​x
 
<html>
<head>
<script type="text/javascript" src="/jquery/jquery.js"></script>
<script type="text/javascript"> 
$(document).ready(function(){
  $("#start").click(function(){
    $("#box").animate({height:300},"slow");
    $("#box").animate({width:300},"slow");
    $("#box").queue(function () {
      $(this).css("background-color","red");  
      $(this).dequeue();
    });
    $("#box").animate({height:100},"slow");
    $("#box").animate({width:100},"slow");
  });
  $("#stop").click(function(){
    $("#box").clearQueue();
  });
});
</script>
</head>
<body>
​
<p><button id="start">Start Animation</button><button id="stop">Stop Animation</button></p>
<div id="box" style="background:#98bf21;height:100px;width:100px;position:relative">
</div>
 
</body>
</html>
​