I am using Linux Slackware 14.0 with XFCE and can't switch keyboard layouts. This page
keyboard_layout_in_xfce says, that I need to install xfce4-xkb-plugin from
SlackBuilds, but when I open Source Downloads link, it says "Unknown Domain".
I wanted at least to be be to switch the layouts with keyboard, but in Settings -> Keyboard, there is no way to set the shortcuts for switching the layouts.
How can I setup layouts switching in XFCE? Better, if I could set set up an indicator of the current layout on the panel, but it's not obligatory.