dump empty frames for split-pages
lazy load with deferrered scroll_to
load_page idx now starts from 1; pages_loading move to Viewer instance; fixes; pdf2htmlEX.js.in executable bit removed;
event triggering removed
Merge pull request #171 from micred/lazyload

lazy load with deferrered scroll_to
Merge remote-tracking branch 'origin/lazyload'
add dollar sign for jquery objects
fix .data()