DOMDocument->importNode():IE中不識別該方法，但在FF中識別
DOMDocument->importNode() -- Import node into current document
說明
class DOMDocument {
DOMNode importNode ( DOMNode importedNode [, bool deep] )
}
This function returns a copy of the node to import and associates it with the current document.
參數
importedNode:The node to import.
deep:If set to TRUE, this method will recursively import the subtree under the importedNode.
返回值
The copied node.
異常
DOMException is thrown if node cannot be imported.
例子：
<html>
<head>
<title></title>
<script type="text/javascript">
function test(){
var divObj=document.createElement("div");
divObj.appendChild(document.createTextNode("divtest"));
var spanObj=document.createElement("span");
spanObj.appendChild(document.createTextNode("spantest"));
divObj.appendChild(spanObj);
//document.body.appendChild(divObj);
var node=document.importNode(divObj,true);
document.body.appendChild(node);
}
window.οnlοad=test;
</script>
</head>
<body>
</body>
</html>