diff --git a/skin/style.css.php b/skin/style.css.php
index 1030a02c5..ca71eb57f 100644
--- a/skin/style.css.php
+++ b/skin/style.css.php
@@ -1,24 +1,49 @@
-<?php
-	header("Cache-Control: no-cache");
-	header("Cache-Control: post-check=0, pre-check=0",false);
-	header("Expires Mon, 26 Jul 1997 05:00:00 GMT");
-	header("Pragma: no-cache");
-	if (isset($_GET['path']))
-		$path=$_GET['path'];
-	else
-		$path='../';
-	require ($path.'cis/config.inc.php');
-	//setcookie('stylesheet', DEFAULT_STYLE);
-	//Name des Stylesheets darf nur buchstaben von A-Z enthalten (ohne umlaute)
-	if (isset($_COOKIE['stylesheet']) && preg_match('/^[a-zA-Z]+$/', $_COOKIE['stylesheet']))
-	{
-		$stylesheet=$_COOKIE['stylesheet'];
-	}
-	else
-		$stylesheet=DEFAULT_STYLE;
-	//setcookie('stylesheet', DEFAULT_STYLE);
-	header("Content-Type: text/css");
-	//echo $_COOKIE['stylesheet'];
-	readfile ($path.'skin/styles/'.$stylesheet.'.css');
-?>
-
+<?php
+	header("Cache-Control: no-cache");
+	header("Cache-Control: post-check=0, pre-check=0",false);
+	header("Expires Mon, 26 Jul 1997 05:00:00 GMT");
+	header("Pragma: no-cache");
+	if (isset($_GET['path']))
+		$path=$_GET['path'];
+	else
+		$path='../';
+	require ($path.'cis/config.inc.php');
+	//setcookie('stylesheet', DEFAULT_STYLE);
+	//Name des Stylesheets darf nur buchstaben von A-Z enthalten (ohne umlaute)
+	if (isset($_COOKIE['stylesheet']) && preg_match('/^[a-zA-Z]+$/', $_COOKIE['stylesheet']))
+	{
+		$stylesheet=$_COOKIE['stylesheet'];
+	}
+	else
+	{
+		if (jahresplan_check_mobile())
+			$stylesheet="mobile";
+		else
+			$stylesheet=DEFAULT_STYLE;
+	}	
+	//setcookie('stylesheet', DEFAULT_STYLE);
+	header("Content-Type: text/css");
+	//echo $_COOKIE['stylesheet'];
+	readfile ($path.'skin/styles/'.$stylesheet.'.css');
+#--------------------------------------------------------------------------------------------------
+#	$const=@get_defined_constants();
+#	@reset($const);	
+#	print_r($const);   
+function jahresplan_check_mobile() {
+  $agents = array(
+    'Windows CE', 'Pocket', 'Mobile',
+    'Portable', 'Smartphone', 'SDA',
+    'PDA', 'Handheld', 'Symbian',
+    'WAP', 'Palm', 'Avantgo',
+    'cHTML', 'BlackBerry', 'Opera Mini',
+    'Nokia'
+  );
+  // Prüfen der Browserkennung
+  for ($i=0; $i<count($agents); $i++) {
+    if(isset($_SERVER["HTTP_USER_AGENT"]) && strpos($_SERVER["HTTP_USER_AGENT"], $agents[$i]) !== false)
+      return true;
+  }
+  return false;
+}
+?>
+