diff -rupN sharethis/sharethis.module sharethis_new/sharethis.module
--- sharethis/sharethis.module	2011-09-28 17:04:10.000000000 -0600
+++ sharethis_new/sharethis.module	2011-11-09 10:59:07.000000000 -0600
@@ -318,7 +318,7 @@ function sharethis_node_view($node, $vie
       // You can change the weight to change whether the buttons are near the top or bottom of the node.
       // Default is at the bottom:
       $node->content['my_additional_field'] = array(
-        '#markup' => get_button_HTML($data_options, $mPath, $mTitle), 
+        '#markup' => theme('sharethis_get_button_HTML',array($data_options, $mPath, $mTitle)),
         '#weight' => 10
       );
     }
@@ -344,7 +344,25 @@ function get_options_array() {
   * get_button_HTML is the function that creates the ShareThis code
   * It returns the appropriate html based on your settings.
   */
-function get_button_HTML($data_options, $mPath, $mTitle) {
+function sharethis_theme($existing, $type, $theme, $path) {
+    if($type=='module'){
+        return array(
+            'sharethis_get_button_HTML' => array(
+                'variables' => array(
+                    'data_options' => NULL,
+                     'mPath' => NULL,
+                     'mTitle' => NULL,
+                    ),
+            ),
+        );
+    }
+
+    theme_item_list($variables);
+}
+
+function theme_sharethis_get_button_HTML($variables) {
+   list($data_options,$mPath,$mTitle) = $variables;
+
   // The share buttons are simply spans of the form class='st_SERVICE_BUTTONTYPE' -- "st" stands for ShareThis.
   $type = substr($data_options['buttons'], 4);
   $type = $type == "_" ? "" : $type;
diff -rupN sharethis/sharethis_block/sharethis_block.module sharethis_new/sharethis_block/sharethis_block.module
--- sharethis/sharethis_block/sharethis_block.module	2011-09-28 17:04:10.000000000 -0600
+++ sharethis_new/sharethis_block/sharethis_block.module	2011-11-09 11:00:15.000000000 -0600
@@ -28,5 +28,5 @@ function sharethis_block_contents() {
   $path = isset($_GET['q']) ? $_GET['q'] : '<front>';
   $mPath = url($_GET['q'], array('absolute' => TRUE));
   $mTitle = drupal_get_title();
-  return get_button_HTML($data_options, $mPath, $mTitle);
+  return theme('sharethis_get_button_HTML',array($data_options, $mPath, $mTitle));
 }
\ No newline at end of file