add nav tag for apply dynamic page and JS files

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+ * Build: http://modernizr.com/download/#-shiv-cssclasses-load
+ */
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\ No newline at end of file

+/**
+ * ytmenu.js v1.0.0
+ * http://www.codrops.com
+ *
+ * Licensed under the MIT license.
+ * http://www.opensource.org/licenses/mit-license.php
+ * 
+ * Copyright 2013, Codrops
+ * http://www.codrops.com
+ */
+var YTMenu = (function() {
+
+	function init() {
+		
+		[].slice.call( document.querySelectorAll( '.dr-menu' ) ).forEach( function( el, i ) {
+
+			var trigger = el.querySelector( 'div.dr-trigger' ),
+				icon = trigger.querySelector( 'span.dr-icon-menu' ),
+				open = false;
+
+			trigger.addEventListener( 'click', function( event ) {
+				if( !open ) {
+					el.className += ' dr-menu-open';
+					open = true;
+				}
+			}, false );
+
+			icon.addEventListener( 'click', function( event ) {
+				if( open ) {
+					event.stopPropagation();
+					open = false;
+					el.className = el.className.replace(/\bdr-menu-open\b/,'');
+					return false;
+				}
+			}, false );
+
+		} );
+
+	}
+
+	init();
+
+})();
\ No newline at end of file

@@ -16,11 +16,11 @@
 <div id="grid">
   <div id="category">
     <ol class="center">
-      <li><a href="service/whatiskhuchat.html" class="saw">What is KHU chat? </a></li>
-      <li><a href="loginmain.html" class="saw">로그인</a></li>
-      <li><a href="signinmain.html" class="saw">회원가입</a></li>
-      <li><a href="question.html" class="saw">문의사항</a></li>
-      <li><a href="afterlogin.html" class="saw">로그인이후</a></li>
+      <li><a class="dr-icon" href="service/whatiskhuchat.html" >What is KHU chat? </a></li>
+      <li><a class="dr-icon" href="loginmain.html" >로그인</a></li>
+      <li><a class="dr-icon" href="signinmain.html" >회원가입</a></li>
+      <li><a class="dr-icon" href="question.html" >문의사항</a></li>
+      <li><a class="dr-icon" href="afterlogin.html" >로그인이후</a></li>
     </ol>
   </div>
       <div id="article">

@@ -12,11 +12,11 @@
 <div class="media" id="grid">
   <div id="category">
     <ol class="center">
-      <li><a href="service/whatiskhuchat.html" class="saw">What is KHU chat? </a></li>
-      <li><a href="loginmain.html" class="saw">로그인</a></li>
-      <li><a href="signinmain.html" class="saw">회원가입</a></li>
-      <li><a href="question.html" class="saw">문의사항</a></li>
-      <li><a href="afterlogin.html" class="saw">로그인이후</a></li>
+      <li><a class="dr-icon" href="service/whatiskhuchat.html">What is KHU chat? </a></li>
+      <li><a class="dr-icon"href="loginmain.html" >로그인</a></li>
+      <li><a class="dr-icon" href="signinmain.html">회원가입</a></li>
+      <li><a class="dr-icon"href="question.html" >문의사항</a></li>
+      <li><a class="dr-icon"href="afterlogin.html" >로그인이후</a></li>
     </ol>
   </div>
     <div id="article">

@@ -11,16 +11,19 @@
   <h1><a href="main.html" color:black>KHU Chatting service</a></h1>
   <img src="image/main2.jpg" class="image">
 
-<div id="grid">
+<nav id="dr-menu" class="dr-menu">
+  <div id="grid">
     <div id="category">
       <ol class="center">
-      <li><a href="service/whatiskhuchat.html" class="saw">What is KHU chat? </a></li>
-      <li><a href="loginmain.html" class="saw">로그인</a></li>
-      <li><a href="signinmain.html" class="saw">회원가입</a></li>
-      <li><a href="question.html" class="saw">문의사항</a></li>
-      <li><a href="afterlogin.html" class="saw">로그인이후</a></li>
+        <li><a class="dr-icon" href="service/whatiskhuchat.html">What is KHU chat? </a></li>
+        <li><a class="dr-icon" href="loginmain.html">로그인</a></li>
+        <li><a class="dr-icon" href="signinmain.html" >회원가입</a></li>
+        <li><a class="dr-icon" href="question.html">문의사항</a></li>
+        <li><a class="dr-icon" href="afterlogin.html" >로그인이후</a></li>
       </ol>
     </div>
+  </div>
+</nav>
   <article>
 
   </article>

@@ -13,11 +13,11 @@
 <div id="grid">
   <div id="category">
     <ol class="center">
-      <li><a href="service/whatiskhuchat.html" class="saw">What is KHU chat? </a></li>
-      <li><a href="loginmain.html" class="saw">로그인</a></li>
-      <li><a href="signinmain.html" class="saw">회원가입</a></li>
-      <li><a href="question.html" class="saw">문의사항</a></li>
-      <li><a href="afterlogin.html" class="saw">로그인이후</a></li>
+      <li><a class="dr-icon" href="service/whatiskhuchat.html" >What is KHU chat? </a></li>
+      <li><a class="dr-icon" href="loginmain.html">로그인</a></li>
+      <li><a class="dr-icon" href="signinmain.html" >회원가입</a></li>
+      <li><a class="dr-icon" href="question.html" >문의사항</a></li>
+      <li><a class="dr-icon" href="afterlogin.html" >로그인이후</a></li>
     </ol>
   </div>
       <div id="article">

@@ -48,11 +48,11 @@ $('#fValidation, #sValidation').on('keyup', function () {
 <div class="media" id="grid">
   <div id="category">
     <ol class="center">
-      <li><a href="service/whatiskhuchat.html" class="saw">What is KHU chat? </a></li>
-      <li><a href="loginmain.html" class="saw">로그인</a></li>
-      <li><a href="signinmain.html" class="saw">회원가입</a></li>
-      <li><a href="question.html" class="saw">문의사항</a></li>
-      <li><a href="afterlogin.html" class="saw">로그인이후</a></li>
+      <li><a class="dr-icon" href="service/whatiskhuchat.html" >What is KHU chat? </a></li>
+      <li><a class="dr-icon" href="loginmain.html" >로그인</a></li>
+      <li><a class="dr-icon" href="signinmain.html" >회원가입</a></li>
+      <li><a class="dr-icon" href="question.html" >문의사항</a></li>
+      <li><a class="dr-icon" href="afterlogin.html" >로그인이후</a></li>
     </ol>
   </div>
       <div id="article">

@@ -40,7 +40,7 @@
     margin-bottom:10px;
 
     }
-  .saw
+  .dr-icon
   {
     color: black;
     text-decoration: none;