diff --git a/public/scripts/agent-desktop-0.0.2-min.js b/public/scripts/agent-desktop-0.0.2-min.js
index bca1a987..fb7ec243 100644
--- a/public/scripts/agent-desktop-0.0.2-min.js
+++ b/public/scripts/agent-desktop-0.0.2-min.js
@@ -575,7 +575,7 @@ var CreateAgentRemoteDesktop = function (canvasid, scrolldiv) {
                 var Delta = 0;
                 if (Action == obj.KeyAction.UP || Action == obj.KeyAction.DOWN) {
                     if (event.which) { ((event.which == 1) ? (Button = obj.MouseButton.LEFT) : ((event.which == 2) ? (Button = obj.MouseButton.MIDDLE) : (Button = obj.MouseButton.RIGHT))); }
-                    else if (event.button) { ((event.button == 0) ? (Button = obj.MouseButton.LEFT) : ((event.button == 1) ? (Button = obj.MouseButton.MIDDLE) : (Button = obj.MouseButton.RIGHT))); }
+                    else if (typeof event.button == 'number') { ((event.button == 0) ? (Button = obj.MouseButton.LEFT) : ((event.button == 1) ? (Button = obj.MouseButton.MIDDLE) : (Button = obj.MouseButton.RIGHT))); }
                 }
                 else if (Action == obj.KeyAction.SCROLL) {
                     if (event.detail) { Delta = (-1 * (event.detail * 120)); } else if (event.wheelDelta) { Delta = (event.wheelDelta * 3); }
diff --git a/public/scripts/agent-desktop-0.0.2.js b/public/scripts/agent-desktop-0.0.2.js
index 2cff54ad..7cbd4ac5 100644
--- a/public/scripts/agent-desktop-0.0.2.js
+++ b/public/scripts/agent-desktop-0.0.2.js
@@ -575,7 +575,7 @@ var CreateAgentRemoteDesktop = function (canvasid, scrolldiv) {
                 var Delta = 0;
                 if (Action == obj.KeyAction.UP || Action == obj.KeyAction.DOWN) {
                     if (event.which) { ((event.which == 1) ? (Button = obj.MouseButton.LEFT) : ((event.which == 2) ? (Button = obj.MouseButton.MIDDLE) : (Button = obj.MouseButton.RIGHT))); }
-                    else if (event.button) { ((event.button == 0) ? (Button = obj.MouseButton.LEFT) : ((event.button == 1) ? (Button = obj.MouseButton.MIDDLE) : (Button = obj.MouseButton.RIGHT))); }
+                    else if (typeof event.button == 'number') { ((event.button == 0) ? (Button = obj.MouseButton.LEFT) : ((event.button == 1) ? (Button = obj.MouseButton.MIDDLE) : (Button = obj.MouseButton.RIGHT))); }
                 }
                 else if (Action == obj.KeyAction.SCROLL) {
                     if (event.detail) { Delta = (-1 * (event.detail * 120)); } else if (event.wheelDelta) { Delta = (event.wheelDelta * 3); }