function checkBrowserEnableCookie(){
    var cookieEnabled=(navigator.cookieEnabled)?true:false
    if(typeof navigator.cookieEnabled=="undefined"&&!cookieEnabled){
        document.cookie="testcookie"
        cookieEnabled=(document.cookie.indexOf("testcookie")!=-1)?true:false
        }
    if(cookieEnabled)return true;else return false;
}
function createCookie(name,value,days){
    if(days){
        var date=new Date();
        date.setTime(date.getTime()+(days*24*60*60*1000));
        var expires="; expires="+date.toGMTString();
    }
    else var expires="";
    document.cookie=name+"="+value+expires+"; path=/";
}
function readCookie(name){
    var nameEQ=name+"=";
    var ca=document.cookie.split(';');
    for(var i=0;i<ca.length;i++){
        var c=ca[i];
        while(c.charAt(0)==' ')c=c.substring(1,c.length);
        if(c.indexOf(nameEQ)==0)return c.substring(nameEQ.length,c.length);
    }
    return null;
}
function eraseCookie(name){
    createCookie(name,"",-1);
}
function countShoppingCart(name){
    if(readCookie(name)==null){
        createCookie(name,'-',1);
    //document.getElementById('count_shopping_cart').innerHTML=0;
    }
    else{
        var current_cart=readCookie(name);
        var ca=current_cart.split(',');
        number_product=ca.length;
    // document.getElementById('count_shopping_cart').innerHTML=number_product-1;
    }
}
function emptyShoppingCart(name){
    createCookie(name,'-',1);
}

function addToShoppingCart(sellid,quantity){
    if(readCookie('shopping_cart')==null){
        createCookie('shopping_cart',',',1);
    }
    var current_cart=readCookie('shopping_cart');
	
    if(current_cart.search(','+sellid+'-')==-1){
        var new_cart=current_cart+','+sellid+'-'+quantity;
        createCookie('shopping_cart',new_cart,1);
        countShoppingCart('shopping_cart');
        window.location = "gio-hang.html";
        document.getElementById('item_'+sellid).innerHTML='Đã thêm vào giỏ hàng';
       
    }else{
        alert('Sản phẩm đã có trong giỏ hàng!');
    }
}
function addToShoppingCartType(sellid,quantity,type){
    if(readCookie('shopping_cart')==null){
        createCookie('shopping_cart',',',1);
    }
    var current_cart=readCookie('shopping_cart');
    //alert(current_cart.search(','+sellid+'-'));
    if(current_cart.search(','+type+'-')==-1){
        var new_cart=current_cart+','+sellid+'-'+quantity+'-'+type;
        createCookie('shopping_cart',new_cart,1);
        countShoppingCart('shopping_cart');
        document.getElementById('item_'+type).innerHTML='Đã vào giỏ hàng';
    }else{
        alert('Sản phẩm đã có trong giỏ hàng!');
    }
}
function checkItemInCart(sellid){
    var current_cart=readCookie('shopping_cart');
    if(current_cart != null && current_cart.search(','+sellid+'-')!=-1){
        document.write('[Trong giỏ hàng]');
    }else{}
}

function checkItemInCartHome(sellid){
    var current_cart=readCookie('shopping_cart');
    if(current_cart != null && current_cart.search(','+sellid+'-')!=-1){}else{}
}

function checkItemInCartType(type){
    var current_cart=readCookie('shopping_cart');
    if(current_cart != null && current_cart.search(','+type+'-')!=-1){
        document.write('[Trong giỏ hàng]');
    }else{}
}

function deleteShoppingCartItem(sellid,quantity){
    if(confirm('Bạn muốn xóa bỏ sản phẩm này khỏi giỏ hàng ? ')){
        var current_cart=readCookie('shopping_cart');
        new_cart=current_cart.replace(","+sellid+'-'+quantity,"");
		
        createCookie('shopping_cart',new_cart,1);
        countShoppingCart('shopping_cart');
        window.location.href='gio-hang.html';
    }
}//minified

function deleteShoppingCartItemType(sellid,quantity,type){
    if(confirm('Bạn muốn xóa bỏ sản phẩm này khỏi giỏ hàng ? ')){
        var current_cart=readCookie('shopping_cart');
		
        new_cart=current_cart.replace(","+sellid+'-'+quantity+'-'+type,"");
        //alert(new_cart);
        createCookie('shopping_cart',new_cart,1);
        countShoppingCart('shopping_cart');
        window.location.href='?option=cart';
    }
}//minified

//show menu
function showSub(groupId){
    var check = document.getElementById(groupId).style.display;	
    if(check =="none"){
        document.getElementById("icon_"+groupId).innerHTML = "<img src=\"/includes/images/circle_open.gif\">";
        $("#"+groupId).slideDown("slow");
    }else{
        document.getElementById("icon_"+groupId).innerHTML = "<img src=\"/includes/images/invi.gif\">";
        $("#"+groupId).slideUp("slow");
    }
}
 
 
function showDateTime(showDate, dateFormat, showTime, showAsGMT)
{
    var days = new Array("Ch&#7911; nh&#7853;t","Th&#7913; hai","Th&#7913; ba","Th&#7913; t&#432;","Th&#7913; n&#259;m","Th&#7913; s&#225;u","Th&#7913; b&#7843;y");
    var months = new Array("01","02","03","04","05","06","07","08","09","10","11","12");
    var datetime = getDateTime(showDate, dateFormat, showTime, showAsGMT, days, months, "/", "/");
    document.write("<nobr>&nbsp;" + datetime + "&nbsp;</nobr>");
}

function getDateTime(showDate, dateFormat, showTime, showAsGMT)
{
    var days = arguments[4]||new Array("Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday");
    var months = arguments[5]||new Array("Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec");
    var monthSeperate = arguments[6]||"-";
    var yearSeperate = arguments[7]||"-";
    var now = new Date();
    var month = "";
    var day = "";
    var time = "";
    var first_date_num ="";
    var result = "";

    // show date
    if(showDate)
    {
        // long date
        if(dateFormat!="0")
            day = days[now.getDay()] + ", ";
        month = months[now.getMonth()];
        if (now.getDate() < 10)
            first_date_num = "0";
        result += day + first_date_num + now.getDate() + monthSeperate + month + yearSeperate + now.getFullYear();
    }
	
    // show time
    if(showTime)
    {
        var symbol = "AM";
        if(showAsGMT)
            time = new String(now.getUTCHours());
        else
            time = new String(now.getHours());
        if(time>=12)
        {
            time = time - 12;
            symbol = "PM";
        }
        if (time.length < 2)
            time = "0" + time;
        var minute = new String(now.getMinutes());
        if (minute.length < 2)
            minute = "0"+ minute;
        time = time  + ":" + minute + "&nbsp;" + symbol;
        if(showAsGMT)
            time += " (GMT)";
        if(result!="")
            result += "&nbsp;&nbsp;";
        result += time;
    }
	
    return result;
}

function createPriceSearch(min_max){
    var price_array = min_max.split(",");
    var max_price = price_array[1];
    var min_price = price_array[0];
    document.getElementById('max_price').value = max_price;
    document.getElementById('min_price').value = min_price;
}

function show(elementId){

    var checked = document.getElementById(elementId).style.display;	
    if(checked == "none"){
        document.getElementById(elementId).style.display = "block";
    }else{
        document.getElementById(elementId).style.display = "none";
    }
}

function chooseShippingOption(method_id){
    document.getElementById('selectShippingMethod').value = method_id;
}

function choosePaymentOption(option) {
    var checked = document.getElementById(option).checked;
    var instId = document.getElementById(option).value;
    if (checked) {
        document.getElementById("selectPaymentMethod").value = instId;
         
        //Hide other options
        for (var i in paymentOptionList) {
            if (option != paymentOptionList[i]) {
                document.getElementById("pay_" + paymentOptionList[i]).style.display = "none";
                document.getElementById(paymentOptionList[i]).checked = false;
            }
        }
        //show the instruction
        document.getElementById("block_" + instId).style.display = "block";
    } else {
        document.getElementById("selectPaymentMethod").value = "0";
        //Uncheck, show other options again
        for (var i in paymentOptionList) {
            document.getElementById("pay_" + paymentOptionList[i]).style.display = "block";
            document.getElementById(paymentOptionList[i]).checked = false;
            var elt = document.getElementById(paymentOptionList[i]).value;
            document.getElementById("block_"+elt).style.display = "none";
        }
    }
}

function add_to_listSS(chk_name, hdn_id, productId) {
    var checked = document.getElementById("chk_" + productId).checked;
    var currentList = document.getElementById("hdn_compare_product_list").value;
    var currentNumItem = currentList.split(";").length - 2;
    var productImageUrl = document.getElementById("productHiddenImage_" + productId).value;
    var iconHtml = "<img src=\"" + productImageUrl + "\" width=26 height=26 style='border:1px solid #FF9900'>";

    if (checked == true) {

        if (currentNumItem > 4) {
            //Cho phep so sánh tối đa 5 sản phẩm
            document.getElementById("chk_" + productId).checked = "";
            alert("Bạn chỉ có thể so sánh tối đa 5 sản phẩm\nDanh sách đã có đủ 5");
        } else {

            document.getElementById("hdn_compare_product_list").value = currentList + productId + ";";

            //Thêm tiếp ảnh
            nextContainer = currentNumItem + 1;
            document.getElementById("compareItemContain_" + nextContainer).innerHTML = iconHtml;
            document.getElementById("productItemContain_" + nextContainer).value = productId;
        }
    } else {
        document.getElementById("hdn_compare_product_list").value = currentList.replace(";" + productId + ";", ";");
        //Xóa bỏ ảnh
        var containId = 0;
        for (var i = 1; i <= currentNumItem; i++) {
            var productContainer = document.getElementById("productItemContain_" + i).value;
            if (productContainer != "") {
                if (productId == productContainer) {
                    document.getElementById("compareItemContain_" + i).innerHTML = "";
                    document.getElementById("productItemContain_" + i).value = "";
                    containId = i;
                    break;
                }
            }
        }
        //Sắp xếp lại ảnh
        if (containId != 0) {
            arrangeImageContainer(containId, 3);
        }
    }
}

function selectThum(img_url,width){
    document.getElementById('productImageBox').innerHTML = "<img src="+ img_url +" width="+width+">";
}