$(document).ready(function() {
    $("#username").focus(function() {
        $(this).val("");
    });
    $("#password").focus(function() {
        $(this).remove()
        var element = $("#username").after("<input type=\"password\" id=\"password\" name=\"password\" value=\"\" />").next().focus()
        tooio4Pymes.Main.SubmitEnter(element);
    });
});