diff --git a/index.html b/index.html
index d6b8fb9..3c551c7 100644
--- a/index.html
+++ b/index.html
@@ -2,311 +2,308 @@
 <html>
 
 <head>
-	<meta charset="utf-8" />
-	<meta name="viewport"
-		content="width=device-width, user-scalable=no, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0" />
-	<link href="styles/styles.css" rel="stylesheet">
-	
-	<title>R4G</title>
-	
-	<!-- scripts for blockly code -->
-	<script src="blockly/blockly_compressed.js"></script>
-	<script src="blockly/blocks_compressed.js"></script>
-	<script src="blockly/js/de.js"></script>
-	<script src="blockly/javascript_compressed.js"></script>
+    <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0" />
+    <link href="styles/styles.css" rel="stylesheet">
+
+    <title>R4G</title>
+
+    <!-- scripts for blockly code -->
+    <script src="blockly/blockly_compressed.js"></script>
+    <script src="blockly/blocks_compressed.js"></script>
+    <script src="blockly/js/de.js"></script>
+    <script src="blockly/javascript_compressed.js"></script>
 </head>
 
 <!-- body -->
+
 <body ontouchstart="" id="body">
-	<!-- ontouchstart="" enables low-delay CSS transitions. -->
-	
-	<table>
-		<tr>
-		<!-- Title, Logo and Program commands -->
-			<img src="media/logo/R4G_Logo_rose_gradient.png" class="logo" style="float:left;margin-top: 20px; margin-left: 5px; height:70px;width:140px;">
-			<!-- Bluetooth communication -->
-			<div class="bluetooth" style="margin-top: 40px;">
-				<button id="connect" type="button" class="button blue">Verbinden</button>
-			</div>
-			<div class="dropdown" style="float:right;margin-top: 40px;">
-				<button onclick="showMenu()" class="dropbtn button black" style="margin-right:15px;">Menu</button>
-				<div id="myDropdown" class= "dropdown-content">
-					<button id ="saveData" class="tablinks gray" onclick="save()">Programm speichern</button>
-					<button id ="restoreData" class="tablinks gray" onclick="restore()">Programm laden</button>
-					<button class="tablinks gray" onclick="deleteItem()">Programm löschen</button>
-					<button class="tablinks gray" onclick="deleteAll()">Speicher freigeben</button>
-					<button id="disconnect" class="tablinks gray">Trennen</button>
-					<button id ="endProgram" class="tablinks gray" onclick=" end_program()">Beenden</button>
-				</div>
-			</div>
-		</tr>		
-		<tr>
-			<td>
-				<!-- play/stop button starts/stops blockly code execution -->
-				<div class="control_buttons" style="margin-top: 10px;">
-					<button id="start" onclick="handlePlay();" type="button" class= "button green" style="float:left; margin-left:10px;font-size: 13px;padding-left:30px;padding-right: 30px;">Start</button>
-					<button id="stop" type="button" class="button rosy" style="float:left; margin-left:20px;font-size: 13px;">Stopp</button>
-				</div>
-			</td>
-		</tr>
-		<tr>
-		<!-- Area for blockly workspace -->
-      		<td id="blocklyArea"></td>
-		</tr>
-	</table>
+    <!-- ontouchstart="" enables low-delay CSS transitions. -->
+
+    <table>
+        <tr>
+            <!-- Title, Logo and Program commands -->
+            <img src="media/logo/R4G_Logo_rose_gradient.png" class="logo" style="float:left;margin-top: 20px; margin-left: 5px; height:70px;width:140px;">
+            <!-- Bluetooth communication -->
+            <div class="bluetooth" style="margin-top: 40px;">
+                <button id="connect" type="button" class="button blue">Verbinden</button>
+            </div>
+            <div class="dropdown" style="float:right;margin-top: 40px;">
+                <button onclick="showMenu()" class="dropbtn button black" style="margin-right:15px;">Menu</button>
+                <div id="myDropdown" class="dropdown-content">
+                    <button id="saveData" class="tablinks gray" onclick="save()">Programm speichern</button>
+                    <button id="restoreData" class="tablinks gray" onclick="restore()">Programm laden</button>
+                    <button class="tablinks gray" onclick="deleteItem()">Programm löschen</button>
+                    <button class="tablinks gray" onclick="deleteAll()">Speicher freigeben</button>
+                    <button id="disconnect" class="tablinks gray">Trennen</button>
+                    <button id="endProgram" class="tablinks gray" onclick=" end_program()">Beenden</button>
+                </div>
+            </div>
+        </tr>
+        <tr>
+            <td>
+                <!-- play/stop button starts/stops blockly code execution -->
+                <div class="control_buttons" style="margin-top: 10px;">
+                    <button id="start" onclick="handlePlay();" type="button" class="button green" style="float:left; margin-left:10px;font-size: 13px;padding-left:30px;padding-right: 30px;">Start</button>
+                    <button id="stop" type="button" class="button rosy" style="float:left; margin-left:20px;font-size: 13px;">Stopp</button>
+                </div>
+            </td>
+        </tr>
+        <tr>
+            <!-- Area for blockly workspace -->
+            <td id="blocklyArea"></td>
+        </tr>
+    </table>
+
+    <!-- script for bluetooth communication -->
+    <script type="text/javascript" src="scripts/ble3.js"></script>
+
+    <script>
+        /* toggle between hiding and showing the dropdown content */
+        function showMenu() {
+            document.getElementById("myDropdown").classList.toggle("show");
+        }
+        // Close the dropdown menu if the user clicks outside of it
+        window.onclick = function(event) {
+            if (!event.target.matches('.dropbtn')) {
+                var dropdowns = document.getElementsByClassName("dropdown-content");
+                var i;
+                for (i = 0; i < dropdowns.length; i++) {
+                    var openDropdown = dropdowns[i];
+                    if (openDropdown.classList.contains('show')) {
+                        openDropdown.classList.remove('show');
+                    }
+                }
+            }
+        }
+
+        /* on Start button clicked */
+        function handlePlay(event) {
+            let delimiter_microbit = ":";
+            Blockly.JavaScript.addReservedWords('code');
+            var code = "Gb16" + delimiter_microbit + Blockly.JavaScript.workspaceToCode(Blockly.getMainWorkspace());
+            var commands = code.split(delimiter_microbit);
+            var max_length = 19;
+            for (var i = 0; i < commands.length; i++) {
+                if (commands[i].length > max_length) {
+                    commands[i] = commands[i].substring(0, max_length);
+                }
+                commands[i] += delimiter_microbit;
+                console.log(commands[i]);
+            }
+            return sendData(commands);
+        }
+
+        /* Menu functions */
+        function save() {
+            console.log(localStorage);
+            var eingabe = "";
+            var double = false;
+            eingabe = prompt('Speichern unter:', '');
+            if (eingabe === "") {
+                while (eingabe === "") {
+                    eingabe = prompt('Bitte Programm benennen:', '');
+                }
+            }
+            for (let i = 0; i < localStorage.length; i++) {
+                if (localStorage.key(i).includes("R4G_" + eingabe)) {
+                    double = true;
+                }
+            }
+            if (double) {
+                if (!confirm("Programm ist bereits vorhanden\nSoll es überschrieben werden?")) {
+                    return 1;
+                }
+            }
+            if (eingabe != null) {
+                var xmlDom = Blockly.Xml.workspaceToDom(Blockly.mainWorkspace);
+                var xmlText = Blockly.Xml.domToPrettyText(xmlDom);
+                localStorage.setItem("R4G_" + eingabe, xmlText);
+                alert("Programm '" + eingabe + "' gespeichert");
+            }
+        }
+
+        function restore() {
+            var storage_items = "";
+            for (let i = 0; i < localStorage.length; i++) {
+                if (localStorage.key(i).includes("R4G_")) {
+                    let key_i = localStorage.key(i).replace("R4G_", "");
+                    storage_items += key_i + "\n";
+                }
+            }
+            if (storage_items === "") {
+                alert("Keine gespeicherten Programme vorhanden");
+                return 1;
+            }
+            var eingabe = prompt(storage_items + '\nProgramm laden:', '');
+            if (eingabe != null) {
+                if (eingabe === "" || !storage_items.includes(eingabe)) {
+                    alert('Kein Programm mit Namen "' + eingabe + '" vorhanden');
+                    return 1;
+                }
+                workspace.clear();
+                var xmlText = localStorage.getItem("R4G_" + eingabe);
+                var xmlDom = Blockly.Xml.textToDom(xmlText);
+                Blockly.Xml.domToWorkspace(xmlDom, Blockly.mainWorkspace);
+                alert("Programm '" + eingabe + "' wird geladen...");
+            }
+        }
+
+        function deleteAll() {
+            var count = 0;
+            for (let i = 0; i < localStorage.length; i++) {
+                var keyName = localStorage.key(i);
+                if (keyName.includes("R4G_")) {
+                    count++;
+                    if (confirm('Programm ' + keyName + ' löschen?')) {
+                        localStorage.removeItem(keyName);
+                    }
+                }
+            }
+            if (count == 0) {
+                alert("Keine gespeicherten Programme vorhanden");
+            }
+        }
+
+        function deleteItem() {
+            var storage_items = "";
+            for (let i = 0; i < localStorage.length; i++) {
+                if (localStorage.key(i).includes("R4G_")) {
+                    let key_i = localStorage.key(i).replace("R4G_", "");
+                    storage_items += key_i + "\n";
+                }
+            }
+            if (storage_items === "") {
+                alert("Keine gespeicherten Programme vorhanden");
+                return 1;
+            }
+            var eingabe = prompt(storage_items + '\nProgramm löschen:', '');
+            if (eingabe != null) {
+                if (eingabe === "" || !storage_items.includes(eingabe)) {
+                    alert('Kein Programm mit Namen "' + eingabe + '" vorhanden');
+                    return 1;
+                }
+                if (confirm('Programm ' + eingabe + ' löschen?')) {
+                    localStorage.removeItem("R4G_" + eingabe);
+                }
+            }
+        }
+
+        function end_program() {
+            workspace.clear();
+            onDisconnectButtonClick();
+        }
+    </script>
+
+    <!-- blockly programming window -->
+    <div id="blocklyDiv" style="position: absolute"></div>
+
+    <!-- R4G blocks design -->
+    <xml xmlns="http://www.w3.org/1999/xhtml" id="toolbox" style="display: none;">
+        <!-- Category Movements -->
+        <category name="Bewegungen" colour="#5b5ba5">
+            <block type="forward">
+                <field name="forward_duration">0.1</field>
+            </block>
+            <block type="back">
+                <field name="back_duration">0.1</field>
+            </block>
+            <block type="left">
+                <field name="left_duration">0.1</field>
+            </block>
+            <block type="right">
+                <field name="right_duration">0.1</field>
+            </block>
+            <block type="turn_left">
+                <field name="turn_left_duration">0.1</field>
+            </block>
+            <block type="turn_right">
+                <field name="turn_right_duration">0.1</field>
+            </block>
+        </category>
+        <category name="Kombinationen" colour="#a55b6d">
+            <block type="dance">
+                <field name="repeat">1</field>
+                <field name="intensity">kurz</field>
+            </block>
+            <block type="zigzag">
+                <field name="repeat">1</field>
+                <field name="intensity">kurz</field>
+            </block>
+            <block type="shake">
+                <field name="repeat">1</field>
+                <field name="intensity">kurz</field>
+            </block>
+            <block type="pirouette">
+                <field name="repeat">1</field>
+                <field name="direction">Links</field>
+            </block>
+        </category>
+        <category name="Melodie" colour="#a55b5b">
+            <block type="melody">
+                <field name="melody">M1</field>
+            </block>
+        </category>
+        <category name="LED-Anzeige" colour="#5ba593">
+            <block type="show_text"></block>
+            <block type="show_picture">
+                <field name="pic">Wähle ein Bild</field>
+                <field name="show_duration">1</field>
+            </block>
+        </category>
+        <category name="Steuerung" colour="#5ba55b">
+            <block type="repetition">
+                <field name="repetition">1</field>
+            </block>
+        </category>
+        <category name="Einstellungen" colour="#a5a55b">
+            <block type="motor">
+                <field name="motor">1</field>
+                <field name="velocity">400</field>
+            </block>
+        </category>
+    </xml>
+
+    <!-- Making Toolbox visible and resizable in Web-browser -->
+    <script>
+        var blocklyArea = document.getElementById('blocklyArea');
+        var blocklyDiv = document.getElementById('blocklyDiv');
+        var workspace = Blockly.inject('blocklyDiv', {
+            media: 'media/',
+            toolbox: document.getElementById('toolbox')
+        })
+
+        var onresize = function(e) {
+            // Compute the absolute coordinates and dimensions of blocklyArea.
+            var element = blocklyArea;
+            var x = 0;
+            var y = 0;
+            do {
+                x += element.offsetLeft;
+                y += element.offsetTop;
+                element = element.offsetParent;
+            } while (element);
 
-	<!-- script for bluetooth communication -->
-	<script type="text/javascript" src="scripts/ble3.js"></script>
+            // Position blocklyDiv over blocklyArea.
+            blocklyDiv.style.left = x + 'px';
+            blocklyDiv.style.top = y + 'px';
+            blocklyDiv.style.width = blocklyArea.offsetWidth + 'px';
+            blocklyDiv.style.height = blocklyArea.offsetHeight + 'px';
+            Blockly.svgResize(workspace);
+        };
 
-	<script>
-		/* toggle between hiding and showing the dropdown content */
-		function showMenu() {
-			document.getElementById("myDropdown").classList.toggle("show");
-		}
-		// Close the dropdown menu if the user clicks outside of it
-		window.onclick = function(event) {
-			if (!event.target.matches('.dropbtn')) {
-				var dropdowns = document.getElementsByClassName("dropdown-content");
-				var i;
-				for (i = 0; i < dropdowns.length; i++) {
-					var openDropdown = dropdowns[i];
-					if (openDropdown.classList.contains('show')) {
-						openDropdown.classList.remove('show');
-					}
-				}
-			}
-		}
-		
-		/* on Start button clicked */	
-		function handlePlay(event) {
-			let delimiter_microbit = ":";
-			Blockly.JavaScript.addReservedWords('code');
-			var code = "Gb16" + delimiter_microbit + Blockly.JavaScript.workspaceToCode(Blockly.getMainWorkspace());
-			var commands = code.split(delimiter_microbit);
-			var max_length = 19;
-			for(var i = 0; i < commands.length; i++){
-				if(commands[i].length > max_length){
-					commands[i]= commands[i].substring(0, max_length);
-				}
-				commands[i] += delimiter_microbit;
-				console.log(commands[i]);
-			}
-			return sendData(commands);
-		}
-		
-		/* Menu functions */
-		function save(){
-			console.log(localStorage);
-			var eingabe = "";
-			var double = false;
-			eingabe = prompt('Speichern unter:','');
-			if(eingabe === ""){
-				while(eingabe === ""){
-					eingabe = prompt('Bitte Programm benennen:','');
-				}
-			}
-			for(let i = 0; i < localStorage.length; i++){
-				if(localStorage.key(i).includes("R4G_"+eingabe)){
-					double = true;
-				}
-			}
-			if(double){
-				if(!confirm("Programm ist bereits vorhanden\nSoll es überschrieben werden?")){
-					return 1;
-				}
-			}
-			if(eingabe != null){
-				var xmlDom = Blockly.Xml.workspaceToDom(Blockly.mainWorkspace);
-        		var xmlText = Blockly.Xml.domToPrettyText(xmlDom);
-        		localStorage.setItem("R4G_" + eingabe, xmlText);
-				alert("Programm '" + eingabe + "' gespeichert");  
-			}
-		}
-		
-		function restore() {	
-			var storage_items = "";
-			for (let i = 0; i < localStorage.length; i++) {
-				if (localStorage.key(i).includes("R4G_")){
-					let key_i = localStorage.key(i).replace("R4G_","");
-					storage_items += key_i + "\n";
-				}
-			}
-			if (storage_items === "") {
-				alert("Keine gespeicherten Programme vorhanden");
-				return 1;
-			}
-			var eingabe = prompt(storage_items + '\nProgramm laden:','');
-			if(eingabe != null){
-				if(eingabe === "" || !storage_items.includes(eingabe)){
-					alert('Kein Programm mit Namen "' + eingabe + '" vorhanden');
-					return 1;
-				}
-				workspace.clear();
-				var xmlText = localStorage.getItem("R4G_" + eingabe);
-				var xmlDom = Blockly.Xml.textToDom(xmlText);
-				Blockly.Xml.domToWorkspace(xmlDom, Blockly.mainWorkspace);
-				alert("Programm '"+ eingabe +"' wird geladen...");
-			}
-		}
-		
-		function deleteAll() {
-			var count = 0;
-			for (let i = 0; i < localStorage.length; i++) {
-				var keyName = localStorage.key(i);
-				if (keyName.includes("R4G_")){
-					count ++;
-					if(confirm('Programm ' + keyName + ' löschen?')) {
-						localStorage.removeItem(keyName);
-					}
-				}
-			}
-			if(count == 0){
-				alert("Keine gespeicherten Programme vorhanden");
-			}
-		}
-		
-		function deleteItem() {
-			var storage_items = "";
-			for (let i = 0; i < localStorage.length; i++) {
-				if (localStorage.key(i).includes("R4G_")){
-					let key_i = localStorage.key(i).replace("R4G_","");
-					storage_items += key_i + "\n";
-				}
-			}
-			if(storage_items === ""){
-				alert("Keine gespeicherten Programme vorhanden");
-				return 1;
-			}
-			var eingabe = prompt(storage_items + '\nProgramm löschen:','');
-			if(eingabe != null){
-				if(eingabe === "" || !storage_items.includes(eingabe)){
-					alert('Kein Programm mit Namen "' + eingabe + '" vorhanden');
-					return 1;
-				}
-				if(confirm('Programm ' + eingabe + ' löschen?')) {
-					localStorage.removeItem("R4G_"+eingabe);
-				}
-			}
-		}
-		
-		function end_program() {
-			workspace.clear();
-			onDisconnectButtonClick();
-		}
-		
-		
-	</script>
-	
-	<!-- blockly programming window -->
-	<div id="blocklyDiv" style="position: absolute"></div>
+        window.addEventListener('resize', onresize, false);
+        onresize();
+        Blockly.svgResize(workspace);
 
-	<!-- R4G blocks design -->
-	<xml xmlns="http://www.w3.org/1999/xhtml" id="toolbox" style="display: none;">
-		<!-- Category Movements -->
-		<category name="Bewegungen" colour="#5b5ba5">
-			<block type="forward">
-				<field name="forward_duration">0.1</field>
-			</block>	
-			<block type="back">
-				<field name="back_duration">0.1</field>
-			</block>
-			<block type="left">
-				<field name="left_duration">0.1</field>
-			</block>
-			<block type="right">
-				<field name="right_duration">0.1</field>
-			</block>
-			<block type="turn_left">
-				<field name="turn_left_duration">0.1</field>
-			</block>
-			<block type="turn_right">
-				<field name="turn_right_duration">0.1</field>
-			</block>
-		</category>
-		<category name="Kombinationen" colour="#a55b6d">
-			<block type="dance">
-				<field name="repeat">1</field>
-				<field name="intensity">kurz</field>
-			</block>
-			<block type="zigzag">
-				<field name="repeat">1</field>
-				<field name="intensity">kurz</field>
-			</block>
-			<block type="shake">
-				<field name="repeat">1</field>
-				<field name="intensity">kurz</field>
-			</block>
-			<block type="pirouette">
-				<field name="repeat">1</field>
-				<field name="direction">Links</field>
-			</block>
-		</category>
-		<category name="Melodie" colour="#a55b5b">
-			<block type="melody">
-				<field name="melody">M1</field>
-			</block>
-		</category>
-		<category name="LED-Anzeige" colour="#5ba593">
-			<block type="show_text"></block>
-			<block type="show_picture">
-				<field name="pic">Wähle ein Bild</field>
-				<field name="show_duration">1</field>
-			</block>
-		</category>
-		<category name="Steuerung" colour="#5ba55b">
-			<block type="repetition">
-				<field name="repetition">1</field>
-			</block>
-		</category>
-		<category name="Einstellungen" colour="#a5a55b">
-			<block type="motor">
-				<field name="motor">1</field>
-				<field name="velocity">400</field>
-			  </block>
-		</category>
-	</xml>
-	
-	<!-- Making Toolbox visible and resizable in Web-browser -->
-	<script>
-		var blocklyArea = document.getElementById('blocklyArea');
-  		var blocklyDiv = document.getElementById('blocklyDiv');
-		var workspace = Blockly.inject('blocklyDiv', {
-			media: 'media/',
-			toolbox: document.getElementById('toolbox')
-		})
-		
-		var onresize = function(e) {
-    			// Compute the absolute coordinates and dimensions of blocklyArea.
-    			var element = blocklyArea;
-    			var x = 0;
-    			var y = 0;
-    			do {
-      				x += element.offsetLeft;
-      				y += element.offsetTop;
-      				element = element.offsetParent;
-    			} while (element);
-    		
-			// Position blocklyDiv over blocklyArea.
-    			blocklyDiv.style.left = x + 'px';
-    			blocklyDiv.style.top = y + 'px';
-    			blocklyDiv.style.width = blocklyArea.offsetWidth + 'px';
-    			blocklyDiv.style.height = blocklyArea.offsetHeight + 'px';
-    			Blockly.svgResize(workspace);
-  		};
-		
-  		window.addEventListener('resize', onresize, false);
-  		onresize();
-  		Blockly.svgResize(workspace);
-		
-		// An href with #key trigers an AJAX call to retrieve saved blocks.
-		if ('BlocklyStorage' in window && window.location.hash.length > 1) {
-      		BlocklyStorage.retrieveXml(window.location.hash.substring(1));
-   		}
-		
-	</script>
-	<!-- Blockly R4G blocks script -->
-	<script src="scripts/R4Gblocks.js"></script>
+        // An href with #key trigers an AJAX call to retrieve saved blocks.
+        if ('BlocklyStorage' in window && window.location.hash.length > 1) {
+            BlocklyStorage.retrieveXml(window.location.hash.substring(1));
+        }
+    </script>
+    <!-- Blockly R4G blocks script -->
+    <script src="scripts/R4Gblocks.js"></script>
 
 </body>
 
-</html>
+</html>
\ No newline at end of file
