$(document).ready(function() {

    $("#fixed-navi").hover(function() {

        $(this).addClass("hover").stop()
        /* Add class of "hover", then stop animation queue buildup*/
        $(this).animate({
            bottom: '0px'
        }, 400);
        /* this value of "200" is the speed of how fast/slow this hover animates */
    }

    ,
    function() {

        $(this).removeClass("hover").stop()
        /* Remove the "hover" class , then stop animation queue buildup*/
        $(this).animate({
            bottom: '-40px'
        }, 200);

    });
});