equalize-and-set-height.js

// set the empty variable
var maxHeight = 0;

// get the height of the tallest element of your selector e.g. tallest slide
$(yourelemselector).each(function(){
   var thisH = $(this).height();
   if (thisH > maxHeight) { maxHeight = thisH; }
});

// set all of the elements with your selector to this tallest elements height e.g. eqalising the height of slides
$(yourelemselector).height(maxHeight);