Euro Drivers Info Point

,SLOVAKIA
here are a few sites as well that may help
LINK-1
LINK-2
LINK-3
LINK-4
;TAKE NOTE OF THIS-Using a toll road without a valid vignette (i.e. without paying the toll) is punishable by a fine of between 300 and 800 euros.
this link below us for SLOVENIA
LINK-5–IN this site is alive link to a list where one can buy the vingette

Hope the above are of use ,