var xmlHttp;
var txtDay;
var vDate;
var dem;
function refresh()
{ 
	 var tempDate = new Date();
	 var txtThu =""; 
	 var txtGio =""; 
	 var txtPhut =""; 
	 dem = 0;
	 txtDay =""; 
	 vDate = "";
	 tempDay = ["CN","Thu hai","Thu ba","Thu tu","Thu nam","Thu sau","Thu bay"];
	 txtThu  = tempDay[tempDate.getDay()]; 
	 txtGio = tempDate.getHours();
	 txtPhut = tempDate.getMinutes();
	 txtDay = (tempDate.getMonth()+ 1) +"/" + tempDate.getDate() +"/" + tempDate.getFullYear();
	 vDate = tempDate.getDate() +"/" + (tempDate.getMonth()+ 1) +"/" + tempDate.getFullYear();
	if (txtThu == "Thu nam")
	{
		if(txtGio < 17) 
		{
  			showKetQua("",1);
		}
		else
		{
			if (txtGio == 17)
			{
				if(txtPhut <10)
				{		
					showKetQua(vDate,0);
				}
				else
				{
					if (txtPhut <= 35)
					{
							dem = 1;
							showKetQua(txtDay,dem);
							var t = setTimeout("refresh()",30000);
					}
					else
					{
						dem = 1;
						showKetQua(txtDay,dem);
					}
				}
			}
			else
			{
				dem = 1;
				showKetQua(txtDay,dem);
			}
		}
		if (dem == 0)	
			var t= setTimeout("refresh()",60000);
  	}
  	else
  		showKetQua("",1);
}
function showKetQua(str,tmp)
{ 
	xmlHttp=GetXmlHttpObject();
	if (xmlHttp==null)
	 {
	 alert ("Browser does not support HTTP Request");
	 return;
	 }
	if (tmp == 0)
	{
 		var url="dangquayso.asp";
		url=url+"?n="+str;
		xmlHttp.onreadystatechange=stateChanged;
		xmlHttp.open("GET",url,true);
		xmlHttp.send(null);
  	}
  	else
  	{
		var url="getkqxs.asp";
 		url = url + "?n=" + str + "&timestamp=" + Math.random();
		xmlHttp.onreadystatechange=stateChanged;
		xmlHttp.open("GET",url,true);
		xmlHttp.send(null);
	}
}
function stateChanged() 
{ 
if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
	//if ( xmlHttp.readyState=="complete")
 	//{ 
 		//alert ("khong dien duoc du lieu?");
 		document.getElementById("txtHint").innerHTML=xmlHttp.responseText;
 	//} 
}
function GetXmlHttpObject()
{
var xmlHttp=null;
try
 {
 // Firefox, Opera 8.0+, Safari
  xmlHttp=new XMLHttpRequest();
 }
 catch(e) 
 {
	try {
			xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
		} 
	catch(e) 
		{
			try {
					xmlHttp = new ActiveXObject("MSXML2.XMLHTTP.3.0");
				} 
			catch(e) 
			{
				try {
						xmlHttp = new ActiveXObject("MSXML2.XMLHTTP");
					} 
				catch(e) { xmlHttp = null; } 
			}
		}
  }
  return xmlHttp;
}