text: /****************************************
   * LeapingJS-slideIn
   * Copyright (c) 2014,2015 Queue Sakura-Shiki
   * Released under the MIT license
   */
  (function(){
  	var	pageChangeFrame = window.LEAPING.PAGE_CHANGE_TIME;
  	window.LEAPING.actions["slide-in"] = function( before, after, frame ) {
  		if( pageChangeFrame === frame ) {
  			before.style.display = "none";
  			before.style.opacity = 1.0;
  			after.style.display  = "block";
  			after.style.opacity  = 1.0;
  			after.style.top = "0%";
  		} else {
  			after.style.top = (100.0*Math.cos((Math.PI/2)*(frame)/pageChangeFrame))+"%";
  			after.style.display  = "block";
  		}
  	};
  })();
  