diff --git a/b2-cwd/integration/live/session4/uglifyjs/README.md b/b2-cwd/integration/live/session4/uglifyjs/README.md
new file mode 100644
index 0000000..9bc2bc6
--- /dev/null
+++ b/b2-cwd/integration/live/session4/uglifyjs/README.md
@@ -0,0 +1,13 @@
+
+## source
+https://www.npmjs.com/package/uglify-js
+
+## installer uglify
+npm install -g uglify-js
+
+## compresser le js :
+uglifyjs .\scripts-sources\main.js --compress -o .\scripts\main.js
+
+## compresser avec source map
+uglifyjs .\scripts-sources\main.js --compress --source-map -o .\scripts\main.js
+
diff --git a/b2-cwd/integration/live/session4/uglifyjs/index.html b/b2-cwd/integration/live/session4/uglifyjs/index.html
new file mode 100644
index 0000000..d7db4e7
--- /dev/null
+++ b/b2-cwd/integration/live/session4/uglifyjs/index.html
@@ -0,0 +1,56 @@
+
+
+
+
+ Réveil
+
+
+
+
+
+
+ Bonjour !
+
+ réveillé à
+
+
100%
+
+ - lien en français
+ - In English please
+ - lien en français
+ - Lorem Ipsum
+ - Tabernacle!
+ - Me llamo Juan
+ - American English
+ - Auf Deutsch
+ - Auf Deutsch
+ - Auf Deutsch
+ - Auf Deutsch
+ - Auf Deutsch
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/b2-cwd/integration/live/session4/uglifyjs/scripts-sources/main.js b/b2-cwd/integration/live/session4/uglifyjs/scripts-sources/main.js
new file mode 100644
index 0000000..f77d9cb
--- /dev/null
+++ b/b2-cwd/integration/live/session4/uglifyjs/scripts-sources/main.js
@@ -0,0 +1,52 @@
+console.log('scripts loaded');
+document.onreadystatechange = function(event) {
+ if (document.readyState === "complete") {
+ if(document.getElementById('pourcent-reveil'))
+ {
+ console.log('has progress bar');
+ setcurrentprogress(document.getElementById('pourcent-reveil'),5);
+ updateprogress(document.getElementById('pourcent-reveil'),5);
+ }
+ if(oLoaded = document.getElementById('loaded'))
+ {
+ console.log('has live content');
+ oLoaded.setAttribute("class","shown");
+ oLoaded.removeAttribute("aria-hidden","true");
+ oLoaded.innerHTML="Document chargé!";
+ oLoaded.setAttribute("aria-live","off");
+ setTimeout(warning, 1500);
+ }
+ document.getElementById('doesnotexist').getAttribute('value');
+ }
+}
+
+function warning()
+{
+ if(document.getElementById('warning'))
+ {
+ document.getElementById('warning').innerHTML="Erreur de communication avec le serveur!";
+ document.getElementById('warning').setAttribute("class","shown");
+ document.getElementById('warning').removeAttribute("aria-hidden");
+ }
+}
+
+function setcurrentprogress(obj,value)
+{
+ obj.setAttribute("value",value);
+ obj.setAttribute("aria-valuenow",value);
+}
+
+function updateprogress(obj, step=5)
+{
+ currentprogress = parseInt(obj.getAttribute("value")) + step;
+ if(currentprogress >= 100)
+ {
+ console.log("finished");
+ setcurrentprogress(obj,100);
+ document.getElementById("finished").setAttribute("style","");
+ return;
+ }
+ console.log("updateprogress to "+currentprogress);
+ setcurrentprogress(obj,currentprogress);
+ setTimeout(updateprogress, 500, obj);
+}
\ No newline at end of file
diff --git a/b2-cwd/integration/live/session4/uglifyjs/scripts/.gitignore b/b2-cwd/integration/live/session4/uglifyjs/scripts/.gitignore
new file mode 100644
index 0000000..5e7d273
--- /dev/null
+++ b/b2-cwd/integration/live/session4/uglifyjs/scripts/.gitignore
@@ -0,0 +1,4 @@
+# Ignore everything in this directory
+*
+# Except this file
+!.gitignore
diff --git a/b2-cwd/integration/live/session4/uglifyjs/style-main.css b/b2-cwd/integration/live/session4/uglifyjs/style-main.css
new file mode 100644
index 0000000..ba7a1ff
--- /dev/null
+++ b/b2-cwd/integration/live/session4/uglifyjs/style-main.css
@@ -0,0 +1,287 @@
+body {
+ font-family: Arial, Helvetica, sans-serif;
+ font-size: 12px;
+}
+
+h4 {
+ font-size: 14px;
+}
+
+body, figure, img {
+ padding: 0;
+ border: none;
+ margin: 0;
+}
+
+#switch:checked ~ p {
+ background-color: green;
+}
+
+.img-wrap img {
+ width: calc(100% - (8px*2));
+ height: auto;
+ margin: 8px;
+ top: 50%;
+ transform: translateY(-25%);
+}
+
+picture {
+ position: relative;
+ display: block;
+ max-height: 40vh;
+ overflow: hidden;
+}
+
+#main-menu {
+ text-align: center;
+}
+#main-menu ul {
+ list-style: none;
+}
+#main-menu li {
+ text-align: left;
+}
+#main-menu li a,
+#main-menu li span,
+#main-menu li label {
+ color: black;
+ text-decoration: none;
+ font-size: 1.1rem;
+}
+#main-menu li span {
+ color: #666;
+}
+#main-menu .menu-label {
+ font-size: 1.5rem;
+ color: black;
+ text-decoration: none;
+ font-weight: bold;
+ display: inline-block;
+ line-height: 2rem;
+}
+
+.burger {
+ float: left;
+ margin: 3px 8px;
+}
+.burger b, .burger i {
+ display: block;
+ width: 20px;
+}
+.burger b {
+ height: 2px;
+ margin-bottom: 5px;
+ position: relative;
+ background: #000;
+ border-radius: 2px;
+ z-index: 1;
+}
+.burger b:first-of-type {
+ margin-top: 5px;
+}
+.burger i {
+ color: blue;
+}
+
+#main-menu ul {
+ display: none;
+}
+
+main, h1 {
+ margin: 1rem;
+ padding: 1rem;
+}
+
+#main-menu #switch:checked ~ ul {
+ display: block;
+}
+
+.contact-form-wrap {
+ display: none;
+}
+
+#show-contact:checked ~ .contact-form-wrap {
+ display: block;
+}
+
+.contact-form-wrap {
+ position: fixed;
+ background-color: rgba(0, 0, 0, 0.25);
+ top: 0;
+ bottom: 0;
+ left: 0;
+ right: 0;
+}
+.contact-form-wrap .h3 {
+ color: white;
+ text-align: center;
+ margin-top: 120px;
+}
+
+.cf-form {
+ background-color: white;
+ position: absolute;
+ top: 50%;
+ left: 50%;
+ transform: translate(-50%, -50%);
+ padding: 20px;
+ border-radius: 20px;
+}
+.cf-input, .cf-label {
+ min-height: 20px;
+ line-height: 20px;
+ box-sizing: border-box;
+ width: 100%;
+ min-width: 30vh;
+}
+.cf-input {
+ border: solid 1px #666;
+ border-radius: 4px;
+ padding: 4px;
+}
+.cf-label {
+ line-height: 30px;
+ box-sizing: border-box;
+}
+.cf-btn {
+ background-color: black;
+ color: white;
+ padding-left: 10px;
+ padding-right: 10px;
+ margin-top: 4px;
+}
+.cf-btn:hover {
+ background-color: white;
+ color: black;
+ transition: color 0.5s;
+}
+.cf-input-group:after {
+ content: "";
+ display: table;
+ clear: both;
+ overflow: auto;
+}
+.cf-close-wrap {
+ margin: -10px -10px 0 -20px;
+}
+.cf-close {
+ display: block;
+ position: relative;
+ box-sizing: border-box;
+ float: right;
+ clear: both;
+ font-size: 20px;
+}
+
+.icon-radio-checked {
+ display: none;
+ color: green;
+}
+
+.icon-radio-unchecked {
+ color: red;
+}
+
+#abonnement-oui:checked ~ .ct-radio .icon-radio-checked {
+ display: inline;
+}
+#abonnement-oui:checked ~ .ct-radio .icon-radio-unchecked {
+ display: none;
+}
+
+#abonnement-non:checked ~ .ct-radio .icon-radio-checked {
+ display: inline;
+}
+#abonnement-non:checked ~ .ct-radio .icon-radio-unchecked {
+ display: none;
+}
+
+.hidden,
+*[aria-hidden] {
+ display: none !important;
+}
+
+.grand-L {
+ height: 16px;
+}
+
+main, aside {
+ box-sizing: border-box;
+}
+
+main {
+ width: calc(100% - 27vw);
+}
+
+.main-stat {
+ max-width: 73vw;
+ float: left;
+ margin: 10px 0 10px -2rem;
+}
+
+aside {
+ width: 25vw;
+ right: 0;
+ top: 75px;
+ position: fixed;
+}
+aside img {
+ max-width: 100%;
+}
+
+footer {
+ color: #a9a9a9;
+ border-top: solid 1px #000;
+ padding: 10px;
+}
+
+a[lang=fr]:after, a[target=_blank]:after {
+ color: blueviolet;
+}
+
+a[lang=fr]::after {
+ content: " [fr]";
+}
+
+a[target=_blank]::after {
+ content: " [^]";
+}
+
+#loaded {
+ background-color: #ccF;
+ border-left: solid 3px blue;
+ color: darkblue;
+ padding: 3px;
+}
+
+#warning {
+ background-color: #Fed;
+ border-left: solid 3px red;
+ color: darkred;
+ padding: 3px;
+}
+
+li[lang] {
+ color: #ccc;
+}
+li[lang=fr] {
+ color: darkblue;
+}
+li[lang^=fr] {
+ color: darkblue;
+}
+li[lang$=CA] {
+ color: blue;
+}
+li[lang*="-"] {
+ font-weight: bold;
+}
+
+span[class~=red] {
+ color: red;
+}
+span[class|=red] {
+ color: darkred;
+}
+
+/*# sourceMappingURL=style-main.css.map */