Update selectsource.tpl.php

mymodule/templates/selectsource.tpl.php

@@ -19,7 +19,7 @@ foreach ($this->data['sources'] as $source) {
         $autofocus = '';
     }
     $name = 'src-'.base64_encode($source['source']);
-    echo '<input type="submit" name="'.htmlspecialchars($name).'"'.$autofocus.' '.
+    echo '<input type="submit" class="'.htmlspecialchars($source['css_class']).'"  name="'.htmlspecialchars($name).'"'.$autofocus.' '.
         'id="button-'.htmlspecialchars($source['source']).'" '.
         'value="'.htmlspecialchars($source['text']).'" />';
     echo '</li>';