script to resize iframe in wordpress

iframe_wordpress.js

<script language="JavaScript"> 
function frameResize(frameObj) {
    var frameHeight;
 
    // Reset the height back to it's original (shrink the frame)
    frameObj.height = '800px';
 
    // Set the frame height to match the content
    frameHeight = frameObj.contentWindow.document.body.scrollHeight;
    frameObj.height = frameHeight + 'px';
}
</script>