Practical solution to center vertically and horizontally in HTML that works in FF, IE6 and IE7

Question

What can be a practical solution to center vertically and horizontally content in HTML that works in Firefox, IE6 and IE7?

Some details:

• I am lookin

Answer 1

From http://www.webmonkey.com/codelibrary/Center_a_DIV

#horizon        
    {
    text-align: center;
    position: absolute;
    top: 50%;
    left: 0px;
    width: 100%;
    height: 1px;
    overflow: visible;
    display: block
    }

#content    
    {
    width: 250px;
    height: 70px;
    margin-left: -125px;
    position: absolute;
    top: -35px;
    left: 50%;
    visibility: visible
    }


   

      
This text is
DEAD CENTRE
and stays there!