If you would like to align an element vertically within a parent element, i use the following script.

<script type="text/javascript">



if (typeof window.innerWidth != 'undefined')

{

bh = window.innerHeight

}

if (typeof document.getElementById("myElementID").offsetHeight != 'undefined')

{

mbh = document.getElementById("myElementID").offsetHeight

}



document.getElementById("myElementID").style.marginTop=Math.round((bh-mbh)/2)+'px');



</script>

This will arrange an element in the middle of a webpage.