// JavaScript Document
function check_reg22()
{    if (document.form2.UserName.value == "")
        {
        alert("用户名不能为空!");
		document.form2.UserName.focus();
        return (false);
        }
 
  
 if (document.form2.password.value == "")
   {
        alert("密码不能为空!");
		document.form2.password.focus();
        return (false);
        }
           
}