Navigator 2.0, Internet Explorer 3.0
checked is a read/write Boolean property of the Checkbox object. If the Checkbox is checked, then the checked property is true. If the Checkbox is not checked, then checked is false.
If you set checked to true, then the Checkbox will appear checked. Similarly, if you set this property to false, the Checkbox will appear unchecked. Note that setting the checked property does not cause the Checkbox's onClick event handler to be invoked.