Adding advertising banner to the head section of my site

[jason1971]

HI there,
Looking for a bit of assistance is poss. I have pasted below the head section of my Layout file, could somebody please tell me exactly where I need to place my banner script please, and whether I need to add that {literal} to it. I would like it to the right of my logo see my site here
Many thanks
Jason

<div id="header">
<p id="top_info">
{if $smarty.session.username<>'' || $smarty.cookies.username<>""}
{$smarty.const.LANG_USER_WELCOME} {$smarty.session.username}
{if $pmon=="Y"}
<br />
<a href="{$smarty.const.URLS}/private.php">{$smarty.const.LANG_PRIVATE_MESSAGES} :</a> <br>{$smarty.const.LANG_UNREAD} {$unreadpms}, {$smarty.const.LANG_TOTAL} {$totalpms}.
{/if}
{else}
{$smarty.const.LANG_WELCOME_GUEST} <br />[<a href="{$smarty.const.URLS}/login.php">{$smarty.const.LANG_USER_LOGIN}</a>, <a href="{$smarty.const.URLS}/userjoin.php">{$smarty.const.LANG_USER_REGISTER}</a>]
{/if}
</p>

<div id="logo">
{* This portion is the site title. The top left corner. *}
<img src="/uploads/classifiedslogo.JPG"</a>



</div>
</div><br><br>

[Eric Barnes]

First off your logo code is wrong. It should be:
<img src="/uploads/classifiedslogo.JPG" />

Then you would just add the banner code beside that and place it inside {literal} {/literal} tags.