var xmlHttp

function show_pelajaran_dok(dok)
{
	if (dok.length==0)
	{
	document.getElementById("dok_topik").innerHTML="";
	return;
	}
	xmlHttp=GetXmlHttpObject()
	if (xmlHttp==null)
	{
	alert ("Your browser does not support AJAX!");
	return;
	}
	var url="select_dok.php";
	url=url+"?dok="+dok;
	url=url+"&sid="+Math.random();
	xmlHttp.onreadystatechange=stateChanged;
	xmlHttp.open("GET",url,true);
	xmlHttp.send(null);
}

function stateChanged()
{
if (xmlHttp.readyState==4)
{
document.getElementById("dok_topik").innerHTML=xmlHttp.responseText;
}
}


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)
{
xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
}
}
return xmlHttp;
}