// AJAX INIT
function ajaxinit()
{
	var brs;
	try 
	{
		brs	=	new ActiveXObject("Msxml2.XMLHTTP");
	}
	catch(e)
	{
    	try 
		{
			brs	=	new ActiveXObject("Microsoft.XMLHTTP");
		}
		catch(f) { brs	=	null; }
  	}
	if	((!brs)&&(typeof XMLHttpRequest!="undefined"))
	{
		brs=new XMLHttpRequest();
  	}
	return  brs;
}

function ChangeWard(value, type)
{
	query	=	"chg="+type+"&wardid="+encodeURIComponent(value);
	var http = ajaxinit();
	try
	{
		http.open("POST", "d_action/change_address.php?chg="+type+"&wardid="+encodeURIComponent(value));
		http.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
		http.setRequestHeader("Content-Type", "text/html; charset=utf-8");
		http.setRequestHeader("Cache-control", "no-cache");		
    	http.onreadystatechange = function()
		{
			if (http.readyState == 4)
			{
				if (http.status == 200)
				{
					if (http.responseText != "")
					{
						if(http.responseText != '') {
							document.getElementById('select_'+type).innerHTML = http.responseText;
						}
						else
							alert('Không có dữ liệu');
					}
										
				}
			}
		}
		http.send(query);
	}
	catch (e)
	{
	}
}
function checkavailable(value, who)
{	
	query	=	"uservalue="+encodeURIComponent(value);	
	var	el = document.getElementById('username_check');	
	var http = ajaxinit();
	try
	{
		http.open("POST", "z_action/checkavaible.php?who="+who);
		http.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
		http.setRequestHeader("Cache-control", "no-cache");		
    	http.onreadystatechange = function()
		{
			if (http.readyState == 4)
			{
				if (http.status == 200)
				{
					if (http.responseText == "YES")
					{
						el.style.display = 'block';
						el.innerHTML = "Tên đăng nhập đã tồn tại";
						document.frmReg.txt_username.focus();
					}
					else
					{
						el.style.display = 'none';						
					}
				}
			}
		}
		http.send(query);
	}
	catch (e)
	{
	}
}