/*********************************
* Class Email                    *
*                                *
* Methods: check                 *
*            Input: (str String) *
*            Output: (Boolean)   *
*********************************/

function Email()
{
  this.check = function(str)
  {
    var regexpobj = new RegExp('^[_A-Za-z0-9-]+(\\.[_A-Za-z0-9-]+)*@[A-Za-z0-9]+(\\.[A-Za-z0-9]+)*(\\.[A-Za-z]{2,})$', '');
    return regexpobj.test(str);
  };
}