Fórum CodigosnaWeb.com

<script type="text/javascript">
function muda(onde,figura) {
if(onde=="tabela") {
document.getElementById("tabela").style.backgroundImage="url("+figura+")";
}
if(onde=="janela") {
document.body.background=figura;
}
}
</script>

<a href="javascript:muda('tabela','figura.jpg')">mudar background da tabela</a>
<a href="javascript:muda('janela','figura.jpg')">mudar background da página</a>

<table width="200" height="200" id="tabela" background="">
<tr><td></td></tr>
</table>