// JavaScript Document

 var xmlHttp;
 function createXMLHttpRequest() {
     if (window.ActiveXObject) {
         xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
     }
     else if (window.XMLHttpRequest) {
         xmlHttp = new XMLHttpRequest();
     }
 }
 
 function startRequest(url) {
     createXMLHttpRequest();
     xmlHttp.onreadystatechange = handleStateChange;
     xmlHttp.open("GET", url, true);
     xmlHttp.send(null);
 }
 
 function handleStateChange() {
     if(xmlHttp.readyState == 4) {
         if(xmlHttp.status == 200) {
			document.getElementById("Msg").innerHTML=xmlHttp.responseText;
			getimgcode();
         }
     }
}

function addtocart(ProductID){
	startRequest(buildurl("add",ProductID))
	
}

function DelFromcart(ProductID){
	startRequest(buildurl("del",ProductID))
	sleep(500);
	OutScript();
}

function OutScript(){
	startRequest(buildurl("out",''))
}

function PureCart(){
	startRequest(buildurl("pure",''))
	sleep(500);
	OutScript();
}


function buildurl(action,productid){
	var url="cartfun.asp?"
	if (action!=''){url+="action=" + action}
	if (productid!=''){url+="&productid=" + productid}
	return url
}

function   sleep(n){  
	var   start=new   Date().getTime();  
    while(true)   if(new   Date().getTime()-start>n)   break;  
} 
	  
function BuildBill(){
	var str='';
	var i;
	var a=document.SaveBill.getElementsByTagName("input"); //遍历特定tag
	for(i=0;i<a.length;i++){
		str +=a[i].value;  
		if (i < a.length){
			str =str + ',';
		}
	}
	startRequest("cartfun.asp?action=save&val=" + str);
}


function getimgcode()
{
 	var randomnum = Math.random();
 	var getimagecode = document.getElementById("getcode");
 	getimagecode.src = "inc/getcode.asp?" + randomnum;
}

function Check()
{
	if (document.SaveBill.guest.value=='')
	{
		alert('请输入联系人！');
		return false;
	}
	
	if (document.SaveBill.tel.value=='')
	{
		alert('请输入联系电话！');
		return false;
	}
	
	
	if (document.SaveBill.Vcode.value=='')
	{
		alert('请输入验证码！');
		return false;
	}
	
	//document.message.submit();
	return true;
}

function submitForm(){
	if (Check()){
		document.SaveBill.submit();
		}
}