var xmlHttp
var defaultcontentarray=new Object()
/*HAM XU LI AJAX*/
function GetXmlHttpObject()
{
var xmlHttp=null;
try
{
  // Firefox, Opera 8.0+, Safari
	xmlHttp=new XMLHttpRequest();
}
catch (e)
{
  // Internet Explorer
	try
	{
    	xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
    }
	catch (e)
    {
		try
		{
    		xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
		}
		catch(e){alert(e)};
    }
}
	return xmlHttp;
}
function stateChanged(id) 
{ 
	if (xmlHttp.readyState==4 && (xmlHttp.status==200 || window.location.href.indexOf("http")==-1))
	{ 
		document.getElementById(id).innerHTML=xmlHttp.responseText;
	}
}
function showHint(url,id)
{
xmlHttp=GetXmlHttpObject();
if (xmlHttp==null)
  {
  	alert ("Your browser does not support AJAX!");
  	return;
  }

/*var url="adminsite.php";
url=url+"?q="+str;*/
//url=url+"?"+Math.random();
document.getElementById(id).innerHTML = "<img src='images/waiting.gif' /> loading... ";
xmlHttp.onreadystatechange=function(){ stateChanged(id); }
xmlHttp.open("GET",url,true);
xmlHttp.send(null);
}

/*END HAM XU LI AJAX*/

function showDiv(myDiv)
{			
	changeVisible(myDiv,"visible");
}
function hideDiv(myDiv)
{
	changeVisible(myDiv,"hidden");
}
function changeColor(myDiv,sColor)
{
	document.getElementById(myDiv).style.backgroundColor = sColor;	
}
function changeTab(id_left,id_middle,id_right)
{
	document.getElementById(id_left).className = "tab_select_left";
	document.getElementById(id_middle).className = "tab_select_middle";
	document.getElementById(id_right).className = "tab_select_right";	
}
function non_changeTab(id_left,id_middle,id_right,soTab)
{
	var i = 0;
	for(i;i<soTab;i++)
	{
		document.getElementById(id_left+i).className = "tab_nonselect_left";
		document.getElementById(id_middle+i).className = "tab_nonselect_middle";
		document.getElementById(id_right+i).className = "tab_nonselect_right";
	}
}
function changeMenu(id_left,id_middle,id_right)
{
	document.getElementById(id_left).className = "Menu_Entry_left_hover";
	document.getElementById(id_middle).className = "Menu_Entry_middle_hover";
	document.getElementById(id_right).className = "Menu_Entry_right_hover";
}
function non_changeMenu(id_left,id_middle,id_right)
{
	document.getElementById(id_left).className = "Menu_Entry_left";
	document.getElementById(id_middle).className = "Menu_Entry_middle";
	document.getElementById(id_right).className = "Menu_Entry_right";
}
function changeClassName(divName, className)
{
	document.getElementById(divName).className = className;
}
function changeVisible(myDiv, attrib)
{
	document.getElementById(myDiv).style.visibility = attrib;
}
function showHide_ND(a)
{
	var e = document.getElementById(a);
	if(!e) return true;
	if(e.style.display == "block")
	{
		e.style.display = "none";
	}
	else
	{
		e.style.display = "block";
	}
	return true;
}
function changeButton(id_left,id_middle,id_right)
{
	document.getElementById(id_left).className 		= "tab_select_left";
	document.getElementById(id_middle).className 	= "tab_select_middle";
	document.getElementById(id_right).className 	= "tab_select_right";
}
function non_changeButton(id_left,id_middle,id_right)
{
	document.getElementById(id_left).className 		= "tab_nonselect_left";
	document.getElementById(id_middle).className 	= "tab_nonselect_middle";
	document.getElementById(id_right).className 	= "tab_nonselect_right";
}
function thongbao()
{
	alert("Dang cap nhap...");
}