var xmlHttp

function ShowBronnen(str)
{ 
xmlHttp=GetXmlHttpObject();
if (xmlHttp==null)
  {
  alert ("Your browser does not support AJAX!");
  return;
  } 
var url="bronnen.php";
url=url+"?id="+str;
url=url+"&sid="+Math.random();
xmlHttp.onreadystatechange=stateChanged;
xmlHttp.open("GET",url,true);
xmlHttp.send(null);
}

function stateChanged() 
{ 
if (xmlHttp.readyState==4)
{ 
	if (document.getElementById("link").innerHTML=="Bronnen >")
	{
		document.getElementById("bronnen").innerHTML="";
		document.getElementById("link").innerHTML="Bronnen ˆ";
	}
	else
	{
		document.getElementById("bronnen").innerHTML="<br>"+xmlHttp.responseText;
		document.getElementById("link").innerHTML="Bronnen &gt;";
	}
}
}

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;
}