diff --git a/html/bt/filters/allfilesfilefilter.php b/html/bt/filters/allfilesfilefilter.php
new file mode 100644
index 0000000000..c9d46f5b30
--- /dev/null
+++ b/html/bt/filters/allfilesfilefilter.php
@@ -0,0 +1,16 @@
+<?php
+
+/**
+ * A file filter that simply accepts any file whatsoever
+ */
+
+$cvs_version_tracker[]="\$Id: checks.php 12885 2007-06-11 18:27:24Z jbk $";  //Generated automatically - do not edit
+
+ 
+class AllFilesFileFilter extends FileFilter {
+    function isValid($file){
+	return true;
+    }
+}
+
+?>
\ No newline at end of file
diff --git a/html/bt/filters/filefilter.php b/html/bt/filters/filefilter.php
new file mode 100644
index 0000000000..4cde924a51
--- /dev/null
+++ b/html/bt/filters/filefilter.php
@@ -0,0 +1,13 @@
+<?php
+/**
+ * Any file filter must implement the following interface
+ */
+
+$cvs_version_tracker[]="\$Id: checks.php 12885 2007-06-11 18:27:24Z jbk $";  //Generated automatically - do not edit
+
+
+abstract class FileFilter {
+    abstract function isValid($file);    
+}
+
+?>
\ No newline at end of file