I have a line chart with a number of series. You know how if you mouse over
a line a tool tip shows showing the value, that tells me that excel can
detect the mouse over event over a line. Is it then possible to use this
capability to change the colour of the line whilt the mouse is over it? The
effect I am after is a glow when the mouse is over a particular line on the
chart.

Any help would be much appreciated as it will be a cool effect.

Kind regards, Mark Stephens