function openwin(url){
  hWnd_reader=window.open(url,null,"");
  hWnd_reader.focus();
  }
 function getNames(obj,name,tij)
 { 
  var p = document.getElementById(obj);
  var plist = p.getElementsByTagName(tij);
  var rlist = new Array();
  for(i=0;i<plist.length;i++)
  {
   if(plist[i].getAttribute("name") == name)
   {
    rlist[rlist.length] = plist[i];
   }
  }
  return rlist;
 }
  function butong_net(obj,name)
  {
   var p = obj.parentNode.getElementsByTagName("td");
   var p1 = getNames(name,"f","div");
   for(i=0;i<p1.length;i++)
   {
    if(obj==p[i])
    {
     p[i].className = "s";
     p1[i].className = "dis";
    }
    else
    {
     p[i].className = "";
     p1[i].className = "undis";
    }
   }
  }
function showRandomImage(){
	var idx = Math.ceil(Math.random()*10);
	document.write("<img src='images/"+idx+".jpg' align='absbottom'/>");
}
function Mail_sub()
{
	var blback=true;
	if(blback==true && document.all.form1.LoginName.value=="") 
		{
			alert("请输入邮箱帐号！");
			blback=false;
		}
	if(blback==true && document.all.form1.Password.value=="")
		{
			alert("请输入用户密码！");
			blback=false;
		}
	if (blback==true)
		{
			document.all.form1.action="http://mail.gsli.edu.cn/cgi-bin/login"
			document.all.from1.submit();
		}
}
function Oa_sub()
{
	var blback=true;
	if(blback==true && document.all.form2.T1.value=="") 
		{
			alert("请输入用户标识号！");
			blback=false;
		}
	if(blback==true && document.all.form2.T2.value=="")
		{
			alert("请输入用户密码！");
			blback=false;
		}
	if (blback==true)
		{
			document.all.form2.action="http://oa.gsli.edu.cn/default.asp?method=login"
		
		}
}
function mail(){
	mailer.style.display='';
	mailer.style.bgcolor='#cc1122';
	menhuer.style.display='none';
	menhuer.style.bgcolor='';
	document.getElementById('Showbackground').style. background='url(images/mail_bg.jpg)';
}
function menhu(){
	mailer.style.display='none';
	menhuer.style.display='';
	mailer.style.bgcolor='';
	menhuer.style.bgcolor='#336699';
	document.getElementById('Showbackground').style. background='url(images/menhu_bg.jpg)';
}