Hello! I am having trouble with script.acoul.us with dreamweaver's built in rollover image.

HTML Code:
<div id="test_div">TEST</div>
<a href="#" onclick="Effect.Fade('test_div'); return false;">Effect.Fade</a> | 
<a href="#" onclick="Effect.Appear('test_div'); return false;">Effect.Appear</a>

<a href="recovery_process.html" onmouseout="MM_swapImgRestore();Effect.Fade('test_div'); return false;" onmouseover="MM_swapImage('process','','images/vnav/rollover/recovery_process_hover.png',1);Effect.Fade('test_div'); return false;"><img src="images/vnav/rollover/recovery_process.png" alt="Recovery Process" name="process" border="0" id="process" /></a>
<div id = "test_div"><img src="image1.jpg" />
I tried to replace onclick to onmouseover so that when I mouseover the image, it will do the rollover thing and will do the effect. (In my case, another image will slide/appear/fade below the rollover image).

Does anyone have any idea about this? I tried googling script.acoul.us +rollover image and I didn't get any decent answers.