function waterTotal() {
var total, subtotal, dishes, toilet, shower, faucet, laundry, leaks, cistern, xeroscape, leaks;

if (document.getElementById) {
	if (document.getElementById("hs4").style.visibility == 'visible') {
		dishes = 3;
	}
	else {
		dishes = 5;
	}
	
	if (document.getElementById("hs6").style.visibility == 'visible') {
		laundry = 19;
	}
	else {
		laundry = 31;
	}
	
	if (document.getElementById("hs8").style.visibility == 'visible') {
		shower = 12;
		faucet = 14;
	}
	else {
		shower = 23;
		faucet = 23;
	}
	
	if (document.getElementById("hs10").style.visibility == 'visible') {
		toilet = 12;
	}
	else {
		toilet = 31;
	}
	
	if (document.getElementById("hs12").style.visibility == 'visible') {
		xeroscape = 0;
	}
	else {
		xeroscape = 27;
	}
	
	if (document.getElementById("hs2").style.visibility == 'visible') {
		cistern = laundry + toilet;	
	}
	else {
	 	cistern = 0;	
	}
	
	subtotal = (dishes + laundry + shower + toilet + xeroscape + faucet) - cistern;
	leaks = Math.round((subtotal * 14)/100);
	total = subtotal + leaks;
	var totalLeaks = document.getElementById('leak');
	var totalContent = document.getElementById('wc');
	totalLeaks.innerHTML = leaks;
	totalContent.innerHTML = total;
	
}

}