added old frameborder Attribute for IE7 and IE8
@ -113,7 +113,7 @@
<div id="mailview-bottom" class="uibox">
<div id="mailpreviewframe">
<roundcube:object name="messagecontentframe" id="messagecontframe" style="width:100%; height:100%; border:none;" src="/watermark.html" />
<roundcube:object name="messagecontentframe" id="messagecontframe" style="width:100%; height:100%" frameborder="0" src="/watermark.html" />
</div>
<roundcube:object name="message" id="message" class="statusbar" />