I Steps: Go to https://www209.americanexpress.com/merchant/singlevoice/USEng/FrontServlet?request_type=navigate&page=processingMain&merch_ne=ProcSuppl_GreenBar II Issue: The leftmost blue column has white space III Conclusion: The code has 2 tables. The parent table has the blue border. Within one of the <td> of the parent table, there's another table with the cyan background. The issue here is that the <td> in the child table (red background) does not span the entire height of the parent table. This is because the height of the parent table is not defined even though the <td> of the parent table that contains the child table has a height defined (for this case 100%) IV Other browsers: FF: ok Opera: not ok IE 7: ok V Nightly tested: r30551