Here's a map (from the online Croatia phone book) showing the location of Molvice with relation to Zagreb. Molvice isn't ON the map, but it's shown as the orange circle (partially covering the town name of Gornji Stupnik).

Here's an older map showing the location of Molvice with relation to Samobor. Molvice and Sveti Martin pod Okicem are both in the red outlined area. This map is from Zupa Sveti Martin pod Okicem, the local parish in St Martin. (I think red outline shows the extent of their membership, but until I learn Croatian I won't know for sure.
And here's a map zoomed in from the above phone-book map. This shows Molvice, where both Magda and Mijo were from. It also shows Sveti Martin pod Okicem (SSW of Molvice), which was the location of the local church. Apparently, back-in-the-day, people used to claim the location of their church rather than their town. That's why some of the Ellis Island records show Mijo Pozgaj & siblings originating from St Martin (Saint = Sveti) instead of from Molvice.
Pictures
Most of these pictures were sent to me by Kreso Kufrin, a "new" cousin in the Molvice area. Thanks Kreso!!