Inframe com altura e largura automatica

Segue o codigo..

<script><br>function changeContent()<br>{<br>document.getElementById('contentDIV').innerHTML = window.frames['contentFRAME'].document.getElementsByTagName('html')[0].innerHTML;<br>}<br></script><br><br><div id = "contentDIV"><br></div><br><iframe id = "contentFRAME" name = "contentFRAME" src ="query.php" onLoad = "changeContent()" style = "height:0; width:0; border-width:0;"></iframe>