Math Example Using DHTML
span.fr { position:relative; width:1px; margin-top:expression(-(this.children(1).offsetHeight-8) +'px’); top:expression((this.children(1).offsetHeight-8) +'px’);}
div.nu { border-bottom:1px solid black; text-align:center; behavior:url(nu.htc);}
div.de { text-align:center; behavior:url(de.htc);}
<fr> <nuɭ</nu> <deɮ</de> </fr>
<span class=‘fr’> <div class=‘nu’ɭ</div> <div class=‘de’ɮ</div> </span>