Image not showing in page footer.
You need to call the current theme URL and concatenate it with your alternative logo

&lt;div id="copyright"&gt;
    &lt;img src="&lt;?php print drupal_get_path('theme', 'THEME_NAME'); ?&gt;/images/logo.png"&gt;
     &lt;p class="copyright"&gt;&lt;?php print t('Copyright'); ?&gt; &amp;copy; &lt;?php echo date("Y"); ?&gt;&lt;/p&gt;
    &lt;div class="clear"&gt;&lt;/div&gt;
&lt;/div&gt;