function registerOnChange(el) {
	// registerPrices + vatPercentage by server - see header for orderOnline.php
	var price = registerPrices[el.value];	
	var priceWithVAT = price + (vatPercentage * price) / 100.0;
	priceWithVAT = roundNumber(priceWithVAT,2);
	priceEl = document.getElementById("priceCell");
	priceEl.innerHTML = "<b>&pound;"+price+ " excluding VAT</b> (&pound;"+priceWithVAT+" including "+vatPercentage+"% VAT)";
}

function onLoad(showingForm) {
	if (showingForm) {
		var registerEl = document.getElementById("CompanyRegister");
		if (registerEl) registerOnChange(registerEl);
	}
}