You can customize it on this file
Copy <blockquote>pluginssystemjat3jat3base-themesdefaultblocksheader.php file</blockquote>
Paste to directory <blockquote>templatesja_universityblocks</blockquote>
Open header.php file on templates and change <H1> tag
<h1 class="logo">
<a href="<?php JURI::base(true) ?>" title="<?php echo $siteName; ?>"><span><?php echo $siteName; ?></span></a>
</h1>
and change css file
<blockquote>open templates/ja_university/css/template.css file</blockquote>
change it
h1.logo, div.logo-text h1 {
font-size: 250%;
line-height: 1;
margin-left: 10px;
}
/* Logo Image ---*/
h1.logo {
width: 220px;
height: 56px;
}
h1.logo a {
background: url(../images/logo.png) no-repeat left;
display: block;
width: 220px;
height: 56px;
}