diff --git a/src/background/scripts/modules/tab.js b/src/background/scripts/modules/tab.js
index f4faeda8..2c73219e 100644
--- a/src/background/scripts/modules/tab.js
+++ b/src/background/scripts/modules/tab.js
@@ -24,8 +24,8 @@ var Tab = (function() {
       Post(tab, { action: "Dialog.draw", urls: return_urls, keyword: keyword });
     } else {
       chrome.bookmarks.search(keyword, function(bookmarks) {
-        // Search start from 20 days ago
-        chrome.history.search({text: keyword, maxResults: 30, startTime: (new Date().getTime() - 1000 * 60 * 60 * 24 * 20)}, function(historys) {
+        // Search start from 10 days ago
+        chrome.history.search({text: keyword, maxResults: 30, startTime: (new Date().getTime() - 1000 * 60 * 60 * 24 * 10)}, function(historys) {
           Post(tab, { action: "Dialog.draw", urls: return_urls.concat(bookmarks.concat(historys)), keyword: keyword });
         });
       });
diff --git a/src/frontend/modules/dialog.js b/src/frontend/modules/dialog.js
index 22b18fe0..3013311d 100644
--- a/src/frontend/modules/dialog.js
+++ b/src/frontend/modules/dialog.js
@@ -189,8 +189,8 @@ var Dialog = (function() {
         openCurrent();
       }
       if (key == '<Up>') prev();
-      if (key == '<S-Tab>') prev(10);
       if (key == '<Down>') next();
+      if (key == '<S-Tab>') prev(10);
       if (key == '<Tab>') next(10);
 
       KeyEvent.stopPropagation(e);
@@ -220,11 +220,15 @@ var Dialog = (function() {
     if (!keep_open) { stop(); }
   }
 
+  function open(/*Boolean*/ keep_open) {
+    setTimeout(openCurrent, 500, keep_open);
+  }
+
 	return {
     start : start,
 		draw    : draw,
-    openCurrent : openCurrent ,
-    openCurrentNewTab : function() { openCurrent(true) },
+    openCurrent : open,
+    openCurrentNewTab : function() { open(true) },
 		stop  : stop
 	};
 })();