TableRowBox row = getFirstRow();
if (row != null) {
int spill = 0;
for (Iterator i = row.getChildIterator(); i.hasNext(); ) {
TableCellBox cell = (TableCellBox)i.next();
BorderPropertySet collapsed = cell.getCollapsedPaintingBorder();
int tmp = (int)collapsed.top() / 2;
if (tmp > spill) {
spill = tmp;
}
}