jquery - Fancybox2: fixed width and dynamic height depending on content -

i using fancybox2 on ajax content , i'm trying set popup dimensions following: fixed width height according content. means, if content "larger" screen's viewport, should overflow , getting scrolled main document's scrollbar. i've tried autoscale popup remains within screen dimensions. ideas how it? thanks

if using fancybox v2.x set fittoview false .... autoscale v1.3.4 , not compatible v2.x