+Some incomplete notes for javascript programmers:
+
+On page load, existing rows are initialized by passing values to addRow
+based on existing cgi values. An empty row (marked with the 'emptyrow'
+attribute) is created by invoking addRow without values. After that,
+to keep the non-empty row count (totalrows) accurate, use newEmptyRow to
+create the next row. There should only be one empty row at a time.
+
+Global vars:
+total_el - element for displaying total number of rows
+totalrows - total number of non-empty rows
+rownum - really more of a "next row" value, used by addRow
+allrows - array of tr elements, one for each row
+
+Don't confuse the global rownum with the element attribute rownum
+that is set as a reference point on some of the elements generated
+by this script. They have different values.