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<html>
<head>
<!--省略了topic和htopic的定义-->
</head>
<body>
<div id="main">
<div class="topic">
</div>
<div class="htopic">
<div class="topic">
</div>
<div class="htopic">
</div>
</div>
</div>
</body>
</html>
function mgoto(index)
{
var usrcon = document.getElementById("main").childNodes[1];
for (var i = 0; i < usrcon.childNodes.length; ++i)
if (i == index)
usrcon.childNodes[i].className = topic;
else
usrcon.childNodes[i].className = htopic;
}
function mgoto(index)
{
//查找id=main下的第2个div下的所有div
var usrcon = document.getElementById("main").getElementsByTagName("div")[1].getElementsByTagName("div");
for (var i = 0; i < usrcon.length; ++i)
{
usrcon[i].className=(i== index)?'topic':'htopic';
}
}
usrcon.childNodes[i].className = 'topic';
else
usrcon.childNodes[i].className = 'htopic';
usrcon.childNodes[i].className = topic;
else
usrcon.childNodes[i].className = htopic;
<div id="main">
<div class="topic">
</div>
<div class="htopic">
<div class="topic">
</div>
<div class="htopic">
</div>
</div>
</div>
<div>
<div class="topic">
</div>
<div id="main" class="htopic">
<div class="topic">
</div>
<div class="htopic">
</div>
</div>
</div>
function mgoto(index)
{
//查找id=main下的第2个div下的所有div
var usrcon = document.getElementById("main").getElementsByTagName("div")[1].getElementsByTagName("div");
for (var i = 0; i < usrcon.length; ++i)
{
usrcon[i].className=(i== index)?topic:htopic;
}
}