function $(id){return document.getElementById(id);}
function ShowMailList(){
var IsShowMailList = $("MailList").style.display;
if(IsShowMailList == "none"){
$("MailList").style.display = "block";
$("SelectMail").innerText = "点击这里关闭列表";
}else{
$("MailList").style.display = "none";
$("SelectMail").innerText = "点击安全登陆邮箱";
}}
function HiddenMailList(){
$("MailList").style.display = "none";
$("SelectMail").innerText = "点击安全登陆邮箱";
}