自由调整编辑框Textarea的高度

<script>
 // 修改编辑栏高度 

 function admin_Size(num, objname)
 {
 	var obj = document.getElementById(objname)
 	if (parseInt(obj.rows) + num >= 3)
 	{
 		obj.rows = parseInt(obj.rows) + num;
 	}
 	if (num > 0)
 	{
 		obj.width = "90%";
 	}
 }
</script>
<table>
	<tr>
		<td class="forumrowHighlight" align="right" valign="top">
			模板_结束标记部分
		</td>
		<td class="forumrowHighlight">
			<textarea name="Skin_Footer" ID="Skin_Footer" style="width:100%;" rows="3">
			</textarea>
			<a href="javascript:admin_Size(-3,'Skin_Footer')">减少</a>
			<a href="javascript:admin_Size(3,'Skin_Footer')">增加</a>
		</td>
	</tr>
</table>