<div id="container"><div id="first"></div><div id="second"></div></div>

var $first=$('#first');var $second=$('#second');(function(){move1();move2();})()function move1(){$first.animate({"left":220,"top": 0},400).animate({"left":220,"top":220},400).animate({"left":0,"top":220},400).animate({"left":0,"top":0},function(){move1();})}function move2(){$second.animate({"right":220,"bottom": 0},400).animate({"right":220,"bottom":220},400).animate({"right":0,"bottom":220},400).animate({"right":0,"bottom":0},function(){move2();})}