</script>
	function addItem(bun) {//新增一個新的tr
		 var newTr = document.getElementById("testTbl").insertRow(); //插入新行  
		 var tb = document.getElementById("testTbl");//獲取id為testTbl的table
		  var rows = tb.rows;//取得這個table下的所有行
		   if(rows.length >1 ){
		   		 var cells = rows[1].cells.length;
		   		 for(var j=0;j<cells;j++){
		   		 	var cell = rows[1].cells[j];//獲取某行下面的某個td元素
		  		 	var newTd = newTr.insertCell();//在新新增的tr裡面新增td元素
		  		 	
		  		 	newTd.align="center";
		  		 	newTd.height="3";
		  		 	newTd.className="bg_table02";
		  		 	
		  		 	if(j==cells-1){//當新增的是最後一列時，新增對應的按鈕
		  		 		var inp = "<input type='button' name='save' value='儲存' class='button01' onclick='addItem(this)'/><input type='button' name='delete' value='刪除' class='button01' onclick='deleteItem(this)' disabled='disabled'/>"
		  		 		newTd.innerHTML=inp;
		  		 	}else{
		  			 	newTd.innerHTML = cell.innerHTML;
		  		 	}
		  		 	 var inps = newTr.getElementsByTagName('input'); // 從tr 物件中獲取所有input物件
		  		 	 for(var i = 0; i <inps.length; i++){
		  		 	 	if(i<(inps.length-2)){//最後兩個input不需將值置為null
		  		 	 		inps[i].value = ''; // 將每一個input的value置為空
		  		 	 	}
		  		 	 }
		   		 }
		   }
		   var nodes = siblingElems(bun);//獲取同輩元素
		   for(var i=0;i<nodes.length;i++){
		    	//nodes[i].style.display="block";
		    	nodes[i].disabled=false;
		   }
		   bun.disabled = true;
		   //bun.style.display="none";
		 //  nodes[i].disabled=true;
	}
	
	//獲取同輩元素
	function siblingElems(elem) {
		var nodes = [];
		var _elem = elem;
		while ((elem = elem.previousSibling)) {
			if (elem.nodeType == 1) {
				nodes.push(elem);
			}
		}
		var elem = _elem;
		while ((elem = elem.nextSibling)) {
			if (elem.nodeType == 1) {
				nodes.push(elem);
			}
		}
		return nodes;
	}

	//刪除一個tr
	function deleteItem(bun) {
		bun.parentNode.parentNode.parentNode
				.removeChild(bun.parentNode.parentNode);
	}
</script>