diff --git a/assets/css/highContrast.css b/assets/css/highContrast.css
index d951cdd..8cbdcc5 100644
--- a/assets/css/highContrast.css
+++ b/assets/css/highContrast.css
@@ -42,7 +42,7 @@
     font-weight: bold;
     position: relative;
   }
-  .button.large {
+  .button.large, button.danger {
     width: 95%;
   }
   button:hover, .button:hover {
@@ -50,7 +50,17 @@
     background-color:#dadada;
     color:#1f2c3d;
     border-color: #1f2c3d;
-  } 
+  }
+  button.danger{
+    background-color:#2c0000;
+    border: 2px solid #d3ebff;
+  }
+  button.danger:hover{
+    background-color:#00020f;
+    border: 2px solid #791515;
+    color: #791515;
+  }
+
   
   /* Header */
   .header {
@@ -739,6 +749,19 @@ form select option {
   fieldset pre {
     color: red;
   }
+
+  /* Go Up button */
+  .go-up {
+    display: none;
+    padding: 5px;
+    background:#1f2c3d;
+    font-size: 20px;
+    color:#d3ebff;
+    cursor: pointer;
+    position: fixed;
+    bottom: 5px;
+    right: 20px;
+  }
   
   /* Footer */
   footer {
diff --git a/assets/css/main.css b/assets/css/main.css
index 5b8c3aa..1a34d46 100644
--- a/assets/css/main.css
+++ b/assets/css/main.css
@@ -35,14 +35,14 @@ button, .button.large{
   width: 150px;
   height: 30px;
   padding: 5px 10px;
-  background-color :#1f2c3d;
+  background-color:#1f2c3d;
   border: 1px solid #d3ebff;
   text-align: center;
-  color :#d3ebff;
+  color:#d3ebff;
   font-weight: bold;
   position: relative;
 }
-.button.large {
+.button.large, button.danger {
   width: 95%;
 }
 button:hover, .button:hover {
@@ -51,6 +51,16 @@ button:hover, .button:hover {
   color:#1f2c3d;
   border-color: #1f2c3d;
 }
+button.danger{
+  background-color:#2c0000;
+  border: 2px solid #d3ebff;
+}
+button.danger:hover{
+  background-color:#d3ebff;
+  border: 2px solid #791515;
+  color: #791515;
+}
+
 
 /* Header */
 .header {
@@ -734,6 +744,19 @@ fieldset pre {
   color: red;
 }
 
+/* Go Up button */
+.go-up {
+  display: none;
+  padding: 5px;
+  background:#1f2c3d;
+  font-size: 20px;
+  color:#d3ebff;
+  cursor: pointer;
+  position: fixed;
+  bottom: 5px;
+  right: 20px;
+}
+
 
 /* Footer */
 footer {
diff --git a/assets/js/checkPay.js b/assets/js/checkPay.js
index 16bd9ab..9329f06 100644
--- a/assets/js/checkPay.js
+++ b/assets/js/checkPay.js
@@ -41,28 +41,70 @@ $(document).ready(function() {
     $("#card-number-0").change(function(){
         const cardNumber0 = $("#card-number-0");
         cardNumber0[0].setCustomValidity("");
-        $("#card-number-1").change(function(){
-            const cardNumber1 = $("#card-number-1");
-            cardNumber1[0].setCustomValidity("");
-            $("#card-number-2").change(function(){
-                const cardNumber2 = $("#card-number-2");
-                cardNumber2[0].setCustomValidity("");
-                $("#card-number-3").change(function(){                  
-                    const cardNumber3 = $("#card-number-3");
-                    cardNumber3[0].setCustomValidity("");
+        cardNumber1[0].setCustomValidity("");
+        cardNumber2[0].setCustomValidity("");
+        cardNumber3[0].setCustomValidity("");
 
-                    if( (cardNumber0.val().length + cardNumber1.val().length + cardNumber2.val().length +cardNumber3.val().length) === 16 ){
-                        $("#carNumberValid").show();
-                        $("#cardNumerInvalid").hide();
-                        cardNumber0[0].setCustomValidity("");
-                    } else {
-                        $("#carNumberValid").hide();
-                        $("#cardNumerInvalid").show();
-                        cardNumber0[0].setCustomValidity("El número de tarjeta debe tener 16 dígitos.");
-                    }
-                });
-            });
-        });
+        if(cardNumber0.val().length < 4){
+            $("#carNumberValid").show();
+            $("#cardNumerInvalid").hide();
+            cardNumber0[0].setCustomValidity("");
+        } else {
+            $("#carNumberValid").hide();
+            $("#cardNumerInvalid").show();
+            cardNumber0[0].setCustomValidity("El número de tarjeta debe tener 16 dígitos.");
+        }
+    });
+    $("#card-number-1").change(function(){
+        const cardNumber1 = $("#card-number-1");
+        cardNumber0[0].setCustomValidity("");
+        cardNumber1[0].setCustomValidity("");
+        cardNumber2[0].setCustomValidity("");
+        cardNumber3[0].setCustomValidity("");
+
+        if(cardNumber1.val().length < 4){
+            $("#carNumberValid").show();
+            $("#cardNumerInvalid").hide();
+            cardNumber1[0].setCustomValidity("");
+        } else {
+            $("#carNumberValid").hide();
+            $("#cardNumerInvalid").show();
+            cardNumber1[0].setCustomValidity("El número de tarjeta debe tener 16 dígitos.");
+        }
+    });
+    $("#card-number-2").change(function(){
+        const cardNumber2 = $("#card-number-2");
+        cardNumber0[0].setCustomValidity("");
+        cardNumber1[0].setCustomValidity("");
+        cardNumber2[0].setCustomValidity("");
+        cardNumber3[0].setCustomValidity("");
+
+        if(cardNumber2.val().length < 4){
+            $("#carNumberValid").show();
+            $("#cardNumerInvalid").hide();
+            cardNumber2[0].setCustomValidity("");
+        } else {
+            $("#carNumberValid").hide();
+            $("#cardNumerInvalid").show();
+            cardNumber2[0].setCustomValidity("El número de tarjeta debe tener 16 dígitos.");
+        }
+    });
+    $("#card-number-3").change(function(){
+        const cardNumber3 = $("#card-number-3");
+        cardNumber0[0].setCustomValidity("");
+        cardNumber1[0].setCustomValidity("");
+        cardNumber2[0].setCustomValidity("");
+        cardNumber3[0].setCustomValidity("");
+
+        if(cardNumber3.val().length < 4){
+            $("#carNumberValid").show();
+            $("#cardNumerInvalid").hide();
+            cardNumber3[0].setCustomValidity("");
+        } else {
+            $("#carNumberValid").hide();
+            $("#cardNumerInvalid").show();
+            cardNumber3[0].setCustomValidity("El número de tarjeta debe tener 16 dígitos.");
+        }
     });
 
 
diff --git a/assets/js/deleteConfirm.js b/assets/js/deleteConfirm.js
index 70ebd9c..faaae23 100644
--- a/assets/js/deleteConfirm.js
+++ b/assets/js/deleteConfirm.js
@@ -3,26 +3,22 @@
  * CompluCine - FDI-cines
  */
 
-/* TO-DO: NO FUNCIONA LA PETICIÓN AJAX */
+function confirmDelete() {
+	let _delete = confirm("¿Está seguro de que desea eliminar su cuenta de usuario?\nEsta acción no se puede deshacer.");
 
+	if(_delete){
+		document.formDeleteAccount.submit();
+	}
+}
+
+/*
 $(document).ready(function() {
 	document.getElementById("submit").onclick=function(){
 		let _delete = confirm("¿Está seguro de que desea eliminar su cuenta de usuario?\nEsta acción no se puede deshacer.");
 
-		if(_delete == true){
-			//console.log(location.href += "&reply=" + _delete);
-			//location.href += "&reply=" + _delete;
-			$.ajax({
-				url:"./?option=delete_user",
-				type: "POST",
-				data: {reply: "true"},
-				success:function(data){
-					console.log(data.reply);
-				},
-				error:function(data){
-					console.log(data.reply);
-				}
-			 });
+		if(_delete){
+			document.formDeleteAccount.submit();
 		}
 	}
-});
\ No newline at end of file
+});
+*/
\ No newline at end of file
diff --git a/assets/js/goUp.js b/assets/js/goUp.js
new file mode 100644
index 0000000..2cf01f7
--- /dev/null
+++ b/assets/js/goUp.js
@@ -0,0 +1,16 @@
+$(document).ready(function(){
+	$('.go-up').click(function(){
+		$('body, html').animate({
+			scrollTop: '0px'
+		}, 300);
+	});
+
+	$(window).scroll(function(){
+		if( $(this).scrollTop() > 0 ){
+			$('.go-up').slideDown(300);
+		} else {
+			$('.go-up').slideUp(300);
+		}
+	});
+
+});
\ No newline at end of file
diff --git a/assets/php/template.php b/assets/php/template.php
index fc05490..7051192 100644
--- a/assets/php/template.php
+++ b/assets/php/template.php
@@ -683,7 +683,7 @@
             <div class='footer'>
                 <p>© Práctica Final | Sistemas Web 2021 </p>
             </div>
-            <a href='#'>▲Subir</a> |
+            <span class='go-up'>&#x1F51D</span>
             <a href='{$prefix}fdicines/about_us/'>Sobre FDI-Cines</a> |
             <a href='{$prefix}fdicines/terms_conditions/'>Términos de uso</a> |
             <a href='{$prefix}cinemas/'>Nuestros cines</a> |
@@ -700,6 +700,7 @@
         echo"<script type='text/javascript' src='{$prefix}assets/js/jquery-3.2.1.min.js'></script>
         <script type='text/javascript' src='{$prefix}assets/js/cambiarCSS.js'></script>
         <script type='text/javascript' src='{$prefix}assets/js/checkForms.js'></script>
+        <script type='text/javascript' src='{$prefix}assets/js/goUp.js'></script>
         ";
         if($page === "FDI-Cines") echo"<script type='text/javascript' src='{$prefix}assets/js/promotions.js'></script>\n";
         if($page === "Panel de Usuario") echo"<script type='text/javascript' src='{$prefix}assets/js/deleteConfirm.js'></script>\n";
diff --git a/panel_user/includes/formDeleteAccount.php b/panel_user/includes/formDeleteAccount.php
index d686421..fb3aff0 100644
--- a/panel_user/includes/formDeleteAccount.php
+++ b/panel_user/includes/formDeleteAccount.php
@@ -37,8 +37,8 @@ class FormDeleteAccount extends Form {
                                 <label for='verify'>Al marcar esta casilla, verifica y entiende que esta acción no se puede deshacer.</label>
                             </div>
                             <div class='actions'>
-                                <input type='submit' id='submit' value='Eliminar Cuenta de Usuario' class='primary' />
-                                <!-- <input type='submit' id='submit' value='Eliminar Cuenta de Usuario' class='primary' onclick=\"newWindow('confirm.php');\" /> -->
+                                <!-- <input type='submit' id='submit' value='Eliminar Cuenta de Usuario' class='primary' /> -->
+                                <button class='danger' onclick='confirmDelete()'>Eliminar Cuenta de Usuario</button>
                             </div>
                         </div>";
 
diff --git a/purchase/resume.php b/purchase/resume.php
index fdbfaae..8d92906 100644
--- a/purchase/resume.php
+++ b/purchase/resume.php
@@ -10,46 +10,51 @@
     include_once($prefix.'assets/php/includes/cinema_dao.php');
     include_once($prefix.'assets/php/includes/cinema.php');
 
+    if(isset($_SESSION["purchase"]) && isset($_SESSION["film_purchase"])){
+        $purchase = unserialize($_SESSION["purchase"]);
+        $film_purchase = unserialize($_SESSION["film_purchase"]);
+        $sessionDAO = new SessionDAO("complucine");
+        $session = $sessionDAO->sessionData($purchase->getSessionId());
+        $cinemaDAO = new Cinema_DAO("complucine");
+        $cinema = $cinemaDAO->cinemaData($purchase->getCinemaId());
 
-    $purchase = unserialize($_SESSION["purchase"]);
-    $film_purchase = unserialize($_SESSION["film_purchase"]);
-    $sessionDAO = new SessionDAO("complucine");
-    $session = $sessionDAO->sessionData($purchase->getSessionId());
-    $cinemaDAO = new Cinema_DAO("complucine");
-    $cinema = $cinemaDAO->cinemaData($purchase->getCinemaId());
+        unset($_SESSION["purchase"]);
+        unset($_SESSION["film_purchase"]);
 
-    unset($_SESSION["purchase"]);
-    unset($_SESSION["film_purchase"]);
+        $reply = "<h2>Se ha realizado su compra con éxito, a continuación puede ver el resumen:</h2><hr />
+                    <div class='column left'>
+                        <img src='".$prefix."img/films/".$film_purchase->getImg()."' alt='".$film_purchase->getTittle()."' />
+                        <p>Película: ".str_replace('_', ' ', strtoupper($film_purchase->getTittle()))."</p>
+                        <p>Duración: ".$film_purchase->getDuration()." minutos</p>
+                        <p>Idioma: ".$film_purchase->getLanguage()."</p>
+                        <p>Precio: ".$session->getSeatPrice()." €</p>
+                    </div>
+                    <div class='column right'>
+                        <p>Sesión (Fecha): ".$session->getDate()."</p>
+                        <p>Sesión (Hora): ".$session->getStartTime()."</p>
+                        <p>Cine: ".$cinema->getName()."</p>
+                        <p>Sala: ".$purchase->getHallId()."</p>
+                        <p>Asiento (Columna): ".$purchase->getRow()."</p>
+                        <p>Asiento (Fila): ".$purchase->getColumn()."</p>
+                        <p>Hora de la Compra: ".$purchase->getTime()."</p>
+                    </div>
+                    ";
 
-    $reply = "<h2>Se ha realizado su compra con éxito, a continuación puede ver el resumen:</h2><hr />
-                <div class='column left'>
-                    <img src='".$prefix."img/films/".$film_purchase->getImg()."' alt='".$film_purchase->getTittle()."' />
-                    <p>Película: ".str_replace('_', ' ', strtoupper($film_purchase->getTittle()))."</p>
-                    <p>Duración: ".$film_purchase->getDuration()." minutos</p>
-                    <p>Idioma: ".$film_purchase->getLanguage()."</p>
-                    <p>Precio: ".$session->getSeatPrice()." €</p>
-                </div>
-                <div class='column right'>
-                    <p>Sesión (Fecha): ".$session->getDate()."</p>
-                    <p>Sesión (Hora): ".$session->getStartTime()."</p>
-                    <p>Cine: ".$cinema->getName()."</p>
-                    <p>Sala: ".$purchase->getHallId()."</p>
-                    <p>Asiento (Columna): ".$purchase->getRow()."</p>
-                    <p>Asiento (Fila): ".$purchase->getColumn()."</p>
-                    <p>Hora de la Compra: ".$purchase->getTime()."</p>
-                </div>
-                ";
-
-    if(isset($_SESSION["login"]) && $_SESSION["login"] == true){
-        $actions = '<h3>Guarde esta información y enséñela para entrar al cine.</h3><hr />
-                    <p>Se ha guardado la información de la compra en su panel de usuario.</p>
-                    <button onclick="javascript:window.print()">Imprimir<//button>
-                    <a href="'.$prefix.'panel_user/?option=purchases"><button>Mi Historial</button></a>
-                    ';
+        if(isset($_SESSION["login"]) && $_SESSION["login"] == true){
+            $actions = '<h3>Guarde esta información y enséñela para entrar al cine.</h3><hr />
+                        <p>Se ha guardado la información de la compra en su panel de usuario.</p>
+                        <button onclick="javascript:window.print()">Imprimir<//button>
+                        <a href="'.$prefix.'panel_user/?option=purchases"><button>Mi Historial</button></a>
+                        ';
+        } else {
+            $actions = '<h3>Guarde esta información y enséñela para entrar al cine.</h3><hr />
+                        <button onclick="javascript:window.print()">Imprimir<//button>
+                        <!-- <button onclick="javascript:window.print()">Guardar<//button> -->
+                        ';
+        }
     } else {
-        $actions = '<h3>Guarde esta información y enséñela para entrar al cine.</h3><hr />
-                    <button onclick="javascript:window.print()">Imprimir<//button>
-                    ';
+        $reply = '<h2>No se han encontrado datos de compra<h2>';
+        $actions = '';
     }
 
     //Page-specific content: