// JavaScript Document

function reset_div()
{
	document.getElementById('h2_bg_2').style.textAlign = "left";
	document.getElementById('h2_bg').style.verticalAligen = "top";
}
function print_results()
{
	if(http_request.readyState == 4)
	{
		if(http_request.status == 200)
		{
			if(http_request.responseText == "")
			{
				reset_div();
				document.getElementById('h2_bg_2').innerHTML = "Konnte keine Ergebnisse empfangen.";
			}
			else
			{
				reset_div();
				document.getElementById('h2_bg_2').innerHTML = http_request.responseText;
			}
		}
		else
		{
			reset_div();
			document.getElementById('h2_bg_2').innerHTML = "Konnte die Abfrage nicht ausführen.";
		}
	}
}

function change_content(url)
{
	document.getElementById('h2_bg_2').style.textAlign = "center";
	document.getElementById('h2_bg_2').innerHTML = '<br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><img src="img/loader.gif" alt=""/>'
	
	http_request = false;
	
	if(window.XMLHttpRequest)
	{
		http_request = new XMLHttpRequest();
		if(http_request.overrideMimeType)
		{
			http_request.overrideMimeType('text/xml');
		}
	}
	else if(window.ActiveXObject)
	{
		try
		{
			http_request = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch(e)
		{
			try
			{
				http_request = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch(e) {}
		}
	}

	if(!http_request)
	{
		alert('Ende :( Kann keine XMLHTTP-Instanz erzeugen');
		return false;
	}

	http_request.onreadystatechange = print_results;
	http_request.open('GET', url, true);
	http_request.send(null);
}