function registerme()
{
 var username   = document.getElementById('username_').innerHTML;
 var email      = document.getElementById('email_').innerHTML;
 var password1  = document.getElementById('password1_').innerHTML;
 if(username != "OK!" || email != "OK!" || password1 != "OK!")
  document.getElementById('submit').disabled=true;
 else
  document.getElementById('submit').disabled=false;
}