HTML:
<div id='container' class='flexcontainer'>
  <div id="a" style="background: #ff0077" class="transition left"></div>
  <div id="b" style="background: #0066ff" class="transition right"></div>
  <div id="c" style="background: #ffee00" class="transition left"></div>
  <div id="d" style="background: #22aaaa" class="transition right"></div>
</div>

Javascript:
where = $("#a").position();
lefty = where.left
topy = where.top

function revert(){
  $("#a").animate({left: lefty, top: topy}, 3000);
}