only one lightbox can be open at a time
only one lightbox can be open at a time

this makes next/prev links work

koala-framework/koala-framework,Ben-Ho/koala-framework,fraxachun/koala-framework,kaufmo/koala-framework,kaufmo/koala-framework,Sogl/koala-framework,nsams/koala-framework,fraxachun/koala-framework,nsams/koala-framework,koala-framework/koala-framework,Ben-Ho/koala-framework,Sogl/koala-framework,yacon/koala-framework,darimpulso/koala-framework,nsams/koala-framework,yacon/koala-framework,yacon/koala-framework,darimpulso/koala-framework,kaufmo/koala-framework