スマートフォン用

zoomer.js

var Zoomer = Zoomer || {};
Zoomer = {
  docWidth :320,
  rate :1,
  isiOs :navigator.userAgent.search(/iPhone|iPod|iPad/) !== -1,
  isAndroid :navigator.userAgent.search(/Android/) !== -1
};

Zoomer.adjust = function(){
  if(Zoomer.isAndroid || Zoomer.isiOs){
    $(window).on('load resize', function(){
      Zoomer.rate = $(window).width() / Zoomer.docWidth;
      $('html').css({
        zoom :Zoomer.rate
      });
    });
  }
};