/**
* CharaGroupƒNƒ‰ƒX
* 
* @author Masayuki Daijima
* http://www.daijima.jp/
* http://twitter.com/daijimachine
*/

function CharaGroup(a){this.list=a;this.moveX=0;this.moveY=0;this.swingX=Math.random()*4-2+Math.random()*6-3;this.swingY=Math.random()*4-2+Math.random()*6-3;this.cnt=0;this.len=this.list.length;this.setMoveXY()}CharaGroup.prototype.update=function(){this.cnt+=0.45;this.moveX=Math.cos(this.cnt)*this.swingX;this.moveY=Math.sin(this.cnt)*this.swingY;this.setMoveXY()};CharaGroup.prototype.setMoveXY=function(){var a;for(var b=0;b<this.len;b++){a=this.list[b];a.moveX=this.moveX;a.moveY=this.moveY}};