diff --git a/modules/browser.js b/modules/browser.js
index 35b50a31..115009ad 100644
--- a/modules/browser.js
+++ b/modules/browser.js
@@ -166,9 +166,12 @@ TreeStyleTabBrowser.prototype = inherit(TreeStyleTabWindow.prototype, {
 		if (node._scrollbox)
 			node = node._scrollbox;
 		var boxObject = (node.scrollBoxObject || node.boxObject);
-                try {
+		try {
 			boxObject = boxObject.QueryInterface(Ci.nsIScrollBoxObject); // for Tab Mix Plus (ensure scrollbox-ed)
-                } catch (ex) { /* May not implement this interface e.g. after bug 979835 */ }
+		}
+		catch(e) {
+			// May not implement this interface e.g. after bug 979835
+		}
                 return boxObject;
 	},
  
diff --git a/modules/lib/autoScroll.js b/modules/lib/autoScroll.js
index acc81606..104d304e 100644
--- a/modules/lib/autoScroll.js
+++ b/modules/lib/autoScroll.js
@@ -6,10 +6,9 @@
                         .autoScroll
                         .processAutoScroll(mouseMoveOrDragOverEvent);
 
- license: The MIT License, Copyright (c) 2009-2012 YUKI "Piro" Hiroshi
-   http://github.com/piroor/fxaddonlibs/blob/master/license.txt
+ license: The MIT License, Copyright (c) 2009-2014 YUKI "Piro" Hiroshi
  original:
-   http://github.com/piroor/fxaddonlibs/blob/master/autoScroll.js
+   http://github.com/piroor/fxaddonlib-autoscroll
 */
 
 /* To work as a JS Code Module */
@@ -30,7 +29,7 @@ if (typeof window == 'undefined' ||
 }
 
 (function() {
-	const currentRevision = 6;
+	const currentRevision = 7;
 
 	if (!('piro.sakura.ne.jp' in window)) window['piro.sakura.ne.jp'] = {};
 
@@ -164,10 +163,13 @@ if (typeof window == 'undefined' ||
 		getScrollBoxObject : function(aTabBrowser) 
 		{
 			var box = this.getScrollBox(aTabBrowser);
-			var boxObject = (box.scrollBoxObject || box.boxObject);
+			var boxObject = box.scrollBoxObject || box.boxObject;
 			try {
-				boxObject = boxObject.QueryInterface(Ci.nsIScrollBoxObject); // for Tab Mix Plus (ensure scrollbox-ed)
-			} catch (ex) { /* May not implement this interface e.g. after bug 979835 */ }
+				boxObject = boxObject.QueryInterface(Ci.nsIScrollBoxObject); // Tab Mix Plus
+			}
+			catch(e) {
+				// May not implement this interface e.g. after bug 979835
+			}
 			return boxObject;
 		},