怎么样去除边框

<div id="nav">
<div id="nav1"><a href="index.asp"><img src="untitled/nav01.jpg"/ ></a></div>
<div id="nav2"><a href="index.asp"><img src="untitled/nav02.jpg"/ ></a></div>
<div id="nav3"><a href="index.asp"><img src="untitled/nav03.jpg"/ ></a></div>
<div id="nav4"><a href="index.asp"><img src="untitled/nav04.jpg"/ ></a></div>
<div id="nav5"><a href="index.asp"><img src="untitled/nav05.jpg" /></a></div>
</div>

CSS

#nav {width:440px; height:25px; float:left; margin-top:15px; margin-left:15px; }
#nav div {border-width:0px; border-style:none;}
#nav1 {width:71px; height:25px; float:left; }
#nav2 {width:101px; height:25px; float:left; }
#nav3 {width:102px; height:25px; float:left; }
#nav4 {width:89px; height:25px; float:left; }
#nav5 {width:61px; height:25px; border-style:none;}

为什么不能把边框去了？？？？

你在图片的代码里加一句 border="0"

就是

<div id="nav">
<div id="nav1"><a href="index.asp"><img src="untitled/nav01.jpg" border="0"/ ></a></div>
<div id="nav2"><a href="index.asp"><img src="untitled/nav02.jpg" border="0"/ ></a></div>
<div id="nav3"><a href="index.asp"><img src="untitled/nav03.jpg" border="0"/ ></a></div>
<div id="nav4"><a href="index.asp"><img src="untitled/nav04.jpg" border="0"/ ></a></div>
<div id="nav5"><a href="index.asp"><img src="untitled/nav05.jpg" border="0" /></a></div>
</div>

要把边框=0px

border:0px;