xbindkeys: cannot get dolphin to react to back/forward mouse buttons

[charles052]

Heres' my .xbindkeysrc configuration:

# dolphin go back
"xte 'keydown Alt_L' 'key Right' 'keyup Alt_L'"
b:9

# dolphin go forward
"xte 'keydown Alt_L' 'key Left' 'keyup Alt_L'"
b:8

I've already added xbindkeys to autostart and I've started it up with both Alt+F2 and the Terminal, but Dolphin never reacts. I don't know what's going on here. I've installed xte and ran xbindkeys-config, but no luck.

Any ideas?