Change Style with JS

[moiseszaragoza]

I have a TD that i want to change the style on a TD when i click on it.

<script language="javascript" type="text/javascript">
		function showstuff(boxid){
		      document.getElementById('td_Contact').style="new";
		}		
	</script>

<table width="100" >
						<tr>
							<td class="tab_normal" id="td_Contact">
								<a onClick="showstuff('Contact')" class="tab_nav">Contact</a>
							</td>

Thanks for all the help