JavaScript Undefined Error

I'm getting this JavaScript error with IE explorer:

'Slidesh开发者_如何学运维ow is undefined'

The error points to this bit of code:

<script type="text/javascript">
new SlideShow('listOfImages');
</script>

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May be you didn't include the required javascripts files for mootools

http://www.electricprism.com/aeron/slideshow/

http://code.google.com/p/slideshow/

for example, include mootools, and slideshow

<script type="text/javascript" src="js/mootools.js"></script>
<script type="text/javascript" src="js/slideshow.js"></script>

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SlideShow is a name of an object constructor. It has to be defined prior to its use in the script tag either in the embedded script or in a file loaded by the tag