This effect allows the row where the cursor is to be highlighted by changing its color as you move the cursor around and over the summary and race tables.

You can of course simply add the hover effect to the style by adding one or two lines of CSS and some of the styles do have this implemented already.  This is an effect which you can turn on or off at the point of publishing by selecting the Hover effect implementing it as Javascript .  The colour is a rather boring grey so that it works with all the different styles available but feel free to change your copy if you wish.

It can be combined with other effects such as HighlightWins3v3 if required

It can be downloaded from here.
Save it in your custom effects folder as specified in the Setup – Global options- folders – My script folder, the default for this is
C:\Users\Public\Documents\Sailwave\Javascript