//表单提交
function buySubmit(radioName, selectID) {
	var selectValue = document.getElementById(selectID).value;
	
	var selArray = selectValue.split(";");
	if (selArray.length < 4) {
		return false;
	}
	
	document.getElementById("goodsCode").value = getRadioValue(radioName);
	document.getElementById("priceCode").value = selArray[3];
	document.getElementById('form1').submit();
}

//变换下拉选择列表
function changeSelect(selectID, toSelectID, priceID, yearID){
	var selectUse = document.getElementById(selectID);
	var selectBack = document.getElementById(toSelectID);
	
	//复制下拉选择列表
	selectUse.length = 0;
	for (var i=0;i<selectBack.options.length;i++) {
		selectUse.add(new Option(selectBack.options[i].text,selectBack.options[i].value));
	}
	selectUse.selectedIndex = 0;
	
	changePrice(selectUse, priceID, yearID);
}

//变换显示价格
function changePrice(selectObj, priceID, yearID) {
	var selectValue = selectObj.value;
	var selArray = selectValue.split(";");
	if (selArray.length < 4) {
		return false;
	}
	
	document.getElementById(priceID).innerHTML = selArray[0];
	document.getElementById(yearID).innerHTML = selArray[1] + selArray[2];
}

//根据radioName获得被选中的值，如果末选返回false
function getRadioValue(radioName) {
	var radios = document.getElementsByName(radioName);
	for (var i=0;i<radios.length;i++) {
		if (radios[i].checked) {
			return radios[i].value;
		}
	}
	return false;
}