text: if(typeof Math.imul == "undefined" || (Math.imul(0xffffffff,5) == 0)) {
      Math.imul = function (a, b) {
          var ah  = (a >>> 16) & 0xffff;
          var al = a & 0xffff;
          var bh  = (b >>> 16) & 0xffff;
          var bl = b & 0xffff;
          // the shift by 0 fixes the sign on the high part
          // the final |0 converts the unsigned value into a signed value
          return ((al * bl) + (((ah * bl + al * bh) << 16) >>> 0)|0);
      }
  }
  
  
  ;(function(){
  
  })();
  