diff --git a/view/theme/diabook/config.php b/view/theme/diabook/config.php
new file mode 100644
index 0000000000..f4eb7aae5a
--- /dev/null
+++ b/view/theme/diabook/config.php
@@ -0,0 +1,71 @@
+<?php
+/**
+ * Theme settings
+ */
+
+
+
+function theme_content(&$a){
+	if(!local_user())
+		return;		
+	
+	$font_size = get_pconfig(local_user(), 'diabook', 'font_size' );
+	$line_height = get_pconfig(local_user(), 'diabook', 'line_height' );
+	
+	return diabook_form($a,$font_size, $line_height);
+}
+
+function theme_post(&$a){
+	if(! local_user())
+		return;
+	
+	if (isset($_POST['diabook-settings-submit'])){
+		set_pconfig(local_user(), 'diabook', 'font_size', $_POST['diabook_font_size']);
+		set_pconfig(local_user(), 'diabook', 'line_height', $_POST['diabook_line_height']);
+	}
+}
+
+
+function theme_admin(&$a){
+	$font_size = get_config('diabook', 'font_size' );
+	$line_height = get_config('diabook', 'line_height' );
+	
+	return quattro_form($a,$font_size, $line_height);
+}
+
+function theme_admin_post(&$a){
+	if (isset($_POST['diabook-settings-submit'])){
+		set_config('diabook', 'font_size', $_POST['diabook_font_size']);
+		set_config('diabook', 'line_height', $_POST['diabook_line_height']);
+	}
+}
+
+
+function diabook_form(&$a, $font_size, $line_height){
+	$line_heights = array(
+		"1.4"=>"1.4",
+		"1.3"=>"1.3",
+		"1.2"=>"1.2",
+		"1.1"=>"1.1",
+	);
+	
+	$font_sizes = array(
+		'14'=>'14',
+		'13.5'=>'13.5',		
+		'13'=>'13',
+		'12.5'=>'12.5',
+		'12'=>'12',
+		);
+	
+	
+	
+	$t = file_get_contents( dirname(__file__). "/theme_settings.tpl" );
+	$o .= replace_macros($t, array(
+		'$submit' => t('Submit'),
+		'$baseurl' => $a->get_baseurl(),
+		'$title' => t("Theme settings"),
+		'$font_size' => array('diabook_font_size', t('Set font-size for posts and comments'), $font_size, '', $font_sizes),
+		'$line_height' => array('diabook_line_height', t('Set line-height for posts and comments'), $line_height, '', $line_heights),
+	));
+	return $o;
+}
diff --git a/view/theme/diabook/style-network.css b/view/theme/diabook/style-network.css
index e9fa9d8ba4..1e57041e4a 100644
--- a/view/theme/diabook/style-network.css
+++ b/view/theme/diabook/style-network.css
@@ -1318,10 +1318,10 @@ transition: all 0.2s ease-in-out;
 }
 
 .wall-item-container .wall-item-content {
-  font-size: 12.5px;
+
   max-width: 420px;
   word-wrap: break-word;
-  line-height: 1.2;
+
   margin-bottom: 14px;
 }
 
diff --git a/view/theme/diabook/style-profile.css b/view/theme/diabook/style-profile.css
index 31e1f056c6..ff39a0456e 100644
--- a/view/theme/diabook/style-profile.css
+++ b/view/theme/diabook/style-profile.css
@@ -1298,10 +1298,10 @@ transition: all 0.2s ease-in-out;
 }
 
 .wall-item-container .wall-item-content {
-  font-size: 12.5px;
+
   max-width: 420px;
   word-wrap: break-word;
-  line-height: 1.2;
+
   margin-bottom: 14px;
 }
 
diff --git a/view/theme/diabook/style.css b/view/theme/diabook/style.css
index 6edde2520d..e73bd1f577 100644
--- a/view/theme/diabook/style.css
+++ b/view/theme/diabook/style.css
@@ -1435,17 +1435,17 @@ body .pageheader{
 }
 
 .wall-item-container .wall-item-content {
-  font-size: 12.5px;
+
   max-width: 720px;
   word-wrap: break-word;
-  line-height: 1.2;
+
   margin-bottom: 14px;
 }
 .wall-item-photo-container .wall-item-content {
-  font-size: 12.5px;
+
   max-width: 720px;
   word-wrap: break-word;
-  line-height: 1.2;
+  
   margin-bottom: 14px;
 }
 .wall-item-container .wall-item-content img {
diff --git a/view/theme/diabook/style.php b/view/theme/diabook/style.php
new file mode 100644
index 0000000000..72e8899d40
--- /dev/null
+++ b/view/theme/diabook/style.php
@@ -0,0 +1,120 @@
+<?php
+	$line_height=false;
+	$diabook_font_size=false;
+	$site_line_height = get_config("diabook","line_height");
+	$site_diabook_font_size = get_config("diabook", "font_size" );
+	
+	if (local_user()) {
+		$line_height = get_pconfig(local_user(), "diabook","line_height");
+		$diabook_font_size = get_pconfig(local_user(), "diabook", "font_size");
+	}
+	
+	if ($line_height===false) $line_height=$site_line_height;
+	if ($line_height===false) $line_height="1.3";
+	if ($diabook_font_size===false) $diabook_font_size=$site_diabook_font_size;
+	if ($diabook_font_size===false) $diabook_font_size="13";
+	
+		
+	if (file_exists("$THEMEPATH/style.css")){
+		echo file_get_contents("$THEMEPATH/style.css");
+	}
+
+	if($diabook_font_size == "14"){
+		echo "
+			.wall-item-container .wall-item-content {
+  					font-size: 14px;
+  					}
+  					
+			.wall-item-photo-container .wall-item-content {
+  					font-size: 14px;
+  					}
+		";
+	}
+	if($diabook_font_size == "13.5"){
+		echo "
+			.wall-item-container .wall-item-content {
+  					font-size: 13.5px;
+  					}
+  					
+			.wall-item-photo-container .wall-item-content {
+  					font-size: 13.5px;
+  					}
+		";
+	}
+	if($diabook_font_size == "13"){
+		echo "
+			.wall-item-container .wall-item-content {
+  					font-size: 13px;
+  					}
+  					
+			.wall-item-photo-container .wall-item-content {
+  					font-size: 13px;
+  					}
+		";
+	}
+	if($diabook_font_size == "12.5"){
+		echo "
+			.wall-item-container .wall-item-content {
+  					font-size: 12.5px;
+  					}
+  					
+			.wall-item-photo-container .wall-item-content {
+  					font-size: 12.5px;
+  					}
+		";
+	}
+	if($diabook_font_size == "12"){
+		echo "
+			.wall-item-container .wall-item-content {
+  					font-size: 12px;
+  					}
+  					
+			.wall-item-photo-container .wall-item-content {
+  					font-size: 12px;
+  					}
+		";
+	}
+	if($line_height == "1.4"){
+		echo "
+			.wall-item-container .wall-item-content {
+  					line-height: 1.4;
+  					}
+  					
+			.wall-item-photo-container .wall-item-content {
+ 					line-height: 1.4;
+  					}
+		";
+	}
+	if($line_height == "1.3"){
+		echo "
+			.wall-item-container .wall-item-content {
+  					line-height: 1.3;
+  					}
+  					
+			.wall-item-photo-container .wall-item-content {
+ 					line-height: 1.3;
+  					}
+		";
+	}
+	if($line_height == "1.2"){
+		echo "
+			.wall-item-container .wall-item-content {
+  					line-height: 1.2;
+  					}
+  					
+			.wall-item-photo-container .wall-item-content {
+ 					line-height: 1.2;
+  					}
+		";
+	}
+	if($line_height == "1.1"){
+		echo "
+			.wall-item-container .wall-item-content {
+  					line-height: 1.1;
+  					}
+  					
+			.wall-item-photo-container .wall-item-content {
+ 					line-height: 1.1;
+  					}
+		";
+	}
diff --git a/view/theme/diabook/theme.php b/view/theme/diabook/theme.php
index a341d01c6c..b039e1b826 100755
--- a/view/theme/diabook/theme.php
+++ b/view/theme/diabook/theme.php
@@ -3,13 +3,13 @@
 /*
  * Name: Diabook
  * Description: Diabook: report bugs and request here: http://pad.toktan.org/p/diabook or contact me : thomas_bierey@friendica.eu
- * Version: (Version: 1.017)
+ * Version: (Version: 1.018)
  * Author: 
  */
 
 
 //print diabook-version for debugging
-$diabook_version = "Diabook (Version: 1.017)";
+$diabook_version = "Diabook (Version: 1.018)";
 $a->page['htmlhead'] .= sprintf('<script "%s" ></script>', $diabook_version);
 
 //change css on network and profilepages
diff --git a/view/theme/diabook/theme_settings.tpl b/view/theme/diabook/theme_settings.tpl
new file mode 100644
index 0000000000..564ecc2833
--- /dev/null
+++ b/view/theme/diabook/theme_settings.tpl
@@ -0,0 +1,8 @@
+{{inc field_select.tpl with $field=$font_size}}{{endinc}}
+
+{{inc field_select.tpl with $field=$line_height}}{{endinc}}
+
+<div class="settings-submit-wrapper">
+	<input type="submit" value="$submit" class="settings-submit" name="diabook-settings-submit" />
+</div>
+