Microsoft’s Internet Explorer doesn’t support tabs, but here you could choose to override opening in a new window, using right-click to open in the same window.
Here is an example script controlled cross-reference link to the payment details section>
Having said all that, you’ll find cross-reference links not yet fully controlled in this way. I hope to get round to do most of them. One example is the Latest Updates page. The links on the Latest Updates page open a new window by default (it’s designed as page of cross-references). I’ve started changing these (from the top) but it will need a bit of work to do them all because of the number of links involved.
I hope this helps. Let me know if you notice glitches or have particular problems.