希望的效果如图：
网上找了各纯css的 做了下修改：
代码如下：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<style>
.logo1{
width:150px;
height:60px;
float:left
}
a.alt{
position:relative;
background-color:#fff;
float:left;
width:158px;
height:60px;
border:1px solid #ccc;
text-align:center;
text-decoration:none;
color:#333333;
}
a.alt:hover{background:#fff; text-decoration:none;z-index:2;}
a.alt div{display:none;}
a.alt:hover div{
display:block;
position:absolute;
top:-1px;
left:-300px;
width:300px;
height:300px;
border:2px solid #000;
z-index:1;
background-color:#fff;
}
.brandAlertCen{
border:1px solid #000;
width:300px;
height:300px;
}
</style>
<div style="margin-left:500px;width:300px;height:auto">
<div class="logo1"><a class='alt' href="#"><div class="brandAlertCen">专注于网页特效及广告代码。<br /><img src="http://p0.jmstatic.com/pop_feature/12812/new_pre_pic.png" width="280" /></div><img src="http://p_w_picpaths.253.com/upload/brandImages/139865426888345.jpg" /></a></div>
<div class="logo1"><a class='alt' href="#"><div class="brandAlertCen">专注于网页特效及广告代码。<br /><img src="http://p0.jmstatic.com/pop_feature/12812/new_pre_pic.png" width="280" /></div><img src="http://p_w_picpaths.253.com/upload/brandImages/139865426888345.jpg" /></a></div>
<div class="logo1"><a class='alt' href="#"><div class="brandAlertCen">专注于网页特效及广告代码。<br /><img src="http://p0.jmstatic.com/pop_feature/12812/new_pre_pic.png" width="280" /></div><img src="http://p_w_picpaths.253.com/upload/brandImages/139865426888345.jpg" /></a></div>
<div class="logo1"><a class='alt' href="#"><div class="brandAlertCen">专注于网页特效及广告代码。</div><img src="http://p_w_picpaths.253.com/upload/brandImages/139865426888345.jpg" /></a></div>
<div class="logo1"><a class='alt' href="#"><div class="brandAlertCen">专注于网页特效及广告代码。</div><img src="http://p_w_picpaths.253.com/upload/brandImages/139865426888345.jpg" /></a></div>
</div>demo下载地址：
http://down.51cto.com/data/1511860
训练营
