If you have set a ‘href’ on any data element:

then you will be notified with a CHREF event whenever the mouse is clicked on this data. The message gives:

1. chart id (string) e.g. ‘2001 forecast’
2. series id (string) e.g. ‘budget’ or null if you don’t set it
3. href text as string e.g. “www.microsoft.com”

You could use this to enable genuine internet browsing, or simply as a convenient way of handling drill-down between charts.

See also ...
chHref – add HTML jumps