diff --git a/Classes/Service/GridData/FileDataProcessingService.php b/Classes/Service/GridData/FileDataProcessingService.php
index 5c69f30..e365da1 100644
--- a/Classes/Service/GridData/FileDataProcessingService.php
+++ b/Classes/Service/GridData/FileDataProcessingService.php
@@ -117,7 +117,9 @@ public function buildColumnConfiguration() {
 			array('text' => 'Grösse', 'dataIndex' => 'size', 'xtype' => 'byteColumn'),
 			array('text' => 'Extension', 'dataIndex' => 'extension'),
 			array('text' => 'Mimetype', 'dataIndex' => 'type'),
-			array('text' => 'Erstellt am', 'dataIndex' => 'creationDate', 'xtype' => 'datecolumn', 'format' => 'd.m.Y H:i')
+			array('text' => 'Erstellt am', 'dataIndex' => 'creationDate', 'xtype' => 'datecolumn', 'format' => 'd.m.Y H:i'),
+			array('text' => 'Änderungsdatum', 'dataIndex' => 'creationDate', 'xtype' => 'datecolumn', 'format' => 'd.m.Y H:i'),
+			array('text' => 'Thumbnail', 'dataIndex' => 'url', 'xtype' => 'thumbnailColumn')
 		);
 		return $columns;
 	}
@@ -130,7 +132,11 @@ public function buildFieldConfiguration() {
 			array('name' => 'size', 'type' => 'int'),
 			array('name' => 'extension', 'type' => 'string'),
 			array('name' => 'type', 'type' => 'string'),
-			array('name' => 'creationDate', 'type' => 'date', 'dateFormat' => 'timestamp')
+			array('name' => 'creationDate', 'type' => 'date', 'dateFormat' => 'timestamp'),
+			array('name' => 'mtime', 'type' => 'date', 'dateFormat' => 'timestamp'),
+			array('name' => 'permissions', 'type' => 'auto'),
+			array('name' => 'indexed', 'type' => 'boolean'),
+			array('name' => 'url', 'type' => 'string')
 		);
 		return $fields;
 	}
diff --git a/Resources/Public/JavaScript/Actions/File.js b/Resources/Public/JavaScript/Actions/File.js
index f23395d..6708b53 100644
--- a/Resources/Public/JavaScript/Actions/File.js
+++ b/Resources/Public/JavaScript/Actions/File.js
@@ -45,14 +45,14 @@ TYPO3.Vidi.Actions.File = {
 	editTextFile: function(record) {
 		Ext.create(
 			'TYPO3.Vidi.Components.Overlay',
-			'file_edit.php?' + Ext.Object.toQueryString({target: record.get('id')}, true),
+			'file_edit.php?' + Ext.Object.toQueryString({target: record.get('id'), type: '_FILE'}, true),
 			'editContentRecord',
 			function() {}
 		);
 	},
 	showFileInfo: function(record) {
 		if (top.launchView !== undefined) {
-			top.launchView(record.get('id'), '');
+			top.launchView(record.get('id'), '_FILE');
 		}
 	},
 	createEmptyFile: function() {
diff --git a/Resources/Public/JavaScript/Components/Grid/Columns/FileActionColumn.js b/Resources/Public/JavaScript/Components/Grid/Columns/FileActionColumn.js
index b8c7d32..4db1d97 100644
--- a/Resources/Public/JavaScript/Components/Grid/Columns/FileActionColumn.js
+++ b/Resources/Public/JavaScript/Components/Grid/Columns/FileActionColumn.js
@@ -2,6 +2,8 @@
 Ext.define('TYPO3.Vidi.Components.Grid.Columns.FileActionColumn', {
 	extend: 'Ext.grid.column.Action',
 	alias: ['widget.fileActionColumn'],
+	sortable: false,
+	hidable : false,
 	iconConfig : [
 		{
 			iconCls: 't3-icon t3-icon-actions t3-icon-actions-document t3-icon-document-open',
@@ -11,7 +13,7 @@ Ext.define('TYPO3.Vidi.Components.Grid.Columns.FileActionColumn', {
 				TYPO3.Vidi.Actions.File.editTextFile(rec)
 			},
 			active: function(record) {
-				if (record.get('type').substring(0, 5) == 'text/') {
+				if (record.get('type').substring(0, 5) == 'text/' &&  record.data.permissions.write == true) {
 					return true;
 				} else {
 					return false;
@@ -26,7 +28,7 @@ Ext.define('TYPO3.Vidi.Components.Grid.Columns.FileActionColumn', {
 				TYPO3.Vidi.Actions.File.deleteFile(rec);
 			},
 			active: function(record) {
-				return true;
+				return record.data.permissions.delete === true;
 			}
 		},
 		{
@@ -37,7 +39,7 @@ Ext.define('TYPO3.Vidi.Components.Grid.Columns.FileActionColumn', {
 				TYPO3.Vidi.Actions.File.renameFile(rec);
 			},
 			active: function(record) {
-				return true;
+				return record.data.permissions.write === true;
 			}
 
 		},
diff --git a/Resources/Public/JavaScript/Components/Grid/Columns/ThumbnailColumn.js b/Resources/Public/JavaScript/Components/Grid/Columns/ThumbnailColumn.js
index 020621d..fb8022f 100644
--- a/Resources/Public/JavaScript/Components/Grid/Columns/ThumbnailColumn.js
+++ b/Resources/Public/JavaScript/Components/Grid/Columns/ThumbnailColumn.js
@@ -3,19 +3,26 @@ Ext.define('TYPO3.Vidi.Components.Grid.Columns.ThumbnailColumn', {
 	extend: 'Ext.grid.column.Column',
 	alias: ['widget.thumbnailColumn'],
 	align: 'center',
+	minWidth: 70,
 	constructor: function(cfg) {
 		this.callParent(arguments);
 	},
-	renderer: function(value) {
-		if (Ext.isArray(value)) {
-			var content = '';
-			Ext.Array.each(value, function(item) {
-				content += '<img src="' + item + '" style="width:' + TYPO3.Vidi.Components.Grid.Columns.ThumbnailColumn.thumbnailWidth + 'px;height:auto;" alt="thumb" />';
-			});
-			return content;
-		} else {
+	renderer: function(value, container, record, row, column) {
+		if (record.data.type !== undefined && record.data.type.substring(0,6) != 'image/' || value == '') {
 			return '';
 		}
+		if (this.columns[column].isVisible() == false) {
+			return '';
+		}
+		if (!Ext.isArray(value)) {
+			value = [value];
+		}
+		var content = '';
+		Ext.Array.each(value, function(item) {
+			content += '<img src="/' + item + '" style="width:' + TYPO3.Vidi.Components.Grid.Columns.ThumbnailColumn.thumbnailWidth + 'px;height:auto;" alt="thumb" />';
+		});
+		container.style = { padding: 0};
+		return content;
 	},
 	statics: {
 		thumbnailWidth: 50
diff --git a/Resources/Public/JavaScript/Components/Grid/ThumbnailResizer.js b/Resources/Public/JavaScript/Components/Grid/ThumbnailResizer.js
index f0b2773..0a653f7 100644
--- a/Resources/Public/JavaScript/Components/Grid/ThumbnailResizer.js
+++ b/Resources/Public/JavaScript/Components/Grid/ThumbnailResizer.js
@@ -14,6 +14,11 @@ Ext.define('TYPO3.Vidi.Components.Grid.ThumbnailResizer', {
 			listeners: {
 				change: function(slider, newValue) {
 					TYPO3.Vidi.Components.Grid.Columns.ThumbnailColumn.thumbnailWidth = newValue;
+					Ext.each(this.up('gridpanel').columns, function(column) {
+						if (column.alias[0] == 'widget.thumbnailColumn') {
+							column.setWidth(newValue + 20);
+						}
+					});
 					this.up('gridpanel').down('gridview').refresh();
 				}
 			}