function login_submit()
 {
   var returnvalue=false;
   if (document.loginform.userid.value=="")
    {
      alert("Please enetr your User ID")
      document.loginform.userid.focus()
    }
   else if (document.loginform.password.value=="")
    {
      alert("Please enetr your Password")
      document.loginform.password.focus()
    }  
   else
    { 
     document.loginform.submit()
    }
    return returnvalue
    
  }