JS fixes and some style changes to stylesheet one
Refactored JS (made popUp function to keep code D.R.Y).
Made page unscrollable when popup is active (using CSS classes)
Made sure that the disabled scrolling belongs to the browser document element (to solve iFrame issues)
JS fix (forgot to make document a jQuery object)
Compling to expanded CSS
Merging gh-pages to master
Merge pull request #2 from samlatif/gh-pages

Merging gh-pages to master