por favor necesito rotar unos flash cada treinta segundos
<td>
<script language="JavaScript">
<!--
banners = new Array();
banners[0] = "banners/concierto001.swf";
banners[1] = "banners/danza001.swf";
totalbanners = banners.length;
var ahora = new Date()
var segundos = ahora.getSeconds()
var ad = segundos % totalbanners;
seleccionado = banners[ad];
document.write('<EMBED src=' + seleccionado + ' loop=true quality=high width=468 height=60 TYPE="application/x-shockwave-flash" PLUGINSPAGE="http://www.macromedia.com/shockwave/download/index.cgi?P1_Prod_Version=ShockwaveFlash"></EMBED>');
// -->
</script></td>