jQuery/javascript - Input fields (user,pass) just like twitter's login?

Question

How can I achieve the same effect like twitter\'s log-in form (the top on the right) - when you click on the username/pass the value \"username\" stays there until you enter tex

Answer 1

Thanks Garry. To eliminate the time lag in between user's typing and fading of default text, you can replace the focus function given above with following function

function focus() {
        if ($(this).val()) hide();
        else show();
    };

It eliminates the time lag.........