function ValidateInput() {
		
	var mess;
	mess='';
	with (document)
	{
	  	if (FormSubmit.TextBoxFirstName.value == '') mess = 'Please enter your first name.'
		if (FormSubmit.TextBoxLastName.value == '') mess = 'Please enter your last name.'
	  	if (FormSubmit.TextBoxEmail.value == '') mess = 'Please enter your email address.'
	  	if (FormSubmit.TextBoxHomePhone.value == '') mess = 'Please enter your phone number.'
	}
	
	var oVDiv, oVDivText
	var checkbox_choices		

	if (mess!='')
	{
		window.alert(mess)
		return false;
	}
	return true;
	
}