JavaScript实现表单Radio单选框联动切换效果

<!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=gb2312" />
<title>Radio切换效果</title>
<style>
*{margin:0;padding:0;}
body{margin:50px;font-size:12px;color:#666;}
li{list-style:none;}
div{width:210px;}
#tab1 ,#tab2{width:398px;height:34px;border:1px #cfedff solid;border-bottom:0;background:url(images/title.gif) repeat-x;}
#tab1 ul ,#tab2 ul{margin:0;padding:0;}
#tab1 li,#tab2 li{float:left;padding:0 30px;height:34px;line-height:34px;text-align:center;border-right:1px #ebf7ff solid;cursor:pointer;}
#tab1 li.now,#tab2 li.now{color:#5299c4;background:#fff;font-weight:bold;}
.tablist{width:378px;height:100px;padding:10px;font-size:14px;line-height:24px;border:1px #cfedff solid;border-top:0;display:none;}
.block{display:block;}
</style>
</head>
<body>
<h1>Radio切换</h1>
<style type="text/css">
 fieldset{width:378px;border:1px #B0C0D1 solid;padding:10px;}
 legend{background:#B0C0D1;padding:4px 10px;color:#fff;}
 #c{margin-top:10px;}
 .c1,.c2{width:378px;line-height:20px;}
 .c1{color:#014CC9;}
 .c2{color:#7E6095;}
 h3{font-size:16px;padding:5px 0;}
 .red{color:#BD0A01;}
</style>
<script type="text/javascript">
function radioShow(){
 var myradio=document.getElementsByName("myradio");
 var div=document.getElementById("c").getElementsByTagName("div");
 for(i=0;i<div.length;i++){
  if(myradio[i].checked){
   div[i].style.display="block";
   }
   else{
   div[i].style.display="none";
   }
  }
 }
</script>
<form name="ck">
<fieldset>
 <legend>I'm Radio</legend>
  <h3>请选择：</h3>
  <label for="r1" class="red"><input name="myradio" id="r1" type="radio" value="" checked="checked" onclick="radioShow();" />XML教程</label>
  <label for="r2" class="red"><input name="myradio" id="r2" type="radio" value="" onclick="radioShow();" />浏览器脚本</label>
<div id="c">
 <div class="c1">
 <label for="xml"><input name="c2" type="checkbox" id="xml" value="" />XML</label>
  <label for="dtd"><input name="c2" id="dtd" type="checkbox" value="" />DTD</label>
  <label for="xmldom"><input name="c2" id="xmldom" type="checkbox" value="" />XML DOM</label>
  <label for="xsl"><input name="c2" id="xsl" type="checkbox" value="" />XSL</label>
  <label for="xslt"><input name="c2" id="xslt" type="checkbox" value="" />XSLT</label>
  <label for="xslfo"><input name="c2" id="xslfo" type="checkbox" value="" />XSL-FO</label>
  <label for="xpath"><input name="c2" id="xpath" type="checkbox" value="" />XPath</label>
  <label for="xquery"><input name="c2" id="xquery" type="checkbox" value="" />XQuery</label>
  <label for="xlink"><input name="c2" id="xlink" type="checkbox" value="" />XLink </label>
  <label for="xpointer"><input name="c2" id="xpointer" type="checkbox" value="" />XPointer</label>
  <label for="schema"><input name="c2" id="schema" type="checkbox" value="" />Schema</label>
  <label for="xforms"><input name="c2" id="xforms" type="checkbox" value="" />XForms</label>
 </div>
 <div class="c2" style="display:none;">
 <label for="js"><input name="c3" id="js" type="checkbox" value="" />JavaScript</label>
  <label for="hd"><input name="c3" id="hd" type="checkbox" value="" />HTML DOM</label>
  <label for="dhtml"><input name="c3" id="dhtml" type="checkbox" value="" />DHTML</label>
  <label for="vbs"><input name="c3" id="vbs" type="checkbox" value="" />VBScript</label>
  <label for="ajax"><input name="c3" id="ajax" type="checkbox" value="" />AJAX</label>
  <label for="e4x"><input name="c3" id="e4x" type="checkbox" value="" />E4X</label>
  <label for="wml"><input name="c3" id="wml" type="checkbox" value="" />WMLScript</label>
 </div>
</div>
</fieldset>
</form>
</body>
</html>