin/captcha/captcha.js
+++ b/plugin/captcha/captcha.js
@@ -1,11 +1,11 @@
 function chk_captcha(input_key)
 {
-    if (typeof(input_key) != 'undefined') {
+    if (typeof(input_key) != "undefined") {
         var captcha_result = false;
         $.ajax({
-            type: 'POST',
-            url: g4_path+'/plugin/captcha/get.php',
-            data: { 'captcha_key': input_key.value },
+            type: "POST",
+            url: g4_path+"/plugin/captcha/get.php",
+            data: { "captcha_key": input_key.value },
             cache: false,
             async: false,
             success: function(result) {
@@ -13,7 +13,7 @@ function chk_captcha(input_key)
             }
         });
         if (!captcha_result) {
-            alert('숫자가 틀렸거나 입력 횟수가 넘었습니다.\n\n이미지를 클릭하여 다시 입력해 주십시오.');
+            alert("숫자가 틀렸거나 입력 횟수가 넘었습니다.\n\n이미지를 클릭하여 다시 입력해 주십시오.");
             input_key.select();
             return false;
         }
@@ -21,12 +21,94 @@ function chk_captcha(input_key)
     return true;
 }
 
+function l_PlaySound(url, placeholderId) {
+  if (document.getElementById) {
+    var soundUrl = url;
+    var placeholder = document.getElementById(placeholderId);
+
+    placeholder.innerHTML = "";
+
+    document.body.style.cursor = 'wait';
+    var html5SoundPlayed = false;
+    var browserCompatibilityCheck = document.createElement('audio');
+    if (!!(browserCompatibilityCheck.canPlayType) &&
+        !!(browserCompatibilityCheck.canPlayType("audio/wav")) &&
+        !l_DetectFirefox3()) {
+      sound = new Audio(soundUrl);
+      sound.id = 'LBD_CaptchaSoundAudio';
+      sound.autoplay = true;
+      sound.controls = false;
+      sound.autobuffer = false;
+      sound.loop = false;
+
+      placeholder.appendChild(sound);
+      html5SoundPlayed = true;
+    }
+
+    if (!html5SoundPlayed) {
+      var objectSrc = "<object id='LBD_CaptchaSoundObject' classid='clsid:22D6F312-B0F6-11D0-94AB-0080C74C7E95' height='0' width='0' style='width:0; height:0;'><param name='AutoStart' value='1' /><param name='Volume' value='0' /><param name='PlayCount' value='1' /><param name='FileName' value='" + soundUrl + "' /><embed id='LBD_CaptchaSoundEmbed' src='" + soundUrl + "' autoplay='true' hidden='true' volume='100' type='audio/x-wav' style='display:inline;' /></object>";
+
+      placeholder.innerHTML = objectSrc;
+    }
+
+    document.body.style.cursor = 'default';
+  }
+}
+
+function l_DetectFirefox3() {
+  var detected = false;
+  if (navigator && navigator.userAgent) {
+    var matches = navigator.userAgent.match(/(Firefox)\/(3\.6\.[^;\+,\/\s]+)/);
+    if (matches) {
+      detected = true;
+    }
+  }
+  return detected;
+}
+
 $(function() {
-    $('#captcha').click(function() {
-        this.setAttribute('src', g4_path+'/plugin/captcha/run.php?t='+(new Date).getTime());
-        //$('#captcha_key').focus();//이미지 새로고침 후 입력박스에 포커스 : 지운아빠 2012-07-13
+    $("#captcha").click(function() {
+        this.setAttribute("src", g4_path+"/plugin/captcha/run.php?t="+(new Date).getTime());
+        //$("#captcha_key").focus();//이미지 새로고침 후 입력박스에 포커스 : 지운아빠 2012-07-13
         //캡챠 클릭 시에 포커스 줘야 하는데 페이지 새로 고침되면 포커스를 줘서 주석처리 : 지운아빠 2012-08-03
     })
-    .css('cursor', 'pointer')
-    .trigger('click');
+    .css("cursor", "pointer")
+    .trigger("click");
+
+    $("#captcha_wav").click(function(){
+        $("body").css("cursor", "wait");
+
+        var wav_url = this.href+"?t="+new Date().getTime();
+
+        var html5use = false;
+        var html5audio = document.createElement("audio");
+        if (html5audio.canPlayType && html5audio.canPlayType("audio/wav")) {
+            var wav = new Audio(wav_url);
+            wav.id = "wav_audio";
+            wav.autoplay = true;
+            wav.controls = false;
+            wav.autobuffer = false;
+            wav.loop = false;
+            
+            if ($("#wav_audio").length) $("#wav_audio").remove();
+            $("#captcha_wav").after(wav);
+
+            html5use = true;
+        } 
+        
+        if (!html5use) {
+            var object = '<object id="wav_object" classid="clsid:22d6f312-b0f6-11d0-94ab-0080c74c7e95" height="0" width="0" style="width:0; height:0;">';
+            object += '<param name="AutoStart" value="1" />';
+            object += '<param name="Volume" value="0" />';
+            object += '<param name="PlayCount" value="1" />';
+            object += '<param name="FileName" value="' + wav_url + '" />';
+            object += '<embed id="wav_embed" src="' + wav_url + '" autoplay="true" hidden="true" volume="100" type="audio/x-wav" style="display:inline;" />';
+            object += '</object>';
+            if ($("#wav_object").length) $("#wav_object").remove();
+            $("#captcha_wav").after(object);
+        }
+        
+        $("body").css("cursor", "default");
+        return false;
+    });
 });
\ No newline at end of file