add image to header besides title

this is the site

http://www.coinsorterandcounter.com/

i think this is the code

<div id="header">
	<div id="headerimg">
        <h1><a href="<?php echo get_option('home'); ?>/"><?php bloginfo('name'); ?></a></h1>
        <span class="description"><?php bloginfo('description'); ?></span>
        <div id="searchdiv"><?php include (TEMPLATEPATH . '/searchform.php'); ?></div>
	</div>

this is the theme

http://wordpress.org/extend/themes/simplex

for some reason, when i add the image tag

<img src="http://www.coinsorterandcounter.com/wp-content/uploads/Fast-Sort-Automatic-Digital-Coin-Sorter.jpg" title="Home" alt="testing" />

it displays on the bottom of the title instead of on the search box space

i want to replace the search box, with a logo of my site.

thanks, how to make it show besides instead of below the title?