<script>

// select all desired input fields and attach tooltips to them
$("#postbox :input").tooltip({

    // place tooltip on the right edge
    position: "center right",

    // a little tweaking of the position
    offset: [-2, 10],

    // use the built-in fadeIn/fadeOut effect
    effect: "fade",

    // custom opacity setting
    opacity: 0.7

});

</script>

<form id="postbox" action="#">