diff --git a/assets/js/icecoder.js b/assets/js/icecoder.js
index 9a3a548..c2c261a 100644
--- a/assets/js/icecoder.js
+++ b/assets/js/icecoder.js
@@ -3643,7 +3643,7 @@ var ICEcoder = {
         get('mediaContainer').innerHTML =
             '<iframe src="' +
             this.iceLoc +
-            '/lib/help.php" id="helpIFrame" style="width: 840px; height: 485px"></iframe>';
+            '/lib/help.php" id="helpIFrame" style="width: 840px; height: 495px"></iframe>';
         this.showHide('show', get('blackMask'));
     },
 
@@ -4665,6 +4665,13 @@ var ICEcoder = {
         }
     },
 
+    // Focus/unfocus tab by contracting/expanding file manager
+    focusUnfocusTab: function() {
+        // Switch current lock state and change display of file manager
+        ICEcoder.lockUnlockNav();
+        this.changeFilesW(true === this.lockedNav ? 'expand' : 'contract');
+    },
+
 // ==
 // UI
 // ==
diff --git a/index.php b/index.php
index 8f9b204..36f6dd6 100644
--- a/index.php
+++ b/index.php
@@ -303,7 +303,7 @@ if (true === $havePrettier && true === file_exists(dirname(__FILE__) . "/plugins
 		<a nohref onClick="ICEcoder.alphaTabs()"><img src="<?php echo $iceURLPath;?>/assets/images/nav-alpha.png" class="alphaTabs" title="<?php echo $t['Alphabetize tabs'];?>"></a>
 		<?php
 		for ($i = 1; $i <= 100; $i++) {
-			echo '<div id="tab' . $i . '" class="tab" onmousedown="if (false === ICEcoder.overCloseLink) {ICEcoder.switchTab(parseInt(this.id.slice(3), 10)); ICEcoder.tabDragStart(parseInt(this.id.slice(3), 10))}; if (1 === event.button) {ICEcoder.closeTab(parseInt(this.id.slice(3), 10)); return false}; thisColor = ICEcoder.colorSelectedText;" onmouseover="thisColor = this.style.color; this.style.color = ICEcoder.colorSelectedText" onmouseout="this.style.color = thisColor"></div>';
+			echo '<div id="tab' . $i . '" class="tab" onmousedown="if (false === ICEcoder.overCloseLink) {ICEcoder.switchTab(parseInt(this.id.slice(3), 10)); ICEcoder.tabDragStart(parseInt(this.id.slice(3), 10))}; if (1 === event.button) {ICEcoder.closeTab(parseInt(this.id.slice(3), 10)); return false}; thisColor = ICEcoder.colorSelectedText;" onmouseover="thisColor = this.style.color; this.style.color = ICEcoder.colorSelectedText" onmouseout="this.style.color = thisColor" ondblclick="ICEcoder.focusUnfocusTab()"></div>';
 		}
 		?><div class="newTab" onClick="ICEcoder.newTab(false)" id="newTab">+</div>
 	</div>
diff --git a/lang/chinese-simplified.php b/lang/chinese-simplified.php
index 41dd85c..ba25221 100644
--- a/lang/chinese-simplified.php
+++ b/lang/chinese-simplified.php
@@ -177,6 +177,7 @@ $text = [
         "or"                                       => "或",
         "Left click"                               => "左键单击",
         "Middle click"                             => "中键单击",
+        "Double click"                             => "双击",
         "Double click tap..."                      => "双击 / 点击 (移动端)",
         "Right click"                              => "右键单击",
         "Middle scrollwheel"                       => "中间滚轮滚动",
diff --git a/lang/chinese-traditional.php b/lang/chinese-traditional.php
index ae19c5d..43feb24 100644
--- a/lang/chinese-traditional.php
+++ b/lang/chinese-traditional.php
@@ -176,6 +176,7 @@ $text = [
         "or"                                       => "或",
         "Left click"                               => "左鍵單擊",
         "Middle click"                             => "中鍵單擊",
+        "Double click"                             => "雙擊",
         "Double click tap..."                      => "雙擊 / 手指點擊 (移動端)",
         "Right click"                              => "右鍵單擊",
         "Middle scrollwheel"                       => "中間滾輪滾動",
diff --git a/lang/dutch.php b/lang/dutch.php
index 268e53f..c146d1d 100644
--- a/lang/dutch.php
+++ b/lang/dutch.php
@@ -176,6 +176,7 @@ $text = [
         "or"                                       => "of",
         "Left click"                               => "Linker muisklik",
         "Middle click"                             => "Middelste muisklik",
+        "Double click"                             => "Dubbel klikken",
         "Double click tap..."                      => "Dubbel klikken / tap (mobiele apparatuur)",
         "Right click"                              => "Rechter muisklik",
         "Middle scrollwheel"                       => "Midden scrollwiel",
diff --git a/lang/english.php b/lang/english.php
index fa34b0e..2ec3645 100644
--- a/lang/english.php
+++ b/lang/english.php
@@ -176,6 +176,7 @@ $text = [
         "or"                                       => "or",
         "Left click"                               => "Left click",
         "Middle click"                             => "Middle click",
+        "Double click"                             => "Double click",
         "Double click tap..."                      => "Double click / tap (mobile)",
         "Right click"                              => "Right click",
         "Middle scrollwheel"                       => "Middle scrollwheel",
diff --git a/lang/french.php b/lang/french.php
index ce8e7ee..8ed5d04 100644
--- a/lang/french.php
+++ b/lang/french.php
@@ -176,6 +176,7 @@ $text = [
         "or"                                       => "ou",
         "Left click"                               => "Clic gauche",
         "Middle click"                             => "Clic du milieu",
+        "Double click"                             => "Double clic",
         "Double click tap..."                      => "Double clic / touche (mobile)",
         "Right click"                              => "Clic droit",
         "Middle scrollwheel"                       => "Roulette du milieu",
diff --git a/lang/german.php b/lang/german.php
index f747a8d..d17d61b 100644
--- a/lang/german.php
+++ b/lang/german.php
@@ -176,6 +176,7 @@ $text = [
         "or"                                       => "oder",
         "Left click"                               => "Linksklick",
         "Middle click"                             => "mittlerer Klick",
+        "Double click"                             => "Doppelklick",
         "Double click tap..."                      => "Doppelklick / Tap (Mobile)",
         "Right click"                              => "Rechtsklick",
         "Middle scrollwheel"                       => "mittleres Mausrad",
diff --git a/lang/italian.php b/lang/italian.php
index 1df5c5d..00b255c 100644
--- a/lang/italian.php
+++ b/lang/italian.php
@@ -176,6 +176,7 @@ $text = [
         "or"                                       => "o",
         "Left click"                               => "Click Sinistro",
         "Middle click"                             => "Click centrale",
+        "Double click"                             => "Doppio click",
         "Double click tap..."                      => "Doppio click / tap (mobile)",
         "Right click"                              => "Click Destro",
         "Middle scrollwheel"                       => "scrollwheel Medio",
diff --git a/lang/norwegian.php b/lang/norwegian.php
index b6ddbd1..83ca53b 100644
--- a/lang/norwegian.php
+++ b/lang/norwegian.php
@@ -176,6 +176,7 @@ $text = [
         "or"                                       => "eller",
         "Left click"                               => "Venstre klikk",
         "Middle click"                             => "Middel klikk",
+        "Double click"                             => "Dobbel klikk",
         "Double click tap..."                      => "Dobbel klikk / tap (mobil)",
         "Right click"                              => "Høyre klikk",
         "Middle scrollwheel"                       => "Middel rullehjul",
diff --git a/lang/persian.php b/lang/persian.php
index 0fe0546..42a3480 100644
--- a/lang/persian.php
+++ b/lang/persian.php
@@ -176,6 +176,7 @@ $text = [
         "or"                                       => "یا",
         "Left click"                               => "کلیک چپ",
         "Middle click"                             => "کلیک وسط",
+        "Double click"                             => "تب ( موبایل )",
         "Double click tap..."                      => "دبل کلیک / تب ( موبایل )",
         "Right click"                              => "کلیک راست",
         "Middle scrollwheel"                       => "اسکرولر وسط",
diff --git a/lang/portuguese-brazilian.php b/lang/portuguese-brazilian.php
index 28d9db0..3136151 100644
--- a/lang/portuguese-brazilian.php
+++ b/lang/portuguese-brazilian.php
@@ -176,6 +176,7 @@ $text = [
         "or"                                       => "ou",
         "Left click"                               => "Clique esquerdo",
         "Middle click"                             => "Clique Meio",
+        "Double click"                             => "Clique duplo",
         "Double click tap..."                      => "Clique duplo / toque (mobile)",
         "Right click"                              => "Clique direito",
         "Middle scrollwheel"                       => "Meio scroll",
diff --git a/lang/spanish.php b/lang/spanish.php
index 816eee6..23f97ec 100644
--- a/lang/spanish.php
+++ b/lang/spanish.php
@@ -176,6 +176,7 @@ $text = [
         "or"                                       => "o",
         "Left click"                               => "Click izquierdo",
         "Middle click"                             => "Click central",
+        "Double click"                             => "Doble click",
         "Double click tap..."                      => "Doble click / tap (m&oacute;viles)",
         "Right click"                              => "Click derecho",
         "Middle scrollwheel"                       => "Rueda del rat&oacute;n",
diff --git a/lib/help.php b/lib/help.php
index 25a4fdf..9d7e0d7 100644
--- a/lib/help.php
+++ b/lib/help.php
@@ -48,6 +48,7 @@ $t = $text['help'];
 
 	<h2><?php echo $t['On Tabs'];?></h2>
 	<span class="key"><?php echo $t['Middle click'];?></span> <span class="shortcut"><?php echo $t['Close tab'];?></span><br>
+	<span class="key"><?php echo $t['Double click'];?></span> <span class="shortcut"><?php echo $t['Contract expand file...'];?></span><br>
 	<span class="key"><?php echo $isMac ? "Cmd" : "Ctrl";?> <span class="plus">+</span> Backspace</span> <span class="shortcut"><?php echo $t['Jump to previous tab'];?></span><br><br>
 </div>