See the demo site
comparison of 2 images by moving a cursor
{up imagecompare}< img src=before.jpg >< img src=after.jpg >{/up imagecompare}
{up imagecompare}
{/up imagecompare}
image-compare
id
class
style
initVisibleRatio
interactionMode drag mousemove click
addSeparator Yes No
addDragHandle Yes No
animationDuration (ms)
animationEasing linear swing
precision