Kevin, one place you might start is in the browse's embed: User did something in browser | User clicked on a row in the browse. You might be able to do some code that checks for the delete action and intercept it before it calls the alert to confirm delete.
There's a reference to the delete popup window in the netweb.js and the function is preparedelete, but I can't seem to find the reference to it in the browse or form. I would think the source of that function being called is where you'd want to put your delete code.