[Internet] Gmail's links

Here is something interesting about Gmail I hadn't noticed before:

The links that you click on to read your mail, aren't HTML links at all. There is a slight difference in behavior—When you click on a normal HTML link, the action is triggered when the mouse button is released. In GMail, when you click on your mail, the action is triggered when the mouse button is pressed.

Hmm, they must have some event handler for the onmousedown event.