Description:
------------
It seems that passing more than one argument to a constructor class cause an uncaught crash in the script, while call:

  var c = new Cow('Molly');

works as expected, calling:

  var c = new Cow('Molly','Bar');
cause a crash without any error

maybe it's my problem but I've tried anything reducing the problem to the default example.

thanks for the great work anyway

Reproduce code:
---------------
class Cow {

  private $_name;
  private $_milked;

  public function __construct($name, $name2) {
    $this->setName($name.' and '.$name2);
    $this->_milked = 0;
  }

  // name setter/getter
  public function setName($name) {
    $this->_name = $name;
  }

  public function getName() {
    return $this->_name;
  }

  // milking status setter/getter
  public function milk() {
    $this->_milked = 1;
  }

  public function getMilked() {
    return $this->_milked;
  }

  public function output() {
    if ($this->getMilked() == 1) {
      return $this->getName() . ' has been milked today.';
    } else {
      return 'Time to milk ' . $this->getName();
    }

  }
}




$script = <<<END
  var c = new Cow('Molly','Bar');
  var d = new Date();
  var ch = d.getHours();
  if (ch > 8) {
    c.milk();
  }
  c.output();  
END;
echo $js->evaluateScript($script);