[jQuery] How to underline text?

[jQuery] How to underline text?


I have
<script type="text/javascript">
$(document).ready(function()
{
$('#MyBox').css({ cursor: 'pointer', padding:'10px 10px 10px
10px',position : 'absolute', top : '290px',left : '10px', width :
'100px', margin : '0px 0px 0 0' });
...
...
..
});
</script>
and then in HTML body
<div id="MyBox">This text must be underline</div>
How can I underline that text above?
Thank you for help.
BB.