engine.js

this.handleGetWorkResponse = function(response){
  var work = eval("(" + response + ")");
  var midstate = jsMiner.Util.fromPoolString(work.midstate);
  var half = work.data.substring(0, 128);
  var data = work.data.substring(128, 256);
  data = jsMiner.Util.fromPoolString(data); 
  half = jsMiner.Util.fromPoolString(half);
  var hash1 = jsMiner.Util.fromPoolString(work.hash1);
  var target = jsMiner.Util.fromPoolString(work.target);  

  this.workerEntry(midstate, half, data, hash1, target, work.first_nonce, work.last_nonce);
};