Выравнивание по центру

by Евгений

HTML

<div class="leftdiv">
    <div class="menu"></div>
    <div class="helper"></div>
</div>

CSS

.leftdiv {
  position: absolute;
  top: 0;
  bottom: 60px;
  left: 0;
  right: 250px;
  border: 1px solid #dd0;
  background: #cecece;
}

.menu {
  display: -moz-inline-box;
  display: inline-block;
  vertical-align: middle;
  width: 30px;
  height: 300px;
  border: 1px solid #080;
  background: #dbdbdb;
  zoom: 1; //display:inline
}

.helper {
  display: -moz-inline-box;
  display: inline-block;
  height: 100%;
  width: 0px;
  vertical-align: middle;
  zoom: 1; //display:inline
}