Use CSS to change style
1.Use CSS to change style:
<head>
<script>
function StyleChange(StyleName)
{ChangeStyle.className=StyleName;}
</script>
<style>
<!--
.style1 { FONT-FAMILY: Georgia; }
.style2 { FONT-FAMILY: Arail; }
-->
</style>
</head>
<span onclick=StyleChange("style1") style="cursor:hand">Style1</span>
<span onclick=StyleChange("style2") style="cursor:hand">Style2</span>
<table>
<tr>
<td id=ChangeStyle>
1981-11-19
</td>
</tr>
</table>
2.another one:
<script language=javascript>
function FontChange(fontsize)
{
document.getElementById('fontchange').style.fontSize=fontsize+'px'
}
</script>
<a href="javascript:FontChange(48)">click here</a>
<span id="FontChange">1981-11-19</span>