<style type="text/css">
<!--
body {
	margin-left: 0px;
	margin-top: 0px;
	margin-right: 0px;
	margin-bottom: 0px;
	background-image: url();
}
-->
</style>
<script language='JavaScript' type='text/JavaScript'>
function preloadImg(src) 
{
  var img=new Image();
  img.src=src
}
preloadImg("img/top_close.jpg");

var displayBar=true;
function switchBar(obj) 
{
  if (displayBar) 
  {
    parent.frames['frame1'].rows="0,10,*";
    displayBar=false;
    obj.src="img/top_open.jpg";
    obj.title="打开上边管理菜单";
  } else 
  {
    parent.frames['frame1'].rows="115,10,*";
    displayBar=true;
    obj.src="img/top_close.jpg";
    obj.title="关闭上边管理菜单";
  }
}
</script>
<table width="100%" height="10" border="0" cellpadding="0" cellspacing="0">
  <tr>
    <td background="img/top_bg.gif"><img src="img/top_close.jpg" width="561" height="10" onclick='switchBar(this)' alt="关闭导般栏" /></td>
  </tr>
</table>
