Click to play for plugins (Flash, Java) in Firefox

In Google Chrome, there is an option to enable “Click to Play” for plugins, such as Flash, Java, or Silverlight. This makes the browser safer (especially after all the Java security vulnerability in the last time) and a little bit fast. Today, I found out that this option exists in Firefox too – although its a little bit hidden.

To enable “Click to Play” in Firefox…

  1. go to about:config and click on “I’ll be careful, I promise!”
  2. search for plugins.click_to_play and set it to true (by double-clicking the entry)


After that, when you get to a page that contains Flash (videos), Java, or any other plugin, you’ll get a “Click to Play” message for the plugin.


Plotting graphs with R

I recently stumbled over R, a programming language for data analysis. R is open-source and available on all major platforms (Windows, Linux, Mac).

This post is about how to display (draw) a mathematical function with R.

Side note: There’s a very nice and interactive tutorial for R available over at It’s free and takes about 3 – 4 hours to complete.

Read more →

Show Email Addresses in Outlook 2011

If you want Outlook 2011 (for Mac) to display the actual email address for the sender or recipient of an email:

  1. Hover your mouse cursor over the name. A contact card will appear.
  2. Hover your mouse cursor over the name in the contact card. The email address will apear in a tooltip.

Show email address in Outlook 2011

Removing “Bookmarks” button from Firefox bookmarks toolbar

Ever since I updated from Firefox 3.6 to 4.0 (and now 5.0) I had an additional item called “Bookmarks” in my Bookmarks toolbar. For me, it was (and is) unnecessary because I have all my bookmarks on my toolbar (and none of them in the actual Bookmarks menu). So, I was looking for a way to get rid of this button. I did some searching on the Internet but found nothing. So, I just tried to ignore this button.

Bookmarks button on the bookmarks toolbar in Firefox

Today, however, I stumbled over a way to remove this button. Just right-click on an empty space on the toolbar containing the address bar (not on the bookmarks toolbar). A menu will pop up and there you choose Customize.

Customizing Firefox' toolbar

This will allow you to add and/or remove toolbar buttons to Firefox’ main toolbar. Strangely, a new “Bookmarks” button will appear – usually on the right side.

Bookmarks button appeared in Firefox' main toolbar

This is the “Bookmarks” button that is displayed in your Bookmarks toolbar. Remove it (drag it away from the toolbar), close the “Customize” dialog, and the “Bookmarks” button will be gone.

Note: There are actually two bookmark buttons available in Firefox. One with a pulldown arrow to its right and one without. Only the one with the pulldown arrow will be moved to the bookmarks toolbar.