function validcontact(txtname, txtEmail, txtcontact, txtcomment) {
    if (emptyField(txtname)) {
        alert('Please enter your Name.');
        txtname.focus();
		return false;
}

if (emptyField(txtEmail)) {
    alert('Please enter your E-mail Address.');
    txtEmail.focus();
    return false;
}

if (!validEmailId(txtEmail.value)) {
    alert('Please Enter Valid E-mail Address.');
        txtEmail.focus();
        return false;
    }
    if (emptyField(txtcontact)) {
        alert('Please Enter your Contact No.');
        txtcontact.focus();
		return false;
    }

    if (emptyField(txtcomment)) {
        alert('Please enter your Message.');
        txtcomment.focus();
        return false;
    }
  
  
}