Index: branches/comu-ver2/html/user_data/packages/default/css/admin_file_manager.css
===================================================================
--- branches/comu-ver2/html/user_data/packages/default/css/admin_file_manager.css	(revision 17351)
+++ branches/comu-ver2/html/user_data/packages/default/css/admin_file_manager.css	(revision 17406)
@@ -1,2 +1,7 @@
+#contents-filemanager-tree {
+    float: left;
+    width: 328px;
+    height: 430px;
+}
 #tree{
     height: 410px;
@@ -9,10 +14,7 @@
     border-width: 1px
 }
-#filemanager-block-tree {
-    float: left;
-    width: 328px;
-    height: 430px;
+#contents-filemanager-nowdir {
+    margin: 0 0 20px 0;
 }
-
 #file_view {
     height: 380px;
@@ -24,8 +26,4 @@
     border-width: 1px
 }
-#filemanager-block-table {
-    margin: 0 0 20px 0;
-}
-
 #now_dir {
     height: 20px;
Index: branches/comu-ver2/html/user_data/packages/default/js/file_manager.js
===================================================================
--- branches/comu-ver2/html/user_data/packages/default/js/file_manager.js	(revision 16748)
+++ branches/comu-ver2/html/user_data/packages/default/js/file_manager.js	(revision 17406)
@@ -158,9 +158,9 @@
 function fnTreeMenu(tName, imgName, path) {
 
-	tMenu = document.all[tName].style;
-
-	if(tMenu.display == 'none') {
+	tMenu = $("#" + tName);
+
+	if(tMenu.css("display") == 'none') {
 		fnChgImg(IMG_MINUS, imgName);
-		tMenu.display = "block";
+		tMenu.show();
 		// 階層の開いた状態を保持
 		arrTreeStatus.push(path);
@@ -168,5 +168,5 @@
 	} else {
 		fnChgImg(IMG_PLUS, imgName);
-		tMenu.display = "none";
+		tMenu.hide();
 		// 閉じ状態を保持
 		fnDelTreeStatus(path);