Navigator 2.0, Internet Explorer 3.0; enhanced in Navigator 3.0
Only form elements that are buttons invoke the onclick() event handler. These are the Button, Checkbox, Radio, Reset and Submit elements. Other form elements use the onchange() event handler instead of onclick().
Note that the Reset and Submit elements perform a default action when clicked: they reset and submit, respectively, the form that they are a part of. You can use the onclick() event handlers of each of these elements to perform actions in addition to these default actions. In Navigator 3.0, you can also prevent these default actions from occurring by returning false. That is, if the onclick() handler of a Reset button returns false, then the form will not be reset, and if the onclick() handler of a Submit button returns false, then the form will not be submitted. Note that you do similar things with the onsubmit() and onreset() event handlers of the Form object itself.
Finally, note that Link object also defines an onclick() event handler.