#= require jquery #= require jquery_ujs @resize = () -> $(".with_ratio").each -> ratio = parseFloat($(this).data("ratio")) height = $(this).width()*ratio $(this).css("height",height+"px") $("#logo").css('margin-top': (($(window).height()-($("#logo").outerHeight()+0))/ 2-10)+'px') $ -> $(window).on "resize", -> resize() resize()