function updateCalc1(el) {
	var first = el.options[el.selectedIndex].value;
	var sels = document.getElementById('selects');
	for (var i=0; i<sels.childNodes.length; i++) {
		var child = sels.childNodes[i];
		if (i==first) child.className='';
		else child.className='calc-hidden';
	}
	updateTotal();
}
function updateTotal() {
	var el = document.getElementById('calc-sel');
	var first = el.options[el.selectedIndex].value;
	var sels = document.getElementById('selects');
	for (var i=0; i<sels.childNodes.length; i++) {
		var child = sels.childNodes[i];
		if (i==first) {
			var second = child.options[child.selectedIndex].value;
			document.getElementById('price').innerHTML = second;
			break;
		}
	}
}