ZVON > References > DOM2 Reference

relatedTarget (attribute )

Owning interface and usage:  
MouseEvent.relatedTarget

Member of these other interfaces:  
none

Readonly:   yes

Type:   EventTarget

Description:  
Used to identify a secondary EventTarget related to a UI event. Currently this attribute is used with the mouseover event to indicate the EventTarget which the pointing device exited and with the mouseout event to indicate the EventTarget which the pointing device entered.