Center DIV with Dynamic Height

                                          * {
    margin: 0;
    padding: 0;
}
#page {
    display: table;
    overflow: hidden;
    margin: 0px auto;
}
*:first-child+html #page {
    position: relative;
}
/*ie7*/* html #page {
    position: relative;
}
/*ie6*/ #content_container {
    display: table-cell;
    vertical-align: middle;
}
*:first-child+html #content_container {
    position: absolute;
    top: 50%;
}
/*ie7*/* html #content_container {
    position: absolute;
    top: 50%;
}
/*ie6*/ *:first-child+html #content {
    position: relative;
    top: -50%;
}
/*ie7*/* html #content {
    position: relative;
    top: -50%;
}
/*ie6*/ html, body {
    height: 100%;
}
#page {
    height: 100%;
    width: 465px;
}
 
       
               
                     
your content