SPF: Ignore clicks with alternate buttons (e.g. middle-click)
SPF: Ignore clicks with alternate buttons (e.g. middle-click)


[git-p4: change = 41595985]

theanh/spfjs,theanh/spfjs,theanh/spfjs,tchiotludo/spfjs,nicksay/spfjs,tchiotludo/spfjs,DavidCPhillips/spfjs,nicksay/spfjs,DavidCPhillips/spfjs,theanh/spfjs,theanh/spfjs,tchiotludo/spfjs,youtube/spfjs,scrapp-uk/spfjs,tchiotludo/spfjs,scrapp-uk/spfjs,youtube/spfjs,youtube/spfjs,scrapp-uk/spfjs,nicksay/spfjs,scrapp-uk/spfjs,scrapp-uk/spfjs,DavidCPhillips/spfjs,nicksay/spfjs,youtube/spfjs,tchiotludo/spfjs,youtube/spfjs,nicksay/spfjs,DavidCPhillips/spfjs