The taborder attribute should be used to control the flow of a user's entry on a web form. Each element, such as input, select, etc… is to be assigned an incrementing taborder value. If an element is not to be included in the taborder, simply give it a value of “-1”. If you don't want to use taborder for every field on the form, but only to prevent tabbing to certain fields, the “-1” value will still work.