diff --git a/adminer/include/editing.inc.php b/adminer/include/editing.inc.php
index 2fd7a55d..30c47039 100644
--- a/adminer/include/editing.inc.php
+++ b/adminer/include/editing.inc.php
@@ -138,7 +138,7 @@ function textarea($name, $value, $rows = 10, $cols = 80) {
 function edit_type($key, $field, $collations, $foreign_keys = array()) {
 	global $structured_types, $types, $unsigned, $on_actions;
 	?>
-<td><select name="<?php echo $key; ?>[type]" class="type" onfocus="lastType = selectValue(this);" onchange="editingTypeChange(this);"><?php echo optionlist((!$field["type"] || isset($types[$field["type"]]) ? array() : array($field["type"])) + $structured_types + ($foreign_keys ? array(lang('Foreign keys') => $foreign_keys) : array()), $field["type"]); ?></select>
+<td><select name="<?php echo $key; ?>[type]" class="type" onfocus="lastType = selectValue(this);" onchange="editingTypeChange(this);" <?php echo on_help("getTarget(event).value", 1); ?>><?php echo optionlist((!$field["type"] || isset($types[$field["type"]]) ? array() : array($field["type"])) + $structured_types + ($foreign_keys ? array(lang('Foreign keys') => $foreign_keys) : array()), $field["type"]); ?></select>
 <td><input name="<?php echo $key; ?>[length]" value="<?php echo h($field["length"]); ?>" size="3" onfocus="editingLengthFocus(this);"<?php echo (!$field["length"] && ereg('var(char|binary)$', $field["type"]) ? " class='required'" : ""); ?> onchange="editingLengthChange(this);" onkeyup="this.onchange();"><td class="options"><?php //! type="number" with enabled JavaScript
 	echo "<select name='$key" . "[collation]'" . (ereg('(char|text|enum|set)$', $field["type"]) ? "" : " class='hidden'") . '><option value="">(' . lang('collation') . ')' . optionlist($collations, $field["collation"]) . '</select>';
 	echo ($unsigned ? "<select name='$key" . "[unsigned]'" . (!$field["type"] || ereg('((^|[^o])int|float|double|decimal)$', $field["type"]) ? "" : " class='hidden'") . '><option>' . optionlist($unsigned, $field["unsigned"]) . '</select>' : '');
diff --git a/adminer/static/editing.js b/adminer/static/editing.js
index 424caac3..d1edd275 100644
--- a/adminer/static/editing.js
+++ b/adminer/static/editing.js
@@ -632,13 +632,9 @@ function helpMouseover(el, event, text, side) {
 		help.innerHTML = text;
 		jush.highlight_tag([ help ]);
 		alterClass(help, 'hidden');
-		var top = 0, left = 0, parent = target;
-		do {
-			top += parent.offsetTop;
-			left += parent.offsetLeft;
-		} while (parent = parent.offsetParent);
-		help.style.top = (top - (side ? (help.offsetHeight - target.offsetHeight) / 2 : help.offsetHeight)) + 'px';
-		help.style.left = (left - (side ? help.offsetWidth : (help.offsetWidth - target.offsetWidth) / 2)) + 'px';
+		var rect = target.getBoundingClientRect();
+		help.style.top = (rect.top - (side ? (help.offsetHeight - target.offsetHeight) / 2 : help.offsetHeight)) + 'px';
+		help.style.left = (rect.left - (side ? help.offsetWidth : (help.offsetWidth - target.offsetWidth) / 2)) + 'px';
 	}
 }