// JavaScript Document
function loadback(){
	window.history.back();
}
//writeCookie("cookie名称","产品ID","产品名称","产品数量",价格)
function writeCookie(name, ID, pro)
{
var test=false;
var values="," + escape(ID) + "$" + escape(pro);
var cookieValue = readCookie(name);
sss=cookieValue.split(",")
for (i=0;i<sss.length;i++){
s=sss[i].split("$");
for(j=0;j<s.length;j++){
if(s[0]==ID)
{
cookieValue=cookieValue.replace(","+sss[i],"");
nums=s[2];
test=true;
alert('The products that you selected had been put into inquiry basket!');
break;
}
}
}
if (test)
{
document.cookie = name + "=" + cookieValue+ "," + escape(ID) + "$" + escape(pro)+"; path=/";
test=false;
}
else
{
document.cookie = name + "=" + cookieValue+values+"; path=/";
alert ('The products that you selected had been put into inquiry basket!');
}
}
function readCookie(name)
{
var cookieValue = "";
var search = name + "=";
if(document.cookie.length > 0)
{
offset = document.cookie.indexOf(search);
if (offset != -1)
{
offset += search.length;
end = document.cookie.indexOf(";", offset);
if (end == -1) end = document.cookie.length;
cookieValue = document.cookie.substring(offset, end)
}
}
return cookieValue;
}//readCookie(name)   此函数为返回已购买的所有内容,包括  物品ID,物品单价,物品名称,物品数量
function stringToInteger (inputString)
{
return parseInt(inputString);
}//stringToInteger(inputString)   返回由字符串(inputString)转换所得到的整数
function isNotaNumber (inputString)
{
return isNaN(inputString);
}//isNotaNumber(inputString)   返回一个 Boolean 值，指明inputString是否是保留值NaN(不是数字)
function UpdateCookie(name,Ids)
{
var buy_num=document.getElementById(Ids);
value=buy_num.value;
s=value.split("$");
value=escape(s[0])+"$"+escape(s[1])
var vvv="";
vvv=readCookie(name);//返回所有购买的内容
vvv=vvv.replace(','+value,"");//把要删除的内容和其前面的","一起置空
document.cookie = name + "=" + vvv+"; path=/";//再把新的内容写入cookie里面
location.reload();
}//UpdateCookie(name, value)   删除value这个内容
function ModifyCookie(name, valuex, ID, pro, num, pri)
{
var vvv="";
vvv=readCookie(name);//返回购买的所有内容,包括  物品ID,物品名称,物品数量,物品单价
s=valuex.split("$");
valuex=escape(s[0])+"$"+escape(s[1])+"$"+escape(s[2])+"$"+escape(s[3])
vvv=vvv.replace(','+valuex,"");//把要修改的内容去掉
document.cookie = name + "=" + vvv + "," + escape(ID) + "$" + escape(pro) + "$" + escape(num) + "$" + escape(pri)+"; path=/";//加上修改后得到的内容
location.reload();
//location.href='?';
}//ModifyCookie(name, valuex, ID, pro, num, pri)   修改内容,valuex为修改前的内容,value1-value4为修改后的内容
function clears(username)
{ var a=null;
document.cookie=username+"="+a+";path=/";
window.location.href='cart.asp';
}//清除COOKIE