// This script was designed by IT For Charities 
// IT Information for Charities: www.itforcharities.co.uk 
// Please e-mail any comments to ivan@itforcharities.co.uk 

function computeForm(form) {

	calcrate = (form.basictax.value / (100 - form.basictax.value))+1;
	money= 100 * form.donation.value * calcrate;
	money= (Math.round(money))/100;
	form.amount.value = money
	
	highrate = 40
	claimback = 100* money * ((highrate - form.basictax.value)/100);
	claimback= (Math.round(claimback))/100;
	form.highrec.value=claimback

}