function switchTo(num)
  {
  if (num){
      document.getElementById('password_text').style.display="none";
      document.getElementById('password').style.display="inline";
            document.getElementById('password').value="";
      document.getElementById('password').focus();
  } else {
           document.getElementById('password').style.display="none"; 
document.getElementById('password_text').style.display="inline";
  }
   }