//购买和收藏
function sendcart(num, id, c_flag)
{
    window.location.href = "cart.php?action=sendcart&ps_num=" + num + "&ps_goid=" + id + "&ps_select=" + c_flag;
}

//填充数量
function good_cal(id, val)
{
    var objl = document.getElementById(id + "L");
    var obj = document.getElementById(id);
    var obj1 = document.getElementById(id + "1");
    var obj2 = document.getElementById(id + "2");
    if (val > 0)
    {
        obj.value = (obj.value * 1) + 1;

    }
    else
    {
        if (obj.value > 1 && (obj.value > objl.value))
        {
            obj.value = obj.value - 1;
        }
    }
    //填充包装数量
    if (obj2)
        obj2.innerHTML = obj.value * obj1.value;
    return;
}

//批量购买
function sendcartSel()
{
    var ids = "";
    var objs = document.getElementsByTagName("input");
    for (var i = 0; i < objs.length; i++)
    {
        if (objs[i].type.toLowerCase() == "checkbox")
        {
            if (objs[i].checked)
                ids += objs[i].value + "-" + document.getElementById(objs[i].value + "buynum").value + ",";
        }
    }
    var ps_selectids = ids.substr(0, ids.length - 1);
    window.location.href = "cart.php?action=buysel&ps_select=" + ps_selectids;
}


//检查输入购买数量
function checkmin(id)
{
    var v = document.getElementById(id).value;
    var v1 = document.getElementById(id + "L").value;
    if (v < v1)//判断是否小于预定数量
        document.getElementById(id).value = v1;
    else if (!IsNum(v))//判断是否为空或数字
        document.getElementById(id).value = v1;
}

function IsNum(s)
{
    if (s != null && s != "")
        return !isNaN(s);
    return false;
}