addDOMLoadEvent(newsletter_signup);

function newsletter_signup()
{
    if($('newsletter_name')&&$('newsletter_email')) {
        Event.observe($('newsletter_name'), 'focus', function(e)     {
            if(this.getValue()=='Your name') this.value = "";
        }, false);

        Event.observe($('newsletter_email'), 'focus', function(e)     {
            if(this.getValue()=='Your email address') this.value = "";
        }, false);
    }
}