/*
 * verify form values &
 * hash Password
 */
function hash(){
  // get 'userid' field
 var userName=document.getElementById('userName');
 if(!userName){return};
  if(!userName.value){showError(userName,'Enter your username');return false};
  
  // get 'password' field
  // we used to encode the password but meh. whatever.
  //var psw=document.getElementById('password');
  //if(!psw){return};
  //if(!psw.value){showError(psw,'Please enter your password');return false};
  // set password hash
  //psw.value=hex_md5(psw.value);
  return true;
}
/*
 * display error messages
 */
function showError(obj,message){
  alert(message);
  obj.focus();
}