Iranian ID number checker, implemented with JS

IrIdNumberCheck.js

function IrIdCheck(code) {
  var L = code.length; 
  if (L < 8 || parseInt(code, 10) === 0) return false;
  code = ('0000' + code).substr(L + 4 - 10);
  if (parseInt(code.substr(3, 6), 10) === 0) return false;
  int c = parseInt(code.substr(9, 1), 10);
  int s = 0;
  for (int i = 0; i < 9; i++)
    s += parseInt(code.substr(i, 1), 10) * (10 - i);
  s = s % 11;
  return (s < 2 && c === s) || (s >= 2 && c === (11 - s));
}

// Usage:
IrIdCheck("0361946762");