diff --git a/assets/css/Header-Dark.css b/assets/css/Header-Dark.css
index f002796..60fd9bc 100644
--- a/assets/css/Header-Dark.css
+++ b/assets/css/Header-Dark.css
@@ -1,6 +1,6 @@
 
 body {
-  background: url(../../assets/img/mountain_bg.jpg) blue;
+  background: url(../../assets/img/mountain_bg.jpg) grey;
   height:100%;
   padding-bottom: 80px;
   background-repeat:no-repeat;
diff --git a/functions.php b/functions.php
index 2c22970..54910e3 100644
--- a/functions.php
+++ b/functions.php
@@ -3,7 +3,7 @@ require 'settings.php';
 class Funcs
 {
 
-    public static function InsertDatas($conn, $ds, $de, $n,$tisch,$tnum)
+    public static function InsertDatas($conn, $ds, $de, $n, $tisch, $tnum)
     {
         $day = $_SESSION["day"];
         $month = $_SESSION["month"];
@@ -12,28 +12,69 @@ class Funcs
         $dayend = $de;
         $name = $n;
 
-        
+        $besetzt = array();
         $table = $tisch;
 
         for ($daystart; $daystart <= $dayend; $daystart++) {
 
-            $sql = "INSERT INTO calenderplanner (year, month, day,reserviert,reserviertvon,tisch)
-    VALUES ('$year', '$month', '$daystart', '1', '$name', '$table')";
+            $sql = "SELECT * FROM calenderplanner WHERE month='$month' AND day='$daystart'AND year='$year'  AND tisch='$table'";
+            $result = $conn->query($sql);
+
+        if ($result->num_rows > 0) {
+            
+            while ($row = $result->fetch_assoc()) {
+                $besetzt[$row['day']] = $row['reserviertvon'];
+                //array_push($besetzt[$row['day'] = $row['reserviertvon']]);
+            }
+            }
+            else{
+                $sql = "INSERT INTO calenderplanner (year, month, day,reserviert,reserviertvon,tisch)
+            VALUES ('$year', '$month', '$daystart', '1', '$name', '$table')";
             $conn->query($sql);
+            }
+
+            
         }
         $sql = "SELECT * FROM calenderplanner WHERE month='$month' AND day='$day'AND year='$year'  AND tisch='$table'";
         $result = $conn->query($sql);
 
         if ($result->num_rows > 0) {
-            // output data of each row
             while ($row = $result->fetch_assoc()) {
-                //echo $row['uniqueid'].$row['year'].$row['month'].$row['day'].$row['reserviert'].$row['reserviertvon'].$row['tisch']."<br>" ;
                 $_SESSION[$tnum] = array($row['uniqueid'], $row['month'], $row['day'], $row['reserviert'], $row['reserviertvon'], $row['tisch'], $row['year']);
-                //echo $_SESSION["Tisch3"][6];
             }
-            $_SESSION["sucessmessage"] = '<div class="alert alert-success">
-Du hast den Tisch erfolgreich reserviert.</div>';
-            header("location:index.php?result=gotrecords");
         }
-    }
+
+            if(empty($besetzt)) {
+                
+                $_SESSION["sucessmessage"] = '<div class="alert alert-success">
+                Du hast den/die Tisch/e erfolgreich reserviert.</div>';
+                
+                header("location:index.php?result=gotrecords");
+            }
+            else
+            {
+                $_SESSION["sucessmessage"] = '<div class="alert alert-danger">
+                
+                Folgende Tische sind schon belegt von: <br>
+                ';
+                
+                foreach ($besetzt as $key => $value)
+                {
+                    
+                    $_SESSION["sucessmessage"].= "Tag ".$key." belegt von: ".$value." <br>";
+                }
+                
+                $_SESSION["sucessmessage"].='</div><br>';
+                $_SESSION["sucessmessage"].='<div class="alert alert-success">
+                
+                Die freien Tische wurden belegt! <br>
+                </div><br>';
+                
+                header("location:index.php?result=gotrecords");
+            }
+            
+        
+
+        }
+    
 }
diff --git a/required/header.php b/required/header.php
index 6f61b56..df1a216 100644
--- a/required/header.php
+++ b/required/header.php
@@ -14,6 +14,9 @@
 
             $("#refresh").click();
         }
+        $(function () {
+            $('[data-toggle="popover"]').popover()
+            })
 
 
 </script>