www.wysiwygwebbuilder.com

This explains how to obtain the addon, and to share extra commands like speed and transition effect. Please share other commands if you see something not listed.

Download the Lightbox addon for WB8: http://www.wysiwygwebbuilder.com/free_extras.html. When using a Slideshow or Photo Gallery on your page, to access jQuery Fancy Transitions go to Options > Type > Lightbox Gallery. Then set the Lightbox to jqfancytransitions.

To customize jqfancytransitions, add any of these to "Settings" (separate each variable with comma like shown):

effect: 'wave', (wave, zipper, curtain)
width: 400, (width of panel)
height: 300, (height of panel)
strips: 10, (number of strips)
delay: 3000, (delay between images in ms)
stripDelay: 60, (delay between strips in ms)
titleOpacity: 0.8, (opacity of title)
titleSpeed: 1000, (speed of title appearance in ms)
position: 'alternate', (top, bottom, alternate, curtain)
direction: 'left', (left, right, alternate, random, fountain, fountainAlternate)
navigation: false, (true for prev and next navigation buttons)
links: false, (show images as links)

This is only available in WB8 - another great reason to upgrade if you haven't already.