Tommy you can have it both at minimum resource usage and even old machines would swallow it fast as for tablets and "smart phones", I don't know what kind of code has to be inserted I always assumed that when user flips the device, that its device's job to change perspective scrolling down and down is nothing new, its been there for ages and ironically, since CSS 2, DIV layers were widely accepted and were excellent replacement for ordinary Layers and user could finally make dynamic page that would stretch by width (PX or %) so user can read or see more content without scrolling so much and yet now its back to stiff it all in the middle with huge scrolling ONLY because stupid phones well aint that an evolution ahahah