responsive.js

(function(){
  var target = 960;
  var $body = document.querySelector('#container');

  $body.style.width = target+'px';
  $body.style.height = $body.offsetHeight+'px';
  $body.style.transformOrigin = '0 0';

  window.addEventListener('resize',function(ev) {
    window.scaleMultiplier = window.innerWidth/target;
    $body.style.transform = 'scale('+window.scaleMultiplier+')';
  });
  window.dispatchEvent(new Event('resize'));
})();

hey i made this into a real library! https://github.com/walaura/desktop-viewport