function resetForm(){
	var firstCtrl = document.getElementById("form");
	for(i=0; i<firstCtrl.elements.length; i++){
		if(firstCtrl.elements[i].type == "text"){
			firstCtrl.elements[i].value = "";
		}
		else if(firstCtrl.elements[i].type == "select-one"){
			if(firstCtrl.elements[i].selectedIndex != 0){
				firstCtrl.elements[i].selectedIndex = 0;
			}
		}
		else if(firstCtrl.elements[i].type == "textarea"){
			firstCtrl.elements[i].value = "";
		}
	}
	price_result(period.options[period.selectedIndex].value, kw_count.value);
}