You can change the transition effect of your already created slideshow. Follow these steps to do so:
1. Select the slideshow which you want to modify, and then click ⛭ to open slideshow properties.
Tip: You also change the mode of the images by clicking Element settings on the properties toolbar.
2. Select a transition effect for your slideshow from the drop-down. The following transitions are available:
None - No transition effect is applied.
Dissolve - Gradual transition from one image to another.
Fade - Image gradually disappears and the next image gradually appears.
Slide from left - The next image slides in from the left.
Slide from top - The next image slides in from the top.
3. Save your page when you're done!