function checkRegForm()
{
  var cfname, clname, cemail, ccemail, cdate, cpass, cconf;

  with(window.document.frmRegister)
  {
    cfname = txtFName;
    clname = txtLName;
    cemail = txtEMail;
	ccemail = txtCEMail;
    cpass = txtPWord;
    cconf = txtCPWord;
    cdate = selBDate;
    cmonth = selBMonth;
    cyear = selBYear;
	ccode = code;
	cradSex=radSex;
  }

  if (trim(cfname.value) == '')
  {
    alert('Please enter first name');
    cfname.focus();
    return false;
  }
  else if (trim(clname.value) == '')
  {
    alert('Please enter last name');
    clname.focus();
    return false;
  }
  else if (trim(cemail.value) == '')
  {
    alert('Please enter your email address');
    cemail.focus();
    return false;
  }
  else if ((cradSex[0].checked == false) && (cradSex[1].checked == false) )
  {
    alert('Please choose your Gender: Male or Female');
    
    return false;
  }
  else if (trim(ccode.value) == '')
  {
    alert('Please Enter Code');
    cemail.focus();
    return false;
  }
  else if (!isEmail(trim(cemail.value)))
  {
    alert('Invalid email address');
    cemail.focus();
    return false;
  }
   else if (trim(ccemail.value) == '')
  {
    alert('Please enter your verification email address');
    cemail.focus();
    return false;
  }
  else if (!isEmail(trim(ccemail.value)))
  {
    alert('Invalid verification email address');
    cemail.focus();
    return false;
  }
  else if (trim(cemail.value) != trim(ccemail.value))
  {
    alert('Email does not match');
    cpass.focus();
    return false;
  }
  else if (trim(cpass.value) == '')
  {
    alert('Please enter password');
    cpass.focus();
    return false;
  }
  else if (trim(cconf.value) == '')
  {
    alert('Please retype your password');
    cconf.focus();
    return false;
  }
  else if (trim(cpass.value) != trim(cconf.value))
  {
    alert('Password does not match');
    cpass.focus();
    return false;
  }
  else if (trim(cdate.value) == '')
  {
    alert('Please select Date');
    cdate.focus();
    return false;
  }
  else if (trim(cmonth.value) == '')
  {
    alert('Please select Month');
    cmonth.focus();
    return false;
  }
  else if (trim(cyear.value) == '')
  {
    alert('Please select Year');
    cyear.focus();
    return false;
  }
  else if (trim(cdate.value) != '' && !chkDate(trim(cdate.value), trim(cmonth.value), trim(cyear.value)))
  {
    alert('Invalid date - ' + trim(cdate.value));
    cdate.focus();
    return false;
  }

  return true;
}

function chkDate(strD, strM, strY)
{
  var strDt = strM + '/' + strD + '/' + strY;
  
  var RegExPattern = /^(?=\d)(?:(?:(?:(?:(?:0?[13578]|1[02])(\/|-|\.)31)\1|(?:(?:0?[1,3-9]|1[0-2])(\/|-|\.)(?:29|30)\2))(?:(?:1[6-9]|[2-9]\d)?\d{2})|(?:0?2(\/|-|\.)29\3(?:(?:(?:1[6-9]|[2-9]\d)?(?:0[48]|[2468][048]|[13579][26])|(?:(?:16|[2468][048]|[3579][26])00))))|(?:(?:0?[1-9])|(?:1[0-2]))(\/|-|\.)(?:0?[1-9]|1\d|2[0-8])\4(?:(?:1[6-9]|[2-9]\d)?\d{2}))($|\ (?=\d)))?(((0?[1-9]|1[012])(:[0-5]\d){0,2}(\ [AP]M))|([01]\d|2[0-3])(:[0-5]\d){1,2})?$/;

  if (strDt.match(RegExPattern))
  {
    return true;
  }
  else
  {
    return false;
  }
}

function trim(str)
{
  return str.replace(/^\s+|\s+$/g, '');
}

function isEmail(str)
{
  var regex = /^[-_.a-z0-9]+@(([-a_a-z0-9]+\.)+(ad|ae|aero|af|ag|ai|al|am|an|ao|aq|ar|arpa|as|at|au|aw|az|ba|bb|bd|be|bf|bg|bh|bi|biz|bj|bm|bn|bo|br|bs|bt|bv|bw|by|bz|ca|cc|cd|cf|cg|ch|ci|ck|cl|cm|cn|co|com|coop|cr|cs|cu|cv|cx|cy|cz|de|dj|dk|dm|do|dz|ec|edu|ee|eg|eh|er|es|et|eu|fi|fj|fk|fm|fo|fr|ga|gb|gd|ge|gf|gh|gi|gl|gm|gn|gov|gp|gq|gr|gs|gt|gu|gw|gy|hk|hm|hn|hr|ht|hu|id|ie|il|in|info|int|io|iq|ir|is|it|jm|jo|jp|ke|kg|kh|ki|km|kn|kp|kr|kw|ky|kz|la|lb|lc|li|lk|lr|ls|lt|lu|lv|ly|ma|mc|md|mg|mh|mil|mk|ml|mm|mn|mo|mp|mq|mr|ms|mt|mu|museum|mv|mw|mx|my|mz|na|name|nc|ne|net|nf|ng|ni|nl|no|np|nr|nt|nu|nz|om|org|pa|pe|pf|pg|ph|pk|pl|pm|pn|pr|pro|ps|pt|pw|py|qa|re|ro|ru|rw|sa|sb|sc|sd|se|sg|sh|si|sj|sk|sl|sm|sn|so|sr|st|su|sv|sy|sz|tc|td|tf|tg|th|tj|tk|tm|tn|to|tp|tr|tt|tv|tw|tz|ua|ug|uk|um|us|uy|uz|va|vc|ve|vg|vi|vn|vu|wf|ws|ye|yt|yu|za|zm|zw)|(([0-9][0-9]?|[0-1][0-9][0-9]|[2][0-4][0-9]|[2][5][0-5])\.){3}([0-9][0-9]?|[0-1][0-9][0-9]|[2][0-4][0-9]|[2][5][0-5]))$/i;

  return regex.test(str);
}