app/views/layouts/_modal.html.haml
%div{:id => 'modal', :class => 'modal-popup'}
%header{:class => 'popupHeader'}
%span{:class => 'header_title'}
= @modal_title
%span{:class => 'modal_close'}
%button{:class => 'close', 'data-dismiss' => 'modal', 'aria-label' => 'Close'}
%span{'aria-hidden' => 'true'} ×
%section{:class => 'popupBody'}
= yield