diff --git a/400-SOURCECODE/AIAHTML5.Web/AIAHTML5.Web.csproj b/400-SOURCECODE/AIAHTML5.Web/AIAHTML5.Web.csproj
index 235b697..c1b5c70 100644
--- a/400-SOURCECODE/AIAHTML5.Web/AIAHTML5.Web.csproj
+++ b/400-SOURCECODE/AIAHTML5.Web/AIAHTML5.Web.csproj
@@ -45180,6 +45180,7 @@
     <Content Include="libs\angular-ui\js\slider.js" />
     <Content Include="libs\angular\1.4.9\angular-route.min.js" />
     <Content Include="libs\angular\1.4.9\ngStorage.js" />
+    <Content Include="libs\check_browser_close.js" />
     <Content Include="libs\colorpicker\jquery.minicolors.min.js" />
     <Content Include="libs\FileSaver.js" />
     <Content Include="libs\html2canvas.js" />
diff --git a/400-SOURCECODE/AIAHTML5.Web/index.html b/400-SOURCECODE/AIAHTML5.Web/index.html
index 69dafd1..d63f5ad 100644
--- a/400-SOURCECODE/AIAHTML5.Web/index.html
+++ b/400-SOURCECODE/AIAHTML5.Web/index.html
@@ -1471,6 +1471,7 @@
     <!--<script src="https://cdnjs.cloudflare.com/ajax/libs/html2canvas/0.4.1/html2canvas.js"></script>-->
     <script src="libs/html2canvas.js"></script>
     <script src="libs/FileSaver.js"></script>
+    <script src="libs/check_browser_close.js"></script>
     <!--<script type="text/javascript">
         $(function () {
             $('#canvas').sketch();
diff --git a/400-SOURCECODE/AIAHTML5.Web/libs/check_browser_close.js b/400-SOURCECODE/AIAHTML5.Web/libs/check_browser_close.js
new file mode 100644
index 0000000..b7f8ebb
--- /dev/null
+++ b/400-SOURCECODE/AIAHTML5.Web/libs/check_browser_close.js
@@ -0,0 +1,28 @@
+
+$(window).on('mouseover', (function () {
+    window.onbeforeunload = null;
+}));
+$(window).on('mouseout', (function () {
+    window.onbeforeunload = ConfirmLeave;
+}));
+function ConfirmLeave() {
+    if (typeof (localStorage.getItem("loggedInUserDetails")) !== 'undefined') {
+        localStorage.removeItem('loggedInUserDetails');
+    }
+}
+var prevKey = "";
+$(document).keydown(function (e) {
+    if (e.key == "F5") {
+        window.onbeforeunload = null; // ConfirmLeave;
+    }
+    else if (e.key.toUpperCase() == "W" && prevKey == "CONTROL") {
+        window.onbeforeunload = ConfirmLeave;
+    }
+    else if (e.key.toUpperCase() == "R" && prevKey == "CONTROL") {
+        window.onbeforeunload = null; //ConfirmLeave;
+    }
+    else if (e.key.toUpperCase() == "F4" && (prevKey == "ALT" || prevKey == "CONTROL")) {
+        window.onbeforeunload = ConfirmLeave;
+    }
+    prevKey = e.key.toUpperCase();
+});
\ No newline at end of file