<iframe border="0" 
        src="/siteworx/sitepad" 
        style="width: 100%;" 
        id="internal" 
        frameborder="0" 
        marginheight="0" 
        marginwidth="0"
        onload="javascript:resize_iframe();"></iframe>
{literal}
<script language="JavaScript">
<!--
function resize_iframe()
{

  var height=window.innerWidth;//Firefox
  if (document.body.clientHeight)
  {
    height=document.body.clientHeight;//IE
  }
  //resize the iframe according to the size of the
  //window (all these should be on the same line)
  document.getElementById("internal").style.height=parseInt(height-
  document.getElementById("internal").offsetTop-8)+"px";
}

// this will resize the iframe every
// time you change the size of the window.
window.onresize=resize_iframe; 

//-->
</script>
{/literal}