Edit File: admin.tpl
<iframe border="0" src="/nodeworx/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}