Scriptaculous Effect.multiple

I have a problem applying Effect.multiple. It always says something is undefined. If I apply multiple Shrinks, it says “ is undefined”. If I apply multiple Fades, it says “getInlineOpacity is undefined”. And so on…

As you can see, normal combination effects work on my site. Just click the second link to see.

<a href="#" onclick="new Effect.multiple('temp', Effect.Shrink, { speed: 1 });">Apply Effect.multiple</a>
<br />
<a href="#" onclick="new Effect.Fade('temp');">Apply Effect.Fade</a>

<div id="temp">
	<div id="1">1</div>
	<div id="2">2</div>
	<div id="3">3</div>