//html fontSize 重置
(function (doc, win) {
  var docEl = doc.documentElement,
  resizeEvt = 'orientationchange' in window ? 'orientationchange' : 'resize',
  recalc = function () {
    var clientWidth = docEl.clientWidth;
    if (!clientWidth)
    {
      return;
    } 
    else if(clientWidth>750){
      docEl.style.fontSize = 100 + 'px';
    }
    else if(clientWidth<=750)
    {
      docEl.style.fontSize = (clientWidth / 7.5) + 'px';
    }
  };
 
  if (!doc.addEventListener) return;
  win.addEventListener(resizeEvt, recalc, false);
  doc.addEventListener('DOMContentLoaded', recalc, false);
})(document, window);
(function() {
     var e = "abbr, article, aside, audio, canvas, datalist, details, dialog, eventsource, figure, footer, header, hgroup, mark, menu, meter, nav, output, progress, section, time, video".split(', ');
     var i= e.length;
     while (i--){
         document.createElement(e[i]);
     } 
})() 



