diff --git a/js/x11/examples/smoketest/subwindows.js b/js/x11/examples/smoketest/subwindows.js
new file mode 100644
index 0000000..d872c43
--- /dev/null
+++ b/js/x11/examples/smoketest/subwindows.js
@@ -0,0 +1,68 @@
+var x11 = require('../../lib');
+var Window = require('./wndwrap');
+
+x11.createClient(function(err, display) {
+
+    var pts = [];
+    new Window(display.client, 0, 0, 600, 400, display.screen[0].white_pixel)
+        .handle({
+
+            create: function(ev) {
+                console.log(eve);
+            },
+
+            map: function(ev) {
+                console.log(ev);
+
+                for (var i=0; i < 29; ++i)
+                    for (var j=0; j < 19; ++j)
+                    {
+                        new Window( this, 10+i*20, 10+j*20, 17, 17, display.screen[0].black_pixel)
+                           .handle({
+                               mousemove: function() {
+                                   var self = this;
+                                   self.unmap();
+                                   setTimeout(function() {
+                                       self.map();
+                                   }, 500);
+                               }
+                            
+                           })
+                           .map();
+                    }
+            },
+
+            mousemove: function(ev) {
+                if (this.pressed)
+                {
+                    var lastpoly = pts[pts.length - 1];
+                    lastpoly.push(ev.x); 
+                    lastpoly.push(ev.y);
+                    if (lastpoly.length > 3)
+                        this.gc.polyLine(lastpoly.slice(-4));
+                }
+            },
+
+            mousedown: function(ev) {
+                if (ev.keycode == 1) // left button
+                {
+                    this.pressed = true;
+                    pts.push([]);
+		}            
+            },
+
+            mouseup: function(ev) {
+                if (ev.keycode == 1) // left button
+                   this.pressed = false;
+            },
+
+            expose: function(ev) {        
+                //for (var i=0; i < pts.length ; ++i) {
+                //    this.gc.polyLine(pts[i]);
+                //}
+            }
+
+        })
+       .map()
+       .title = 'Hello, world!';
+});