handling for different slices of browsers

scripts/controllers.js

        readBlob(stop, stop + $scope.columns);
      }
      var blob = $scope.file.webkitSlice(start, stop);
      var blob = mySlice($scope.file, start, stop);
      reader.readAsArrayBuffer(blob);
    }
    else {

scripts/utilities.js

    }
    return binary;
}
function mySlice(obj, start, stop) {
    if (obj.mozSlice) {
        return obj.mozSlice(start, stop);
    }
    else if (obj.webkitSlice) {
        return obj.webkitSlice(start, stop);
    }
    else {
        return obj.slice(start, stop);
    }
}