Dynamic HTML Tables: Improving Performance
Subject:   Tuned method can fail in Opera 7.22
Date:   2003-11-24 11:38:31
From:   anonymous2
The join() methods fails in Opera 7.22 when the array length exceeds 9999.
It returns an 'undefined' value.

This means you run into problems when you have a 200 x 50 or a 500 x 20 table and you push() each cell individually to the array.