Edit in JSFiddle

$("#banner").click(function() {
	$("#menu").animate({
		height: "toggle"
	}, "slow");
});
#banner {
    width: 250px;
    height: 50px;
    color: #fefefe;
    background-color: #0e0d0e;
    text-align: center;
    font-size: 25px;
}

#banner:hover {
    cursor: pointer;
}

#menu {
    width: 250px;
    background-color: #ebc621;
    color: #fefefe;
}
<div id="banner">Rippmenüü</div>
<div id="menu" style="display: none">
	1. Siin <br />
	2. On <br />
	3. Mingi <br />
	4. Menüü <br />
</div>