// JavaScript Document
function showDateVN()
	{
		var strdate;
		var dt = new Date();
		//var strarrDay = new Array("Chủ nhật", "Thứ hai", "Thứ ba", "Thứ tư", "Thứ năm", "Thứ sáu", "Thứ bảy"); 
		var strarrDay = new Array("CN", "Thứ 2", "Thứ 3", "Thứ 4", "Thứ 5", "Thứ 6", "Thứ 7"); 
		var strarrMonth = new Array("01","02","03","04","05","06","07","08","09","10","11","12"); 
			
		var strThu = dt.getDay();
		strThu = strarrDay[strThu] + ", ";
		var strDay=dt.getDate();
		if (strDay<10) strDay="0" + strDay
		var strMonth= dt.getMonth();
		strMonth= strarrMonth[strMonth] ;
		var strYears = dt.getYear();
		if (strYears<1900) strYears += 1900;
			
		strdate=strThu + " " + strDay + "/" + strMonth + "/" + strYears
		window.document.write (strdate);
}

function getposOffset(what, offsettype) {
	var totaloffset = (offsettype=="left")? what.offsetLeft : what.offsetTop;
	var parentEl=what.offsetParent;
	while (parentEl!=null) {
		totaloffset=(offsettype=="left")? totaloffset+parentEl.offsetLeft : totaloffset+parentEl.offsetTop;
		parentEl=parentEl.offsetParent;
	}
	return totaloffset;
}
function expand(s)
{
  var td = s;
  var d = td.getElementsByTagName("div").item(0);
	
  td.className = "title2";
  d.className = "menuHover";
  d.style.top = getposOffset(td, "top");
  d.style.left = getposOffset(td, "left") + 160;
}
function collapse(s)
{
  var td = s;
  var d = td.getElementsByTagName("div").item(0);
  td.className = "title2";
  d.className = "menuNormal";
  //d.offsetTop = 15;
}

function SwitchMenu(obj)
{
	
	if(document.getElementById){
		var el = document.getElementById(obj);

		var ar = document.getElementById("masterdiv").getElementsByTagName("div");
		if(el.style.display != "block"){
			for (var i=0; i<ar.length; i++){
				if (ar[i].className=="submenu")
				ar[i].style.display = "none";
			}
			el.style.display = "block";
		}
		else{
			el.style.display = "none";
		}
	}
}

/*=====Xu ly cho Shopping cart=============*/
function doCheck(status)
{
//Function nay dung cho checkbox checkall va 2 link Check All, Clear All
	var len = document.frmList.elements.length;
	//tinh so phan tu tren form
	len=(len > 5)?document.frmList.chkid.length:0;
	if (len > 0)	
	{
		//duyet tat ca chkid
		for(var i=0; i < len; i++) document.frmList.chkid[i].checked=status;
	}
	else //neu chi co 1 chkid
	{
		document.frmList.chkid.checked=status;
	}
	//gan trang thai cua tag checkall
	document.frmList.chkall.checked=status;
};

function doCheckOne()
{
	//dung cho su kien onClick cua control chkid	
	//Muc dich de kiem tra trang thai cua control checkall
	var len = document.frmList.elements.length;
	
	var isChecked = true;
	len = (len > 5)?document.frmList.chkid.length:0;
	if (len > 0)
	{
		//Kiem tra neu co 1 chkid khong check, set isChecked = false
		for (var i=0; i < len; i++) {
			if (document.frmList.chkid[i].checked == false) isChecked = false;			
		}
	}
	else //neu chi co 1 chkid
	{
		if (document.frmList.chkid.checked == false) isChecked = false;	
	}
	//gan trang thai control checkall bang gia tri cua isChecked
	document.frmList.chkall.checked = isChecked;
};

function CalChecked()
{
	var isChecked = false;
	var strChecked = "";
	var len = document.frmList.elements.length;
	
	len = (len > 5)?document.frmList.chkid.length:0;
	if (len > 0)
	{
		for(var i = 0; i < len; i++)
		{
			if (document.frmList.chkid[i].checked == true)
			{
				strChecked += document.frmList.chkid[i].value + ",";
				isChecked = true;
			}
		}
	}
	else //Neu chi co 1 checkbox
	{
		if (document.frmList.chkid.checked == true)
		{
			strChecked = document.frmList.chkid.value;
			isChecked = true;
		}
	}	
	//Gan vao the Hidden
	document.frmList.tdHidden.value = strChecked;
	if (!isChecked) alert("Vui long chon 1 san pham!");
	
	return isChecked;
};