diff --git a/static/img/livros2.jpg b/static/img/livros2.jpg
index 321aabf..1df7715 100644
Binary files a/static/img/livros2.jpg and b/static/img/livros2.jpg differ
diff --git a/static/img/livros3.jpg b/static/img/livros3.jpg
index a83cc48..6e3c1f4 100644
Binary files a/static/img/livros3.jpg and b/static/img/livros3.jpg differ
diff --git a/static/materialize/LICENSE b/static/materialize/LICENSE
index 9853a98..fcff17e 100644
Binary files a/static/materialize/LICENSE and b/static/materialize/LICENSE differ
diff --git a/static/materialize/icons/material_icons.css b/static/materialize/icons/material_icons.css
index 763193f..141d32c 100644
Binary files a/static/materialize/icons/material_icons.css and b/static/materialize/icons/material_icons.css differ
diff --git a/static/scripts/libx.js b/static/scripts/libx.js
index f3025d9..92c284a 100644
--- a/static/scripts/libx.js
+++ b/static/scripts/libx.js
@@ -1,115 +1,111 @@
-var API_XHR = new XMLHttpRequest()
-var API_URL = 'index.php'
-function api(cmd, ok = function (res) {}, error = function (res) {}) {
-  API_XHR.open('POST', API_URL, true)
-  API_XHR.setRequestHeader('Content-Type', 'application/json')
-  API_XHR.onreadystatechange = function () {
-    if (API_XHR.readyState === 4) {
-      if (API_XHR.status === 200) {
-        var res = JSON.parse(API_XHR.responseText)
-        ok(res)
-      } else {
-        error({ res: 'error', msg: 'conection error' })
-      }
+var API_XHR = new XMLHttpRequest();
+var API_URL = "index.php";
+function api(cmd,ok = function (res) { }, error = function (res) { }){
+    API_XHR.open("POST", API_URL, true);
+    API_XHR.setRequestHeader("Content-Type", "application/json");
+    API_XHR.onreadystatechange = function () {
+        if (API_XHR.readyState === 4){
+            if(API_XHR.status === 200) {
+                var res = JSON.parse(API_XHR.responseText);
+                ok(res);
+            }else{
+                error({"res":"error","msg":"conection error"});
+            }
+        }
+    };
+    API_XHR.send(JSON.stringify(cmd));
+    }
+var ultima_aba_mostrada = ""
+function mostrar_aba(aba){
+    if(ultima_aba_mostrada!=""){ document.getElementById(ultima_aba_mostrada).style.display = "none";}
+        document.getElementById(aba).style.display = "block"
+        ultima_aba_mostrada = aba
+        //document.getElementById("titulo_do_menu").innerHTML =  aba 
+    }
+function DEVICE_IS_MOBILE() { 
+    if( navigator.userAgent.match(/Android/i)
+        || navigator.userAgent.match(/webOS/i)
+        || navigator.userAgent.match(/iPhone/i)
+        || navigator.userAgent.match(/iPad/i)
+        || navigator.userAgent.match(/iPod/i)
+        || navigator.userAgent.match(/BlackBerry/i)
+        || navigator.userAgent.match(/Windows Phone/i)
+        ){return true;}else{return false;}
     }
-  }
-  API_XHR.send(JSON.stringify(cmd))
-}
-var ultima_aba_mostrada = ''
-function mostrar_aba(aba) {
-  if (ultima_aba_mostrada != '') {
-    document.getElementById(ultima_aba_mostrada).style.display = 'none'
-  }
-  document.getElementById(aba).style.display = 'block'
-  ultima_aba_mostrada = aba
-  //document.getElementById("titulo_do_menu").innerHTML =  aba
-}
-function DEVICE_IS_MOBILE() {
-  if (
-    navigator.userAgent.match(/Android/i) ||
-    navigator.userAgent.match(/webOS/i) ||
-    navigator.userAgent.match(/iPhone/i) ||
-    navigator.userAgent.match(/iPad/i) ||
-    navigator.userAgent.match(/iPod/i) ||
-    navigator.userAgent.match(/BlackBerry/i) ||
-    navigator.userAgent.match(/Windows Phone/i)
-  ) {
-    return true
-  } else {
-    return false
-  }
-}
 function findGetParameter(parameterName) {
-  var result = null,
-    tmp = []
-  var items = location.search.substr(1).split('&')
-  for (var index = 0; index < items.length; index++) {
-    tmp = items[index].split('=')
-    if (tmp[0] === parameterName) result = decodeURIComponent(tmp[1])
-  }
-  return result
-}
-function setCookie(name, value, days = 1) {
-  var expires = ''
-  if (days) {
-    var date = new Date()
-    date.setTime(date.getTime() + days * 24 * 60 * 60 * 1000)
-    expires = '; expires=' + date.toUTCString()
-  }
-  document.cookie = name + '=' + (value || '') + expires + '; path=/'
-}
-function getCookie(name) {
-  var nameEQ = name + '='
-  var ca = document.cookie.split(';')
-  for (var i = 0; i < ca.length; i++) {
-    var c = ca[i]
-    while (c.charAt(0) == ' ') c = c.substring(1, c.length)
-    if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length, c.length)
-  }
-  return null
-}
-function eraseCookie(name) {
-  document.cookie = name + '=; Max-Age=-99999999;'
-}
-var IMPRIMIR_NO_CONSOLE = true
-function p(text) {
-  if (IMPRIMIR_NO_CONSOLE) {
-    console.log(text)
-  }
-}
-function sortArrayByKeys(dict, reverter = false) {
-  var sorted = []
-  for (var key in dict) {
-    sorted[sorted.length] = key
-  }
-  sorted.sort()
-  if (reverter) {
-    sorted.reverse()
-  }
-  var tempDict = {}
-  for (var i = 0; i < sorted.length; i++) {
-    tempDict[sorted[i]] = dict[sorted[i]]
-  }
-
-  return tempDict
-}
-function arrayRemove(arr, value) {
-  return arr.filter(function (ele) {
-    return ele != value
-  })
-}
-
-const rotateBase64Image = base64data => {
-  const canvas = document.createElement('canvas')
-  const ctx = canvas.getContext('2d')
-  const image = new Image()
-  image.src = base64data
-  return new Promise(resolve => {
-    image.onload = () => {
-      ctx.translate(image.width, image.height)
-      ctx.rotate((45 * Math.PI) / 180)
-      ctx.drawImage(image, 0, 0)
-      resolve(canvas.toDataURL())
+    var result = null,
+        tmp = [];
+    var items = location.search.substr(1).split("&");
+    for (var index = 0; index < items.length; index++) {
+        tmp = items[index].split("=");
+        if (tmp[0] === parameterName) result = decodeURIComponent(tmp[1]);
     }
-  })
-}
+    return result;
+    }
+function setCookie(name,value,days=1) {
+    var expires = "";
+    if (days) {
+        var date = new Date();
+        date.setTime(date.getTime() + (days*24*60*60*1000));
+        expires = "; expires=" + date.toUTCString();
+    }
+    document.cookie = name + "=" + (value || "")  + expires + "; path=/";
+    }
+function getCookie(name) {
+    var nameEQ = name + "=";
+    var ca = document.cookie.split(';');
+    for(var i=0;i < ca.length;i++) {
+        var c = ca[i];
+        while (c.charAt(0)==' ') c = c.substring(1,c.length);
+        if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
+    }
+    return null;
+    }
+function eraseCookie(name) {
+    document.cookie = name+'=; Max-Age=-99999999;';
+    }
+var IMPRIMIR_NO_CONSOLE = true;
+function p(text) {
+    if(IMPRIMIR_NO_CONSOLE){
+        console.log(text);
+    }
+    }
+function sortArrayByKeys(dict,reverter=false) {
+    var sorted = [];
+    for(var key in dict) {
+        sorted[sorted.length] = key;
+    }
+    sorted.sort();
+    if(reverter){
+        sorted.reverse();
+    }
+    var tempDict = {};
+    for(var i = 0; i < sorted.length; i++) {
+        tempDict[sorted[i]] = dict[sorted[i]];
+    }
+
+    return tempDict;
+    }
+function arrayRemove(arr, value) { 
+    
+        return arr.filter(function(ele){ 
+            return ele != value; 
+        });
+    }
+
+const rotateBase64Image = (base64data) => {
+        const canvas = document.createElement("canvas");
+        const ctx = canvas.getContext("2d");
+        const image = new Image();
+        image.src = base64data;
+        return new Promise(resolve => {
+          image.onload = () => {
+            ctx.translate(image.width, image.height);
+            ctx.rotate(45 * Math.PI / 180);
+            ctx.drawImage(image, 0, 0);
+            resolve(canvas.toDataURL())
+          };
+        })
+      }
+      
+    
\ No newline at end of file