diff --git a/thirdparty/Smarty/plugins/modifier.sanitize_input.php b/thirdparty/Smarty/plugins/modifier.sanitize_input.php
new file mode 100644
index 0000000..5623e84
--- /dev/null
+++ b/thirdparty/Smarty/plugins/modifier.sanitize_input.php
@@ -0,0 +1,13 @@
+<?php
+
+function smarty_modifier_sanitize_input($string, $esc_type = 'html', $charset='UTF-8')
+{
+    $string = mb_ereg_replace("'","&#039;", $string);
+    $string = mb_ereg_replace('"',"&quot;", $string);
+    $string = mb_ereg_replace('<',"&lt;", $string);
+    $string = mb_ereg_replace('>',"&gt;", $string);
+    return $string;
+}
+
+
+?>