parentNode, removeChild, nextSibling, firstChild的练习

<!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>Untitled Document</title>
<style type="text/css">
body{font-size:12px;}
.peos{width:60px;height:20px;text-align:center;line-height:20px;float:left;border:1px solid #ccc;background:#fff;padding:2px;margin:0 5px;}
a.close{ width:10px;height:20px;margin-left:5px;float:right;text-indent:-9999em;overflow:hidden;background:url(../images/close.png) no-repeat center center;cursor:pointer;}
label{float:left;border:1px solid #ccc;margin:0 5px;}
label input{vertical-align:middle;}
.clear{clear:both;}
.inputtext{}
.activediv{height:30px;padding:2px 0;line-height:30px;border:1px solid #ccc;}
</style>
<script type="text/javascript">
window.onload = function(){
    var oBut = document.getElementById('cBut');
    var oTxt = document.getElementById('cValue');
    oBut.onclick = function(){
        oTxt.value += 'aaaa,';
    }
    var oMem = document.getElementById('member');
    var oRadio = oMem.getElementsByTagName('input');
    for(var i=0;i<oRadio.length;i++){
        oRadio[i].onclick = function(){
            //alert(this.nextSibling.nodeValue);
            oTxt.innerHTML += '<div class="peos"><a href="javascript:///" class="close" onclick="removeObj(this)">移除</a>' + this.nextSibling.nodeValue + '</div>';
        }
    }    
}

function removeObj(element){
    var oTar = element.parentNode.parentNode;
    if(oTar){
        oTar.removeChild(element.parentNode);
    }
}
</script>
</head>
<body>
<div id="member">
    <label for="m01"><input type="radio" name="mb" id="m01" />张三丰</label>
    <label for="m02"><input type="radio" name="mb" id="m02" />李四光</label>
    <label for="m03"><input type="radio" name="mb" id="m03" />赵强荧</label>
</div>

<div class="clear"></div><br />
<input type="submit" id="cBut" value="复制" /><br />
<div class="activediv">
    <div style="float:left;" id="cValue" ></div>
    <input type="text" style="border:1px;float:left;" name="" id="" />
</div>    

</body>
</html>