//登录检验
function CheckForm()
{
  if(document.UserLogin.UserName.value=="")
  {
   alert("请输入用户名！");
   document.UserLogin.UserName.focus();
   return false;
  }
  if(document.UserLogin.Password.value == "")
  {
   alert("请输入密码！");
   document.UserLogin.Password.focus();
   return false;
  }
}
//显示隐藏层
function ShowLayer()
{
	//document.getElementById("Layer1").style.visibility='visible';
	document.getElementById("Layer2").style.visibility='visible';
}
function HiddenLayer()
{
    //document.getElementById("Layer1").style.visibility='hidden';
	document.getElementById("Layer2").style.visibility='hidden';
}