Lightbox in CMS HTML Widget not working

[Disco_Stu]

I'm displaying thumbnail images in an HTML widget on CMS and have it set to display the enlarged lightbox image on click. I added some alerts in the lightbox function to display the incoming parms and the thumbnail click is calling the lightbox function with the correct parms but the lightbox image is not being displayed.

I use this approach on other pages in my forums and it works fine but for some reason it does not on CMS.

Any suggestions?

Update:

It seems to work when I add the lightbox function directly to the vbcms_page template rather than the HTML widget.

Update2:

Strange. Sometimes when I click on an image lightbox just displays a blank image and other times it displays the correct enlarged image. This only happens on the CMS page. Works 100% on other pages. There must be some conflicting code in the CMS template or php file.