function changeprice(obj) {
	var price = document.getElementById("price");
	var valuex = obj.options[obj.selectedIndex].value;
	if(valuex.indexOf("170")>0){
		price.value = 170;
	}else if(valuex.indexOf("300")>0){
		price.value = 300;
	}else if(valuex.indexOf("380")>0){
		price.value = 380;
	}else if(valuex.indexOf("500")>0){
		price.value = 500;
	}
	 //alert(price.value);
}

function checkindex(){
	var username = document.getElementById("username");
	var address = document.getElementById("address");
	var zipcode = document.getElementById("zipcode");
	var phone = document.getElementById("phone");
	var amount = document.getElementById("amount");
	if(username.value == ""){
		alert("请填写您的姓名！");
		return false;
	}
	if(amount.value < 1){
		alert("购买数量至少为 1 ！");
		return false;
	}
	if(address.value == ""){
		alert("请填写您的地址！");
		return false;
	}
	
	/*if(zipcode.value == ""){
		alert("请填写您的邮编！");
		return false;
	}*/
	
	if(zipcode.value.length>6) {
		alert("邮编最多为6位数字！");
		return false;
	}
	if(phone.value == "") {
		alert("请填写您的电话！");
		return false;
	}
	return true;
}

function sumprice(){
	var appendprice = document.getElementById("appendprice").value;
	var totalprice = document.getElementById("amount").value*document.getElementById("price").value;
	document.getElementById("total").value = parseFloat(appendprice) + parseFloat(totalprice);
}

function showordermsg(originalRequest){
	 $('topdemo1').innerHTML = originalRequest.responseText;
	 msgscoll();
}

function indexordermsg(){
	var url = 'indexordermsg.action';
	var pars = '';
	var myAjax = new Ajax.Request(
		url,
		{
			method: 'get',
			parameters: pars,
            onSuccess: showordermsg
		}
	);
}

function msgscoll(){
	var speed=15;
	document.getElementById("topdemo2").innerHTML=document.getElementById("topdemo1").innerHTML;
	function Marquee(){
		if(document.getElementById("topdemo2").offsetHeight-document.getElementById("topdemo").scrollTop<=0){
			document.getElementById("topdemo").scrollTop-=document.getElementById("topdemo1").offsetHeight;
		}else{
			document.getElementById("topdemo").scrollTop++;
		}
	}
	var MyMar=setInterval(Marquee,speed);
	document.getElementById("topdemo").onmouseover=function() {clearInterval(MyMar)}
	document.getElementById("topdemo").onmouseout=function() {MyMar=setInterval(Marquee,speed)}
}