diff --git a/README.md b/README.md
index c82f45f..ccca141 100755
--- a/README.md
+++ b/README.md
@@ -5,5 +5,10 @@ This Module provides a timetable block for moodle based on untis export-files: l
 
 ## Screenshot:
 
+Students view:
+
 ![image](doc/timetable_screenshot1.png)
 
+Teachers view:
+
+![image](doc/timetable_screenshot2.png)
diff --git a/block_timetable.php b/block_timetable.php
index 9424e52..144da43 100755
--- a/block_timetable.php
+++ b/block_timetable.php
@@ -73,7 +73,7 @@ class block_timetable extends block_base {
 		$class = $this->page->course->shortname;
             	$this->content->text .= "Stundenplan der Klasse $class<br>";
 		$ttable = new timetable('class',$class);
-	} elseif ($USER->department == "Lehrer") {
+	} elseif ($USER->department == "Lehrer" || $USER->department == "Lehrer_fvs") {
 		$teacher = $USER->username;
 		$teacher = str_replace("l_", "", $teacher);
 		$teacher = str_replace("-fvs", "", $teacher);
diff --git a/classes/timetable.php b/classes/timetable.php
index c46ffc9..48e3eda 100755
--- a/classes/timetable.php
+++ b/classes/timetable.php
@@ -87,14 +87,8 @@ class timetable {
 		}
 	}
 	$day = new \DateTime($this->monday->format('Y-m-d\TH:i:sP'));
-	// TODO CHANGE DATABASE: table substitution: classesa -> classa, classesb -> classb !!!
 	for ($i=0; $i<$this->numdayweek; $i++) {
-		if ($this->type == 'class') {
-			$sql = "date = '".$day->format('Ymd')."' AND ({$this->type}esa LIKE '%{$this->name}%' OR {$this->type}esb LIKE '%{$this->name}%')";
-		} else {
-			$sql = "date = '".$day->format('Ymd')."' AND ({$this->type}a LIKE '%{$this->name}%' OR {$this->type}b LIKE '%{$this->name}%')";
-
-		}
+		$sql = "date = '".$day->format('Ymd')."' AND ({$this->type}a LIKE '%{$this->name}%' OR {$this->type}b LIKE '%{$this->name}%')";
 
 		if ($result = $DB->get_records_select('timetable_substitution',$sql)) {
 			foreach ($result as $substitution) {
diff --git a/doc/.gitkeep b/doc/.gitkeep
old mode 100644
new mode 100755
diff --git a/doc/timetable_screenshot1.png b/doc/timetable_screenshot1.png
old mode 100644
new mode 100755
index 291f6b7..a859cd8
Binary files a/doc/timetable_screenshot1.png and b/doc/timetable_screenshot1.png differ
diff --git a/doc/timetable_screenshot2.png b/doc/timetable_screenshot2.png
new file mode 100755
index 0000000..3610f4e
Binary files /dev/null and b/doc/timetable_screenshot2.png differ
diff --git a/module.js b/module.js
old mode 100644
new mode 100755
diff --git a/styles.css b/styles.css
old mode 100644
new mode 100755