make sure you set the correct image name
Code:
<table width="100%" border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="26">[img]{$ImagesDir}/menu_content_bg.gif[/img]</td>
<td background="{$ImagesDir}/menu_bg_orange.gif"><font
class=VertMenuBoxNewsTitle>{$menu_title}</font></td>
</tr>
</table><table width="100%" border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="1" class="VertMenuBorder">[img]{$ImagesDir}/menu_bg_orange.gif[/img]</td>
<td class="VertMenuBox">
<TABLE border=0 cellPadding=5 cellSpacing=0 width="100%">
<TR>
<TD width="80%" class=VertMenuBox nowrap>{$menu_content} </TD>
</TR>
</TABLE>
</td>
<td width="1" class="VertMenuBorder">[img]{$ImagesDir}/menu_bg_orange.gif[/img]</td>
</tr>
<tr>
<td width="1" height="1" class="VertMenuBorder">[img]{$ImagesDir}/spacer.gif[/img]</td>
<td height="1" class="VertMenuBorder">[img]{$ImagesDir}/spacer.gif[/img]</td>
<td width="1" height="1" class="VertMenuBorder">[img]{$ImagesDir}/spacer.gif[/img]</td>
</tr>
</table>