function calculateTotal(divs, cost) {	
	var total = 0;
	for (var i=1; i<=divs; i++) {
		if (document.getElementById('division'+i).checked == true) {
			total += cost;
		}
	}
	var amount = document.getElementById('totalcost');	
	amount.firstChild.nodeValue = '$'+total.toFixed(2)+' (inc. GST)';
}

function openTerms() {
	termswindow = window.open('disclaimer.php', 'termswindow','screenX=200,screenY=200,location=no,directories=no,statusbar=no,toolbar=no,menubar=no,width=550,height=520,resizable=yes,scrollbars=yes');
	termswindow.focus()
}
function openShopInfo() {
	infowindow = window.open('what_is_cvn.php', 'infowindow','screenX=200,screenY=200,location=no,directories=no,statusbar=no,toolbar=no,menubar=no,width=380,height=330,resizable=no,scrollbars=no');
	infowindow.focus()
}
function openInfo() {
	infowindow = window.open('what_is_cvn.php', 'infowindow','screenX=200,screenY=200,location=no,directories=no,statusbar=no,toolbar=no,menubar=no,width=400,height=320,resizable=no,scrollbars=no');
	infowindow.focus()
}