Hey you can try this out and see if it works for you, I haven't tried this out myself so I wont be able to tell you whether this thing works or not. But hey why don't you give it a try and see if it works.
Code:
<script language="javascript" src="/filesearchhover.js" type="text/javascript"></script>
onmouseover="showtrail('http://www.google.com/file_thumbview_approve/64097/2/istockphoto_64097_dirty_metal_grate.jpg','Dirty metal grate','Dirty metal grate','3.0000','0','1',203);"
onmouseout="hidetrail();"
The above sentence is based on the parameters like showtrail(imagename,title,description,ratingaverag e,ratingnumber,showthumb,height) , so based on this the image gets load and the mouseover and the mouseout function will help you to scroll up and down.
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