<!-- 
function calculate(form)
{
	var Area = parseInt(form.Area.options[form.Area.selectedIndex].value);
	var Insul = (form.Insul.options[form.Insul.selectedIndex].value);
	var Sunny = (form.Sunny[0].checked) ? 1.1 : 1;
	var Kitchen = (form.Kitchen[0].checked) ? 4000 : 0;
	var Total = parseInt(((Area * Sunny) * Insul) + Kitchen);
	form.Total.value = Total;
}

// -->