function goback(){
	window.history.back();
}

getLink = function(obj)
{
	if(typeof(obj) != 'undefined' && obj!= null){
		var url = obj.value;
		window.open(url,"weblink");
	}
		
}
formreset = function(formname)
{
	if(typeof(window.document.forms[formname]) != 'undefined')
	window.document.forms[formname].reset();
}

function changelang(lang){
	window.document.fromlang.lang.value = lang;
	window.document.fromlang.submit();
}
function changepage(page){
	window.document.frompage.page1.value = page;
	window.document.frompage.submit();
}
goBack = function ()
{
	window.history.back();
}
// JavaScript Document

function loginuser()
{
	var logintemp = window.document.frmlogin;
	if (!checklogin()) return false;
	logintemp.action="index.jsp?idx=index&mod=user&act=login";
	logintemp.submit();
}

function loginSubmit(e)
{
	var keyCode;
         if(window.event)
              keyCode = window.event.keyCode;     //IE
         else
              keyCode = e.which;     //firefox
    
        if (keyCode == 13)
        {
			loginuser();
		}
		 return false;
		
}
function showcurrentdayen(){ 
	var gWeekDay=["Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"];
	var result ="";
	var today = new Date();
	//var date = today.get();
	var year = today.getYear();
	
	var wday = today.getDay();
	result = gWeekDay[wday];
	
	var m = today.getMonth()+1;
	var month = (m < 10) ? '0' + m : m;
	
	var d  = today.getDate();
	var day = (d < 10) ? '0' + d : d;
	
	if(year<1000) year+=1900;
	result += ", " + day + "-" + month + "-" + year ;
	return result;
}

// JavaScript Document
function showcurrentday(){
	var result ="Th&#7913; ";
	var today = new Date();
	//var date = today.get();
	var year = today.getYear();
	
	var wday = today.getDay() + 1;
	if(wday==1) result = "Chủ nhật, ";
	else result += wday + ", " ;
	
	var m = today.getMonth()+1;
	var month = (m < 10) ? '0' + m : m;
	
	var d  = today.getDate();
	var day = (d < 10) ? '0' + d : d;
	
	if(year<1000) year+=1900;
	result += " " + day + "-" + month + "-" + year ;
	return result;
}

checkContactEn = function()
{
	var filter  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
	var obj = window.document.contactForm;
	if(obj.fullname.value == "")
	{
		alert("Please, enter your fullname");
		obj.fullname.focus();
	}
	else if(obj.address.value == "")
	{
		alert("Please, enter your address");
		obj.address.focus();
	}
	else if(obj.tel.value == "")
	{
		alert("Please, enter your telephone number");
		obj.tel.focus();
	}
	else if(obj.email.value == "")
	{
		alert("Please, enter your email");
		obj.email.focus();
	}
	else if (!filter.test(obj.email.value))
	{
		alert("Email is not valid");
		obj.email.select();
	}
	else if(obj.comments.value == "")
	{
		alert("Please, enter your comments");
		obj.comments.focus();
	}
	else if(obj.capchat.value == "")
	{
		alert("Please, enter comment code");
		obj.capchat.focus();
	}
	else
	{
		obj.submit();
	}
}
checkContact = function()
{
	var filter  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
	var obj = window.document.contactForm;
	if(obj.fullname.value == "")
	{
		alert("bạn phải nhập họ tên");
		obj.fullname.focus();
	}
	else if(obj.address.value == "")
	{
		alert("Bạn phải nhập địa chỉ");
		obj.address.focus();
	}
	else if(obj.tel.value == "")
	{
		alert("Bạn phải nhập điện thoại");
		obj.tel.focus();
	}
	else if(obj.email.value == "")
	{
		alert("Bạn phải nhập email");
		obj.email.focus();
	}
	else if (!filter.test(obj.email.value))
	{
		alert("Địa chỉ email không hợp lệ");
		obj.email.select();
	}
	else if(obj.comments.value == "")
	{
		alert("Bạn phải nhập nọi dung liên hệ");
		obj.comments.focus();
	}
	else if(obj.capchat.value == "")
	{
		alert("Bạn phải nhập mã liên hệ");
		obj.capchat.focus();
	}
	else
	{
		obj.submit();
	}
}