Vertical Centering a block in IE7

Question

I\'m trying to get vertical centering a block in IE7 (IE6 if possible too), let me get one thing clear - I\'m not vertically centering the actual element, but the text with

Answer 1

This is a known bug. The way to fix this, which may not be applicable in your situation, is to add a Float to the element and have it display as inline-block to make hasLayout work in IE. I will also supply FF2 hacks to get around issues there too.

Fixed code:

a { 
    display: inline-block;
    display: -moz-inline-stack; /*FF2 Hack*/
    zoom: 1; /*IE inline-block star hack*/
    *display: inline; /*IE inline-block star hack*/
    float: left; 
    width: 100px;
    _height: 54px; /*FF2 Hack*/
    background: black;
    color: white;
    text-align: center; 
    text-decoration: none; 
    margin: 0px auto;
}

Hello superlongword 

EDIT

I didn't add a float, because I figured with the other hacks being used, it wouldn't matter.