Morphosis model how to do it

Question

This image manipulation is done using Flash, how can I do this using Html5 / jQuery. Drag the bar up or down to see the change.

http://tmagazine.blogs.nytimes.com/2009/09/15/model-morphosis-marc-jacobs-beauty-2/

Answer 1

You can create two tags <img>superimposed on each other, then adjust the height <div>containing the top when dragging the slider. ( <div>must have overflow:hidden)