header.... description
oneof four
twoof four
threeof four
fourof four

There are rows in the above table.

That row Count is determined via JavaScript ("trows:"), which includes one row as a heading row before adjustment. The table needs an id="" the above example used id="mytable".

Here is a bookmarklet (trows) to count and indicate the rows. (click to test, drag the bookmarklet to your bookmarks to use elsewhere.)