function validate(){
  var frm = document.frmlogin;
  if(frm.txtusername.value == ''){
    alert("Please enter your email address.");
	frm.txtusername.focus();
	return false;
  }
  if(frm.txtpassword.value == ''){
    alert("Please enter the password.");
	frm.txtpassword.focus();
	return false;
  }
  return true;
}