This test records target and relatedTarget at each element while dispatching a mouse click event at an input element. Content:
mouseover@input#target target:input#target relatedTarget:null mouseover@div#divInsideSummary target:input#target relatedTarget:null mouseover@summary target:input#target relatedTarget:null mouseover@details target:input#target relatedTarget:null mouseover@div#detailsContainer target:input#target relatedTarget:null mouseover@body target:input#target relatedTarget:null mouseover@html target:input#target relatedTarget:null mouseover@document target:input#target relatedTarget:null mouseover@window target:input#target relatedTarget:null mouseenter@input#target target:input#target relatedTarget:null mouseenter@div#divInsideSummary target:div#divInsideSummary relatedTarget:null mouseenter@summary target:summary relatedTarget:null mouseenter@details target:details relatedTarget:null mouseenter@div#detailsContainer target:div#detailsContainer relatedTarget:null mouseenter@body target:body relatedTarget:null mouseenter@html target:html relatedTarget:null mousemove@input#target target:input#target relatedTarget:null mousemove@div#divInsideSummary target:input#target relatedTarget:null mousemove@summary target:input#target relatedTarget:null mousemove@details target:input#target relatedTarget:null mousemove@div#detailsContainer target:input#target relatedTarget:null mousemove@body target:input#target relatedTarget:null mousemove@html target:input#target relatedTarget:null mousemove@document target:input#target relatedTarget:null mousemove@window target:input#target relatedTarget:null mouseout@input#target target:input#target relatedTarget:div#divInsideSummary mouseout@div#divInsideSummary target:input#target relatedTarget:div#divInsideSummary mouseout@summary target:input#target relatedTarget:div#divInsideSummary mouseout@details target:input#target relatedTarget:div#divInsideSummary mouseout@div#detailsContainer target:input#target relatedTarget:div#divInsideSummary mouseout@body target:input#target relatedTarget:div#divInsideSummary mouseout@html target:input#target relatedTarget:div#divInsideSummary mouseout@document target:input#target relatedTarget:div#divInsideSummary mouseout@window target:input#target relatedTarget:div#divInsideSummary mouseleave@input#target target:input#target relatedTarget:div#divInsideSummary mouseover@div#divInsideSummary target:div#divInsideSummary relatedTarget:input#target mouseover@summary target:div#divInsideSummary relatedTarget:input#target mouseover@details target:div#divInsideSummary relatedTarget:input#target mouseover@div#detailsContainer target:div#divInsideSummary relatedTarget:input#target mouseover@body target:div#divInsideSummary relatedTarget:input#target mouseover@html target:div#divInsideSummary relatedTarget:input#target mouseover@document target:div#divInsideSummary relatedTarget:input#target mouseover@window target:div#divInsideSummary relatedTarget:input#target mousemove@div#divInsideSummary target:div#divInsideSummary relatedTarget:null mousemove@summary target:div#divInsideSummary relatedTarget:null mousemove@details target:div#divInsideSummary relatedTarget:null mousemove@div#detailsContainer target:div#divInsideSummary relatedTarget:null mousemove@body target:div#divInsideSummary relatedTarget:null mousemove@html target:div#divInsideSummary relatedTarget:null mousemove@document target:div#divInsideSummary relatedTarget:null mousemove@window target:div#divInsideSummary relatedTarget:null mousedown@div#divInsideSummary target:div#divInsideSummary relatedTarget:null mousedown@summary target:div#divInsideSummary relatedTarget:null mousedown@details target:div#divInsideSummary relatedTarget:null mousedown@div#detailsContainer target:div#divInsideSummary relatedTarget:null mousedown@body target:div#divInsideSummary relatedTarget:null mousedown@html target:div#divInsideSummary relatedTarget:null mousedown@document target:div#divInsideSummary relatedTarget:null mousedown@window target:div#divInsideSummary relatedTarget:null mouseup@div#divInsideSummary target:div#divInsideSummary relatedTarget:null mouseup@summary target:div#divInsideSummary relatedTarget:null mouseup@details target:div#divInsideSummary relatedTarget:null mouseup@div#detailsContainer target:div#divInsideSummary relatedTarget:null mouseup@body target:div#divInsideSummary relatedTarget:null mouseup@html target:div#divInsideSummary relatedTarget:null mouseup@document target:div#divInsideSummary relatedTarget:null mouseup@window target:div#divInsideSummary relatedTarget:null click@div#divInsideSummary target:div#divInsideSummary relatedTarget:null click@summary target:div#divInsideSummary relatedTarget:null click@details target:div#divInsideSummary relatedTarget:null click@div#detailsContainer target:div#divInsideSummary relatedTarget:null click@body target:div#divInsideSummary relatedTarget:null click@html target:div#divInsideSummary relatedTarget:null click@document target:div#divInsideSummary relatedTarget:null click@window target:div#divInsideSummary relatedTarget:null