css样式：标题在图片上，背景半透明效果，代码如下：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>文字显示在图片上</title>
<style type="text/css">
* {
border:none;
text-decoration:none
}
.wrap {
margin:8px;
position:relative
}
.photo a {
position:absolute;
display:block;
border:1px solid #555555;
}
.photo a:hover {
border:1px solid #FFFFFF;
}
.photo span {
width:200px;
background:#000;
display:block;
position:absolute;
bottom:0;
left:0;
color:#fff;
filter:alpha(opacity=50);
-moz-opacity:0.6;
opacity:0.6;
font:bold 12px/30px Verdana, Arial;
text-align:center;
cursor:hand;
}
.photo a:hover span {
text-decoration:underline
}
</style>
</head><body>
<div class="wrap">
<div class="photo"><a href="#"> <img src="images/specailimg.png" border="0" alt=""><span>标题层叠在图片上，标题文字和背景半透明。鼠标经过边框换色。</span></a></div>
</div>
</body></html>