diff --git a/adminer/include/adminer.inc.php b/adminer/include/adminer.inc.php
index 4b9bec0c..1e6b00a9 100644
--- a/adminer/include/adminer.inc.php
+++ b/adminer/include/adminer.inc.php
@@ -584,7 +584,7 @@ focus(qs('#username'));
 			$query = preg_replace('~[\x80-\xFF]+$~', '', substr($query, 0, 1e6)) . "\n..."; // [\x80-\xFF] - valid UTF-8, \n - can end by one-line comment
 		}
 		$history[$_GET["db"]][] = array($query, time(), $time); // not DB - $_GET["db"] is changed in database.inc.php //! respect $_GET["ns"]
-		return " <span class='time'>" . @date("H:i:s") . "</span> <a href='#$id' onclick=\"return !toggle('$id');\">" . lang('SQL command') . "</a>" // @ - time zone may be not set
+		return " <span class='time'>" . @date("H:i:s") . "</span> <a href='#$id' onclick=\"return toggle('$id');\">" . lang('SQL command') . "</a>" // @ - time zone may be not set
 			. "<div id='$id' class='hidden'><pre><code class='jush-$jush'>" . shorten_utf8($query, 1000) . '</code></pre>'
 			. ($time ? " <span class='time'>($time)</span>" : '')
 			. (support("sql") ? '<p><a href="' . h(str_replace("db=" . urlencode(DB), "db=" . urlencode($_GET["db"]), ME) . 'sql=&history=' . (count($history[$_GET["db"]]) - 1)) . '">' . lang('Edit') . '</a>' : '')
diff --git a/adminer/include/functions.inc.php b/adminer/include/functions.inc.php
index 451bd2c8..0953e52d 100644
--- a/adminer/include/functions.inc.php
+++ b/adminer/include/functions.inc.php
@@ -202,7 +202,7 @@ function confirm() {
 * @return null
 */
 function print_fieldset($id, $legend, $visible = false, $onclick = "") {
-	echo "<fieldset><legend><a href='#fieldset-$id' onclick=\"" . h($onclick) . "return !toggle('fieldset-$id');\">$legend</a></legend><div id='fieldset-$id'" . ($visible ? "" : " class='hidden'") . ">\n";
+	echo "<fieldset><legend><a href='#fieldset-$id' onclick=\"" . h($onclick) . "return toggle('fieldset-$id');\">$legend</a></legend><div id='fieldset-$id'" . ($visible ? "" : " class='hidden'") . ">\n";
 }
 
 /** Return class='active' if $bold is true
diff --git a/adminer/sql.inc.php b/adminer/sql.inc.php
index c51476c4..1e7cb952 100644
--- a/adminer/sql.inc.php
+++ b/adminer/sql.inc.php
@@ -137,7 +137,7 @@ if (!$error && $_POST) {
 										echo "<p>" . ($num_rows ? ($limit && $num_rows > $limit ? lang('%d / ', $limit) : "") . lang('%d row(s)', $num_rows) : "");
 										echo $time;
 										$id = "export-$commands";
-										$export = ", <a href='#$id' onclick=\"return !toggle('$id');\">" . lang('Export') . "</a><span id='$id' class='hidden'>: "
+										$export = ", <a href='#$id' onclick=\"return toggle('$id');\">" . lang('Export') . "</a><span id='$id' class='hidden'>: "
 											. html_select("output", $adminer->dumpOutput(), $adminer_export["output"]) . " "
 											. html_select("format", $dump_format, $adminer_export["format"])
 											. "<input type='hidden' name='query' value='" . h($q) . "'>"
@@ -145,7 +145,7 @@ if (!$error && $_POST) {
 										;
 										if ($connection2 && preg_match("~^($space|\\()*+SELECT\\b~i", $q) && ($explain = explain($connection2, $q))) {
 											$id = "explain-$commands";
-											echo ", <a href='#$id' onclick=\"return !toggle('$id');\">EXPLAIN</a>$export";
+											echo ", <a href='#$id' onclick=\"return toggle('$id');\">EXPLAIN</a>$export";
 											echo "<div id='$id' class='hidden'>\n";
 											select($explain, $connection2, $orgtables);
 											echo "</div>\n";
diff --git a/adminer/static/functions.js b/adminer/static/functions.js
index 1b489262..4aec4341 100644
--- a/adminer/static/functions.js
+++ b/adminer/static/functions.js
@@ -73,12 +73,12 @@ function alterClass(el, className, enable) {
 
 /** Toggle visibility
 * @param string
-* @return boolean
+* @return boolean false
 */
 function toggle(id) {
 	var el = qs('#' + id);
 	el.className = (el.className == 'hidden' ? '' : 'hidden');
-	return true;
+	return false;
 }
 
 /** Set permanent cookie