"

From 2013.igem.org

/*!

* avgrund 0.1
* http://lab.hakim.se/avgrund
* MIT licensed
*
* Copyright (C) 2012 Hakim El Hattab, http://hakim.se
*/

var Avgrund = (function(){

   var container = document.documentElement,
   popup = document.querySelector( '.avgrund-popup-animate' ),
   cover = document.querySelector( '.avgrund-cover' ),
   currentState = null;

   container.className = container.className.replace( /\s+$/gi,  ) + ' avgrund-ready';

   // Deactivate on ESC
   function onDocumentKeyUp( event ) {

if( event.keyCode === 27 ) { deactivate(); }

   }

   // Deactivate on click outside
   function onDocumentClick( event ) {

if( event.target === cover ) { deactivate(); }

   }

   function activate( state ) {

document.addEventListener( 'keyup', onDocumentKeyUp, false ); document.addEventListener( 'click', onDocumentClick, false ); document.addEventListener( 'touchstart', onDocumentClick, false );

removeClass( popup, currentState ); addClass( popup, 'no-transition' ); addClass( popup, state );

setTimeout( function() { removeClass( popup, 'no-transition' ); addClass( container, 'avgrund-active' ); }, 0 );

currentState = state;

   }

   function deactivate() {

document.removeEventListener( 'keyup', onDocumentKeyUp, false ); document.removeEventListener( 'click', onDocumentClick, false ); document.removeEventListener( 'touchstart', onDocumentClick, false );

removeClass( container, 'avgrund-active' ); removeClass( popup, 'avgrund-popup-animate')

   }

   function disableBlur() {

addClass( document.documentElement, 'no-blur' );

   }

   function addClass( element, name ) {

element.className = element.className.replace( /\s+$/gi, ) + ' ' + name;

   }

   function removeClass( element, name ) {

element.className = element.className.replace( name, );

   }

   function show(selector){

popup = document.querySelector( selector ); addClass(popup, 'avgrund-popup-animate'); activate(); return this;

   }
   function hide() {

deactivate();

   }

   return {

activate: activate, deactivate: deactivate, disableBlur: disableBlur, show: show, hide: hide

   }

})();