td with display:none should be treated as rowspan=0,colspan=0

Consider a table where some of the are switched on and off by having "style='display:none'". For a of this type, it is removed entirely from the table, and the HTML treats it as never existing (effectively a zero rowspan/colspan).

However, wholly still counts these cells as if they were there with a normal colspan/rowspan of 1.

As a result, the vertical/horizontal highlighting goes completely crooked.