diff --git a/app/assets/javascripts/admin/filemanager.js b/app/assets/javascripts/admin/filemanager.js
new file mode 100644
index 000000000..2aea26b8d
--- /dev/null
+++ b/app/assets/javascripts/admin/filemanager.js
@@ -0,0 +1,102 @@
+!function ($) {
+    $.fn.checkListLength = function (param){
+        _defaultSettings = {
+            onlyOne: null,
+        };
+        _set = $.extend(_defaultSettings, param);
+        $this = this;
+        $li = this.children('li');
+        $dropzone = $('#dropzone');
+        if(($li.length - _set.onlyOne) == 0) {
+		    $('#dropzone').fadeIn(300);
+		} else {
+		    $('#dropzone').fadeOut(300);
+		};
+		$('#file-list').nanoScroller({ scrollTop: 0, iOSNativeScrolling: true });
+    }
+}(window.jQuery);
+$(function () {
+    'use strict';
+    // Initialize the jQuery File Upload widget:
+    $('#fileupload').fileupload({
+        maxFileSize: 5000000,
+        acceptFileTypes: /(\.|\/)(gif|jpe?g|png|pdf|doc|docx|ppt|pptx|xls|xlsx)$/i,
+        dropZone: $('#dropzone'),
+        headers:{
+            'X-CSRF-Token': $('meta[name="csrf-token"]').attr("content")
+        }
+    }).bind('fileuploadstop', function (e, data) {
+    	window.location.reload();
+    });
+});
+$(document).ready(function(){
+	var insertBtn = $("#insert_btn"),
+		deleteBtn = $("#delete_btn"),
+		url = null;
+
+	$("#asset_sort_list").on(clickEvent,"input[type=checkbox]",function(){
+		if($("#asset_sort_list input[type=checkbox]:checked").length == 1){
+			url = window.location.protocol + "//" + window.location.host + $("#url_" + $("input[type=checkbox]:checked").val()).val();
+			insertBtn.show();
+		}else{
+			insertBtn.hide();
+			url = null;
+		}
+		if($("#asset_sort_list input[type=checkbox]:checked").length)
+			deleteBtn.show();
+		else
+			deleteBtn.hide();
+	})
+	insertBtn.bind(clickEvent,function(){
+		var alt_text = $("#"+language+"_desc_"+$("input[type=checkbox]:checked").val()).val();
+		alt_text = (alt_text ? alt_text : "This is alt text");
+		if(url){
+			window.opener.CKEDITOR.tools.callFunction( funcNum, url, function() {
+			    var element,
+			        dialog = this.getDialog();
+			    if ( dialog.getName() == 'image' ) {
+			        element = dialog.getContentElement( 'info', 'txtAlt' );
+			        if ( element )
+			            element.setValue( alt_text );
+			    }
+			});
+			window.close();
+		}
+	})
+	deleteBtn.bind( clickEvent,function(){
+		var items_to_delete = [],
+			type = getUrlParam("type");
+		$("input[type=checkbox]:checked").each(function(){
+			items_to_delete.push($(this).val());
+		})
+		$.post("<%= delete_files_admin_assets_path %>",{"files":items_to_delete,"type":type},function(){
+			deleteBtn.hide();
+		})
+	})
+	var currentEdit = null;
+	$(document).on("ajax:success","form[data-remote=true]",function(evt, data, xhr){
+		currentEdit.replaceWith($(data));
+		$("#editform").modal("hide");
+	})
+
+	$("#asset_sort_list").on(clickEvent,".editform",function(){
+		currentEdit = $(this).parent().parent();
+		$.get($(this).attr("href"),function(data){
+			$("#editform").html(data).modal("show");
+		})
+		return false;
+	})
+
+	function getUrlParam( paramName ) {
+	    var reParam = new RegExp( '(?:[\?&]|&)' + paramName + '=([^&]+)', 'i' ) ;
+	    var match = window.location.search.match(reParam) ;
+
+	    return ( match && match.length > 1 ) ? match[ 1 ] : null ;
+	}
+	var funcNum = getUrlParam( 'CKEditorFuncNum' ),
+		t = getUrlParam('CKEditor').split("_"),
+		language = t[t.length-1];
+
+	language = (language == "tw" ? "zh_tw" : language); 
+
+})
\ No newline at end of file
diff --git a/app/views/admin/assets/index.html.erb b/app/views/admin/assets/index.html.erb
index fc373d2e0..a2956fbe5 100644
--- a/app/views/admin/assets/index.html.erb
+++ b/app/views/admin/assets/index.html.erb
@@ -317,111 +317,9 @@
   <%= javascript_include_tag "file-upload/jquery.fileupload-fp.js" %>
   <%= javascript_include_tag "file-upload/jquery.fileupload-ui.js" %>
   <%= javascript_include_tag "file-upload/drop-zone.js" %>
+  <%= javascript_include_tag "admin/filemanager.js" %>
 <% end %>
-<script type="text/javascript">
-!function ($) {
-    $.fn.checkListLength = function (param){
-        _defaultSettings = {
-            onlyOne: null,
-        };
-        _set = $.extend(_defaultSettings, param);
-        $this = this;
-        $li = this.children('li');
-        $dropzone = $('#dropzone');
-        if(($li.length - _set.onlyOne) == 0) {
-		    $('#dropzone').fadeIn(300);
-		} else {
-		    $('#dropzone').fadeOut(300);
-		};
-		$('#file-list').nanoScroller({ scrollTop: 0, iOSNativeScrolling: true });
-    }
-}(window.jQuery);
-$(function () {
-    'use strict';
-    // Initialize the jQuery File Upload widget:
-    $('#fileupload').fileupload({
-        maxFileSize: 5000000,
-        acceptFileTypes: /(\.|\/)(gif|jpe?g|png|pdf|doc|docx|ppt|pptx|xls|xlsx)$/i,
-        dropZone: $('#dropzone'),
-        headers:{
-            'X-CSRF-Token': $('meta[name="csrf-token"]').attr("content")
-        }
-    }).bind('fileuploadstop', function (e, data) {
-    	window.location.reload();
-    });
-});
-$(document).ready(function(){
-	var insertBtn = $("#insert_btn"),
-		deleteBtn = $("#delete_btn"),
-		url = null;
 
-	$("#asset_sort_list").on(clickEvent,"input[type=checkbox]",function(){
-		if($("input[type=checkbox]:checked").length == 1){
-			url = window.location.protocol + "//" + window.location.host + $("#url_" + $("input[type=checkbox]:checked").val()).val();
-			insertBtn.show();
-		}else{
-			insertBtn.hide();
-			url = null;
-		}
-		if($("input[type=checkbox]:checked").length)
-			deleteBtn.show();
-		else
-			deleteBtn.hide();
-	})
-	insertBtn.bind(clickEvent,function(){
-		var alt_text = $("#"+language+"_desc_"+$("input[type=checkbox]:checked").val()).val();
-		alt_text = (alt_text ? alt_text : "This is alt text");
-		if(url){
-			window.opener.CKEDITOR.tools.callFunction( funcNum, url, function() {
-			    var element,
-			        dialog = this.getDialog();
-			    if ( dialog.getName() == 'image' ) {
-			        element = dialog.getContentElement( 'info', 'txtAlt' );
-			        if ( element )
-			            element.setValue( alt_text );
-			    }
-			});
-			window.close();
-		}
-	})
-	deleteBtn.bind( clickEvent,function(){
-		var items_to_delete = [],
-			type = getUrlParam("type");
-		$("input[type=checkbox]:checked").each(function(){
-			items_to_delete.push($(this).val());
-		})
-		$.post("<%= delete_files_admin_assets_path %>",{"files":items_to_delete,"type":type},function(){
-			deleteBtn.hide();
-		})
-	})
-	var currentEdit = null;
-	$(document).on("ajax:success","form[data-remote=true]",function(evt, data, xhr){
-		currentEdit.replaceWith($(data));
-		$("#editform").modal("hide");
-	})
-
-	$("#asset_sort_list").on(clickEvent,".editform",function(){
-		currentEdit = $(this).parent().parent();
-		$.get($(this).attr("href"),function(data){
-			$("#editform").html(data).modal("show");
-		})
-		return false;
-	})
-
-	function getUrlParam( paramName ) {
-	    var reParam = new RegExp( '(?:[\?&]|&)' + paramName + '=([^&]+)', 'i' ) ;
-	    var match = window.location.search.match(reParam) ;
-
-	    return ( match && match.length > 1 ) ? match[ 1 ] : null ;
-	}
-	var funcNum = getUrlParam( 'CKEditorFuncNum' ),
-		t = getUrlParam('CKEditor').split("_"),
-		language = t[t.length-1];
-
-	language = (language == "tw" ? "zh_tw" : language); 
-
-})
-</script>
 <script id="template-upload" type="text/x-tmpl">
     {% for (var i=0, file; file=o.files[i]; i++) { %}
       <li class="template-upload fade">