$(document).ready(function(){
 $(".top div a").hover(function(){
  $("img",this).stop().animate({top:"-56px"},{queue:false,duration:200});
 },function(){
  $("img",this).stop().animate({top:"0px"},{queue:false,duration:200});
 });
 
 $(".bottom div a").hover(function(){
  $("img",this).stop().animate({left:"-122px"},{queue:false,duration:200});
 },function(){
  $("img",this).stop().animate({left:"0px"},{queue:false,duration:200});
 });
})

<style type="text/css">
body{margin:0 auto;font:12px/1.5 tahoma,arial,5b8b4f53;color:#828282;background:#fff}
body,div,p,span,a,ul,li,b,form,input,h2,h3,img{margin:0;padding:0}
ul,li{list-style-type: none}
img{border:none;}

.top{width:500px;margin:20px auto}
 .top div{width:122px;height:56px;float:left;margin-left:5px;display:inline;border:1px #ccc solid;position:relative;overflow:hidden}
  .top div img{position:absolute}
.bottom{width:500px;margin:20px auto}  
 .bottom div{width:122px;height:56px;float:left;margin-left:5px;display:inline;border:1px #ccc solid;position:relative;overflow:hidden}
  .bottom div img{position:absolute} 
</style>

<div class="top">
 <div><a href="http://www.php100.com/"  target="_blank" rel="nofollow"><img src="images/shu.jpg" /></a></div>
</div>

<div class="bottom">
 <div><a href="http://www.hzhuti.com/" target="_blank" rel="nofollow"><img src="images/heng.jpg" /></a></div>
</div>

<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
<script type="text/javascript">
$(document).ready(function(){
 $(".top div a").hover(function(){
  $("img",this).stop().animate({top:"-56px"},{queue:false,duration:200});
 },function(){
  $("img",this).stop().animate({top:"0px"},{queue:false,duration:200});
 });
 
 $(".bottom div a").hover(function(){
  $("img",this).stop().animate({left:"-122px"},{queue:false,duration:200});
 },function(){
  $("img",this).stop().animate({left:"0px"},{queue:false,duration:200});
 });
})
</script>