<div class="wizzi"><img src="avatar"></div>
<div class="wizzi_menu">123123123></div>

.wizzi:hover .wizzi_menu {display:block;}
.wizzi_menu {display:none;}

<div class="profile">
<ul class="p_menu"><li>Профиль</li><li>Личные сообщения</li></ul>
<img src="http://cs540108.vk.me/c7006/v7006726/b6f9/3hhyICsRotA.jpg" width="50" height="50" />
</div>

.profile {position:relative;width:150px;padding-top:20px;text-align:center;}
.profile ul {position:absolute;top:10px;list-style:none;margin:0;padding:0;text-align:left;opacity:0;}
.profile ul {transition:all 0.3s ease;-webkit-transition:all 0.3s ease;-moz-transition:all 0.3s ease;}
.profile:hover ul {top:-30px;opacity:1;}
.profile:hover img {cursor:pointer;}