the link you gave me points to a page with a table set to 50% the old way.
But if you mean that on phones the table get cutoff, then that is probably because you reach the non compressible point of the table.
You need to read the article I referenced below
http://forum.weavertheme.com/discussion/8616/tables-versus-divs-how-to-style-tables-in-weaver
Which explains that inherent issue with tables, and some ways around it