HTML and CSS Reference
EXPLANATION ( CONTINUED )
Each object, the form, the textbox, and the button have an event attribute that will
be triggered if the user clicks any of those objects. The argument to this function,
event , is a reference to the particular event that was triggered when the user
clicked it. Output examples are shown in Figures 13.33, 13.34, 13.35, and 13.36.
Figure 13.33 Opera—the mouse has left the button.
Figure 13.34 Microsoft IE—The mouse was clicked in the textbox—bubble up.