diff --git a/IPython/html/static/base/js/namespace.js b/IPython/html/static/base/js/namespace.js
index 291e113..8b5b76b 100644
--- a/IPython/html/static/base/js/namespace.js
+++ b/IPython/html/static/base/js/namespace.js
@@ -5,5 +5,6 @@ var IPython = IPython || {};
 define([], function(){
     "use strict";
     IPython.version = "3.0.0-dev";
+    IPython._target = '_blank';
     return IPython;
 });
diff --git a/IPython/html/static/edit/js/menubar.js b/IPython/html/static/edit/js/menubar.js
index 5b7dac5..ef5f9ae 100644
--- a/IPython/html/static/edit/js/menubar.js
+++ b/IPython/html/static/edit/js/menubar.js
@@ -49,7 +49,7 @@ define([
         
         //  File
         this.element.find('#new-file').click(function () {
-            var w = window.open();
+            var w = window.open(undefined, IPython._target);
             // Create a new file in the current directory
             var parent = utils.url_path_split(editor.file_path)[0];
             editor.contents.new_untitled(parent, {type: "file"}).then(
diff --git a/IPython/html/static/notebook/js/kernelselector.js b/IPython/html/static/notebook/js/kernelselector.js
index 0c45116..62ad606 100644
--- a/IPython/html/static/notebook/js/kernelselector.js
+++ b/IPython/html/static/notebook/js/kernelselector.js
@@ -273,7 +273,7 @@ define([
 
     KernelSelector.prototype.new_notebook = function (kernel_name) {
         
-        var w = window.open();
+        var w = window.open(undefined, IPython._target);
         // Create a new notebook in the same path as the current
         // notebook's path.
         var that = this;
diff --git a/IPython/html/static/notebook/js/menubar.js b/IPython/html/static/notebook/js/menubar.js
index 270ba38..24464fd 100644
--- a/IPython/html/static/notebook/js/menubar.js
+++ b/IPython/html/static/notebook/js/menubar.js
@@ -76,7 +76,7 @@ define([
             notebook_path
         ) + "?download=" + download.toString();
         
-        var w = window.open();
+        var w = window.open(undefined, IPython._target);
         if (this.notebook.dirty) {
             this.notebook.save_notebook().then(function() {
                 w.location = url;
@@ -101,7 +101,7 @@ define([
         
         this.element.find('#open_notebook').click(function () {
             var parent = utils.url_path_split(that.notebook.notebook_path)[0];
-            window.open(utils.url_join_encode(that.base_url, 'tree', parent));
+            window.open(utils.url_join_encode(that.base_url, 'tree', parent), IPython._target);
         });
         this.element.find('#copy_notebook').click(function () {
             that.notebook.copy_notebook();
diff --git a/IPython/html/static/notebook/js/notebook.js b/IPython/html/static/notebook/js/notebook.js
index 9569a6f..d9c68f3 100644
--- a/IPython/html/static/notebook/js/notebook.js
+++ b/IPython/html/static/notebook/js/notebook.js
@@ -2033,7 +2033,7 @@ define(function (require) {
     Notebook.prototype.copy_notebook = function () {
         var that = this;
         var base_url = this.base_url;
-        var w = window.open();
+        var w = window.open(undefined, IPython._target);
         var parent = utils.url_path_split(this.notebook_path)[0];
         this.contents.copy(this.notebook_path, parent).then(
             function (data) {
diff --git a/IPython/html/static/tree/js/newnotebook.js b/IPython/html/static/tree/js/newnotebook.js
index c4183a3..2256bfa 100644
--- a/IPython/html/static/tree/js/newnotebook.js
+++ b/IPython/html/static/tree/js/newnotebook.js
@@ -75,7 +75,7 @@ define([
         /** create and open a new notebook */
         var that = this;
         kernel_name = kernel_name || this.default_kernel;
-        var w = window.open();
+        var w = window.open(undefined, IPython._target);
         this.contents.new_untitled(that.notebook_path, {type: "notebook"}).then(
             function (data) {
                 var url = utils.url_join_encode(
diff --git a/IPython/html/static/tree/js/notebooklist.js b/IPython/html/static/tree/js/notebooklist.js
index b4b191b..901cc14 100644
--- a/IPython/html/static/tree/js/notebooklist.js
+++ b/IPython/html/static/tree/js/notebooklist.js
@@ -73,7 +73,7 @@ define([
         if (!NotebookList._bound_singletons) {
             NotebookList._bound_singletons = true;
             $('#new-file').click(function(e) {
-                var w = window.open();
+                var w = window.open(undefined, IPython._target);
                 that.contents.new_untitled(that.notebook_path || '', {type: 'file', ext: '.txt'}).then(function(data) {
                     var url = utils.url_join_encode(
                         that.base_url, 'edit', data.path
@@ -568,7 +568,7 @@ define([
         // directory nav doesn't open new tabs
         // files, notebooks do
         if (model.type !== "directory") {
-            link.attr('target','_blank');
+            link.attr('target',IPython._target);
         }
     };
 
diff --git a/IPython/html/static/tree/js/terminallist.js b/IPython/html/static/tree/js/terminallist.js
index b7524ce..8616549 100644
--- a/IPython/html/static/tree/js/terminallist.js
+++ b/IPython/html/static/tree/js/terminallist.js
@@ -42,7 +42,7 @@ define([
     };
 
     TerminalList.prototype.new_terminal = function () {
-        var w = window.open();
+        var w = window.open(undefined, IPython._target);
         var base_url = this.base_url;
         var settings = {
             type : "POST",
@@ -93,7 +93,7 @@ define([
         item.find(".item_icon").addClass("fa fa-terminal");
         var link = item.find("a.item_link")
             .attr('href', utils.url_join_encode(this.base_url, "terminals", name));
-        link.attr('target', '_blank');
+        link.attr('target', IPython._target||'_blank');
         this.add_shutdown_button(name, item);
     };