Just remove it from the table.
<BODY style="overflow:hidden; height:100%;">
<object data="http://www.misgeret.co.il/Ebay/Famus/SideMenuFamus.html" type="text/html" style="float:left;width:230px;height:100%"></object>
</BODY>
http://jsfiddle.net/ma9ic/QtKMa/5/
100% height in a table cell is always a pain. Technically speaking a TD has no height (because that depends on its contents). What you are asking the browser to do is make the child 100% of its parent, which is 100% of its child, which is 100% of its parent ... You can see how that might be a problem.
You could try adding an explicit height to the TD and using table-layout:fixed on the table. At least that way the browser knows the height of the parent without needing the height of the child but that still may not work.
You might need to rethink how you go about this.
This shows you the result using a set height and using iframes
<BODY style="overflow:hidden;height:100%;">
<TABLE align=left width=234 border="1" cellpadding="0" cellspacing="0">
<TR>
<TD valign=top align=center WIDTH="234" height="1000">
<iframe src="http://www.misgeret.co.il/Ebay/Famus/SideMenuFamus.html" style="border:0px #FFFFFF none;" name="myiFrame" scrolling="no" frameborder="0" marginheight="0px" marginwidth="0px" height="100%" width="100%"></iframe>
</TD>
</TR>
</TABLE>
</BODY>
http://jsfiddle.net/ma9ic/QtKMa/6/
Hope this helps