Add default banner

templates/html.tpl.php

@@ -79,7 +79,11 @@
 
     	<style type="text/css" id="twentythirteen-header-css">
     			.site-header {
+            <?php if (file_exists('/var/www/html/banner.png')): ?>
                         background: url(<?php echo $GLOBALS['base_url'];?>/banner.png) no-repeat scroll top;
+            <?php else: ?>
+                        background: url(<?php echo $GLOBALS['base_url'].'/'.drupal_get_path('theme', 'abims');?>/images/abims/banner.png) no-repeat scroll top;
+            <?php endif; ?>
     			background-size: 1600px auto;
     		}
     		@media (max-width: 767px) {