I think he means this:
CODE
<script language="JavaScript">function preview(){look = document.tbuild.testbed.value; {if( navigator.appVersion.indexOf('') !=-1 ) {location.href='';}document.open();document.write(look);document.close();}}</script><div align="center"><center><table border="0" cellpadding="0" cellspacing="0" width="100%" bgcolor="#FFFFFF"><tr><td align="center"><form name="tbuild"><p align="center"><a name="20"><textarea name="testbed" rows="20" cols="70"></textarea><br><input type="button" value=" View " onclick="preview()"></form></td></tr></table></center></div>
Doesn't work in Firefox, but if you have IE, then you're in luck.