?>
<div class="htmlIframe">
<?php echo _("Viewing HTML formatted email"); ?>
-<iframe name="message_frame" src="<?php echo $iframe_url; ?>" frameborder="1" marginwidth="0" marginheight="0" scrolling="auto">
+<iframe name="message_frame" src="<?php echo $iframe_url; ?>" frameborder="1" marginwidth="0" marginheight="0" scrolling="auto" height="<?php echo $iframe_height; ?>">
<?php echo $html_body; ?>
</iframe>
</div>
\ No newline at end of file