var XMLHttpRequestObject = false;
try
{
	//Firefox, Opera, Safari, IE7
	XMLHttpRequestObject = new XMLHttpRequest();
}
catch(e)
{
	try
	{
		//IE5
		XMLHttpRequestObject = new ActiveXObject("Msxml2.XMLHTTP");
	}
	catch(e)
	{
		try
		{
			//IE6
			XMLHttpRequestObject = new ActiveXObject("Microsoft.XMLHTTP");
		}
		catch(e)
		{
			alert("Je browser ondersteunt geen AJAX!");
		}
	}
}

function getData(url)
{
	if(XMLHttpRequestObject)
	{
		XMLHttpRequestObject.open("GET", url);
		XMLHttpRequestObject.onreadystatechange = function()
		{
			if(XMLHttpRequestObject.readyState == 4 && XMLHttpRequestObject.status == 200)
				document.getElementById("contentajax").innerHTML = XMLHttpRequestObject.responseText;
			
		}
		XMLHttpRequestObject.send(null);
	}
}