added a note explicitly outlining id as a settable option in form_dropdown()
diff --git a/user_guide/helpers/form_helper.html b/user_guide/helpers/form_helper.html
index 730acb6..2bb2a4a 100644
--- a/user_guide/helpers/form_helper.html
+++ b/user_guide/helpers/form_helper.html
@@ -170,7 +170,7 @@
// Would produce:<br /><br />
<input type="text" name="username" id="username" value="johndoe" maxlength="100" size="50" style="width:50%" /></code>
-<p>If you would like your form to contain some additional data, like JavaScript, you can pass it as a string in the
+<p>If you would like your form to contain some additional data, like Javascript, you can pass it as a string in the
third parameter:</p>
<code>$js = 'onClick="some_function()"';<br />
@@ -232,10 +232,10 @@
</select></code>
-<p>If you would like the opening <select> to contain additional data, like JavaScript, you can pass it as a string in the
+<p>If you would like the opening <select> to contain additional data, like an <kbd>id</kbd> attribute or JavaScript, you can pass it as a string in the
fourth parameter:</p>
-<code>$js = 'onChange="some_function()"';<br />
+<code>$js = 'id="shirts" onChange="some_function();"';<br />
<br />
echo form_dropdown('shirts', $options, 'large', $js);</code>