diff --git a/showmore_dyn/lang/C/messages.po b/showmore_dyn/lang/C/messages.po
index 0dc4d11c..c91cb1d0 100644
--- a/showmore_dyn/lang/C/messages.po
+++ b/showmore_dyn/lang/C/messages.po
@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: \n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2020-03-15 21:20+0100\n"
+"POT-Creation-Date: 2020-12-31 09:16-0500\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -17,14 +17,24 @@ msgstr ""
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
 
-#: showmore_dyn.php:62
+#: showmore_dyn.php:59
 msgid "Save Settings"
 msgstr ""
 
-#: showmore_dyn.php:64 showmore_dyn.php:65
+#: showmore_dyn.php:60
+msgid "Show More Dynamic"
+msgstr ""
+
+#: showmore_dyn.php:61
 msgid "Limit Height"
 msgstr ""
 
-#: showmore_dyn.php:73
-msgid "Show more ..."
+#: showmore_dyn.php:61
+msgid ""
+"The maximal pixel height of posts before the Show More link is added, 0 to "
+"disable"
+msgstr ""
+
+#: showmore_dyn.php:69
+msgid "Show more..."
 msgstr ""
diff --git a/showmore_dyn/showmore_dyn.js b/showmore_dyn/showmore_dyn.js
index 4b32b2d3..74803d2d 100644
--- a/showmore_dyn/showmore_dyn.js
+++ b/showmore_dyn/showmore_dyn.js
@@ -6,15 +6,14 @@ $(document).ready(function() {
 		return;
 	}
 
-	$("head").append('<style type="text/css"></style>');
-	var newStyleElement = $("head").children(':last');
-	newStyleElement.html('.limit-height{max-height: ' + postLimitHeight + 'px; overflow: hidden; }');
-
-	handleNewWallItemBodies();
-
-	document.addEventListener("postprocess_liveupdate", function() {
+	if (postLimitHeight) {
+		$('head').append('<style type="text/css">.limit-height{max-height: ' + postLimitHeight + 'px; overflow: hidden; }</style>');
 		handleNewWallItemBodies();
-	});
+
+		document.addEventListener('postprocess_liveupdate', function() {
+			handleNewWallItemBodies();
+		});
+	}
 });
 
 function handleNewWallItemBodies() {
diff --git a/showmore_dyn/showmore_dyn.php b/showmore_dyn/showmore_dyn.php
index 32aedb08..bf8f5608 100644
--- a/showmore_dyn/showmore_dyn.php
+++ b/showmore_dyn/showmore_dyn.php
@@ -41,10 +41,7 @@ function showmore_dyn_settings_post()
 	}
 
 	if (isset($_POST['showmore_dyn-submit'])) {
-		$limitHeight = $_POST['limitHeight'];
-		if ($limitHeight && is_numeric($limitHeight)) {
-			DI::pConfig()->set(local_user(), 'showmore_dyn', 'limitHeight', $limitHeight);
-		}
+		DI::pConfig()->set(local_user(), 'showmore_dyn', 'limitHeight', $_POST['limitHeight'] ?? 0);
 	}
 }
 
@@ -60,16 +57,16 @@ function showmore_dyn_settings(App &$a, &$o)
 	$t = Renderer::getMarkupTemplate('settings.tpl', 'addon/showmore_dyn/');
 	$o .= Renderer::replaceMacros($t, [
 		'$submit' => DI::l10n()->t('Save Settings'),
-		'$title' => 'Showmore Dynamic',
-		'$limitHeight' => ['limitHeight', DI::l10n()->t('Limit Height'), $limitHeight, 'The maximal height of posts when collapsed', '', '', 'number'],
+		'$header' => DI::l10n()->t('Show More Dynamic'),
+		'$limitHeight' => ['limitHeight', DI::l10n()->t('Limit Height'), $limitHeight, DI::l10n()->t('The maximal pixel height of posts before the Show More link is added, 0 to disable'), '', '', 'number'],
 	]);
 
 }
 
 function showmore_dyn_script()
 {
-	$limitHeight = DI::pConfig()->get(local_user(), 'showmore_dyn', 'limitHeight', 250);
-	$showmore_dyn_showmore_linktext = DI::l10n()->t('Show more ...');
+	$limitHeight = intval(DI::pConfig()->get(local_user(), 'showmore_dyn', 'limitHeight', 250));
+	$showmore_dyn_showmore_linktext = DI::l10n()->t('Show more...');
 	DI::page()['htmlhead'] .= <<<EOT
 <script>
 	var postLimitHeight = $limitHeight;
diff --git a/showmore_dyn/templates/settings.tpl b/showmore_dyn/templates/settings.tpl
index 5e8bc3f1..ac37e937 100644
--- a/showmore_dyn/templates/settings.tpl
+++ b/showmore_dyn/templates/settings.tpl
@@ -1,5 +1,10 @@
-<div class="settings-block">
-	<h3 class="settings-heading">{{$title}}</h3>
+<span id="settings_showmore_dyn_inflated" class="settings-block fakelink" style="display: block;" onclick="openClose('settings_showmore_dyn_expanded'); openClose('settings_showmore_dyn_inflated');">
+	<h3>{{$header}}</h3>
+</span>
+<div id="settings_showmore_dyn_expanded" class="settings-block" style="display: none;">
+	<span class="fakelink" onclick="openClose('settings_showmore_dyn_expanded'); openClose('settings_showmore_dyn_inflated');">
+		<h3>{{$header}}</h3>
+	</span>
 	{{include file="field_input.tpl" field=$limitHeight}}
 
 	<div class="settings-submit-wrapper">