Next/Previous Image - How?

[sean14592]

I have 2 images which will be used as a forward and backward arrow, however I don't know how to make them change the image.

 

heres my Javascript:

 

slideshow.js

http://pastebin.com/m2d7c15c4

 

Javascript code to show slideshow

<script type="text/javascript">
                    
      //new fadeshow(IMAGES_ARRAY_NAME, slideshow_width, slideshow_height, borderwidth, delay, pause (0=no, 1=yes), optionalRandomOrder)
      new fadeshow(fadeimages, 511, 205, 0, 3000, 1, "")
                     
</script>