adding thumbnails to image slideshow with jquery cycle

I am trying to add thumbnails to my image slideshow done with malsups jquery cycle.
its here: http://jquery.malsup.com/cycle/pager2.html
All the functionality works but I can’t see the images, just broken image links as placeholders.

I think its in this bit of code thats not working (might be wrong though)

pagerAnchorBuilder: function(idx, slide) {
return ‘

• <img src=”‘ + slide.src + ‘” width=”50″ height=”50″ />

‘;

I was wondering wether I have to change the arguments that are passed into the function (idx and slide)?

If anybody got any ideas on how to go about it that would be great? thanks.