//------------------------- 
function Put_Focus( id_){
  var Obj = document.getElementById( id_);
  if( Obj)
    Obj.focus();
  else
    setTimeout( "Put_Focus('" +id_ +"')", 100);
}
//----------------------------
function changeType(textfield){
  if (textfield.type.toLowerCase() != "password" ){
    var textfieldPWD = document.createElement("input" );
    textfieldPWD.setAttribute("name", "password" );
    textfieldPWD.setAttribute("type", "password" );
    textfieldPWD.setAttribute("maxlength", "40" );
    textfieldPWD.setAttribute("size", "15" );
    //-- Ajout ID 
    textfieldPWD.id ="I_PWD"; 
    textfield.parentNode.replaceChild(textfieldPWD, textfield);
    // Appel la fonction Focus 
    setTimeout( "Put_Focus('I_PWD')", 100);
  }
}