Vertical alignement of lists in FF

In FF the vertical alignment of my numbers in an ordered list are at the bottom. In IE6 it looks fine and the vertical-align: middle; works just fine. Any ideas on how to adjust this property in FF. I have a table inside my <li> and I am sure it is related to that but I need to keep them there.

My CSS:


 ol.movie_list li{
    padding:0px 0px 0px 0px;
    margin:0px 0px 0px 0px;
    vertical-align:middle;
    display:list-item;
    list-style-position:outside;
    font-weight:bold;
  }

  li.blue_border {
    padding:0px 0px 0px 0px;
    margin:0px 0px 0px 0px;
    background-color:#FFFFFF;
    border:1px solid #F2F2F2;
    cursor: move;
    height:20px;
  }