onDataSetComplete
The instruction(s) to be executed are placed within quotes. This event handler will execute the instruction(s) when the transfer of data from a data source to an element has completed.

The following example will display text of your choosing in a message box when the transfer of data from a data source to an element has completed:
onDatSetComplete="msgWindow.document.write('-- Insert text message here --')"
This Event Handler is used with the following:

APPLET
AREA
BODY
IMG
OBJECT