<script type="text/javascript">
<!--
function popoffers()
{
window.open ("http://www.offerone.com","offerone");
window.open ("http://www.offertwo.com","offertwo");
// you could also use "_blank" for any new tab/window, or "_self" to replace the current page, though better using window.location if you're changing the current page.
}
//-->
</script>
-- above </head> --
<a href="#" onclick="popoffers(); return false;">Text</a>