Feature detected properties of a browser's event system. Support has the following properties:
clickChanges - clicking on an option element creates a change event.clickSubmits - clicking on a form button submits the form.mouseupSubmits - a mouseup on a form button submits the form.radioClickChanges - clicking a radio button changes the radio.focusChanges - focus/blur creates a change event.linkHrefJS - An achor's href JavaScript is run.mouseDownUpClicks - A mousedown followed by mouseup creates a click event.tabKeyTabs - A tab key changes tabs.keypressOnAnchorClicks - Keying enter on an anchor triggers a click.