function validate_required(field,hollar)
{
	with (field)
{
	if (value==null||value=="")
		{alert(hollar);return false}
	else {return true}
}
}

function validate_form(thisform)
{
	with (thisform)
{
	if (validate_required(Manufacturer,"Please specify a Manufacturer.")==false)
		{Manufacturer.focus();return false}

	if (validate_required(Model,"Please specify a Model.")==false)
		{Model.focus();return false}

	if (validate_required(Quality,"Please tell us about the quality of the product purchased.")==false)
		{Quality.focus();return false}

	if (validate_required(Author,"Please fill out your name so we know who gave the review.")==false)
		{Author.focus();return false}

	if (validate_required(Email,"Email must be filled out!")==false)
		{Email.focus();return false}

}
}