function isEmail(namaForm,str) {
  var supported = 0;
  if (window.RegExp) {
    var tempStr = 'a';
    var tempReg = new RegExp(tempStr);
    if (tempReg.test(tempStr)) supported = 1;
  }
  if (!supported) {
    if (str.indexOf('.') > 2 && str.indexOf('@') > 0) {
      return true;
    } else {
      window.alert('Please enter a valid email address.');
      document.namaForm.email.focus();
      return false;
    }
  } else {
    var r1 = new RegExp('(@.*@)|(\\.\\.)|(@\\.)|(^\\.)');
    var r2 = new RegExp('^.+\\@(\\[?)[a-zA-Z0-9\\-\\.]+\\.([a-zA-Z]{2,3}|[0-9]{1,3})(\\]?)$');
    if (!r1.test(str) && r2.test(str)) {
      return true;
    } else {
      window.alert('Please enter a valid email address.');
      document.namaForm.email.focus();
      return false;
    }
  }
}


function cekInput()
{
  email = document.frm1.email.value
  
  if(email == "")
  {
	alert("Please fill in e-Mail address")
    document.frm1.email.focus();
    return false;
  }
}