Tiny jQuery tooltip

tooltip.js

// Credit goes to Ashley Ford, since the idea of this snippet
// was taken from his blog article at http://papermashup.com/experimental-jquery-tooltips/
// this is a "self-sustained" tooltip, and i stripped the AJAX
// part since i don't need it for now

$(document).ready(function() {
    // Tooltip, probando
    $("[rel^='tooltip']").bind('mouseover', function(){
        var theMessage = "Tooltip: "+$(this).attr('rel').split(":", 2).slice(1, 2);
        $('<div class="tooltip">' + theMessage + '</div>').appendTo('body').fadeIn('fast');
        $(this).bind('mousemove', function(e){
            $('div.tooltip').css({
                    'top': e.pageY - ($('div.tooltip').height() / 2) - 5,
                    'left': e.pageX + 15,
                    'background-color' : 'silver',
                    'font-size' : 'smaller',
                    'width' : '300px',
                    'position' : 'absolute'
            });
        });
    }).bind('mouseout', function(){
        $('div.tooltip').fadeOut('fast', function(){
                $(this).remove();
        });
    });
});