Challenge! images slider and compare

Hello all..

I would appreciate if someone can help me in direction of achieving this technique in Edge

http://online.wsj.com/article/SB10000872396390443843904578024404192099308.html?mod=WSJ_hpp _MIDDLENexttoWhatsNewsFifth

I guess the use of external draggable should be in order.. But in the links it works nicely in the tablet too..

elijahu.