function addprod(form) {
	if (form.product.value == "") {
		alert("Please enter product name.");
		form.product.focus();
		return false;
	}
	if (form.stylenum.value == "") {
		alert("Please enter style number.");
		form.stylenum.focus();
		return false;
	}
	if (form.cat.value == "") {
		alert("Please enter category.");
		form.cat.focus();
		return false;
	}
	if (form.subcat.value == "") {
		alert("Please enter subcategory.");
		form.subcat.focus();
		return false;
	}
	if ((form.subcat.value == "newsub") && (document.getElementById('thenewsubfield').value == "")) {
		alert("Please enter a new subcategory.");
		form.newsub.focus();
		return false;
	}

	return true;
}

function addcat(form) {
	if (form.catname.value == "") {
		alert("Please enter category name.");
		form.catname.focus();
		return false;
	}
	return true;
}

function addcol(form) {
	if (form.colourcode.value == "") {
		alert("Please enter colour code.");
		form.colourcode.focus();
		return false;
	}
	if (form.colourname.value == "") {
		alert("Please enter colour name.");
		form.colourname.focus();
		return false;
	}
	return true;
}

function addsize(form) {
	if (form.sizename.value == "") {
		alert("Please enter size.");
		form.sizename.focus();
		return false;
	}
	return true;
}