fade

var Header = {
    addFade: function( selector ) {
        var cls = "fake-hover";
        $('<span class="' + cls + '"></span>')
            .css("display", "none")
            .prependTo( $(selector) ); 
        $(selector + " a").bind( "mouseenter", function() {
            $(selector + " ." + cls).fadeIn( "slow" )
        });
        $(selector + " a").bind( "mouseleave" , function() {
            $(selector + " ." + cls).fadeOut( "slow" );
        });
    }
};
$(function(){
    var act = "entrance-logo";
    $.event.add(window, "load", function() {
        $("#" + act).animate(
            { top: '45%', }, { duration: 2000, easing: 'easeOutQuad', } );
    });
    Header.addFade("#" + act);
});