function createXMLHTTPRequest()
{
	var XMLHTTP = null;

	if(window.XMLHttpRequest)
	{
		return new XMLHttpRequest();
	}
	else if(window.ActiveXObject)
	{
		try
		{
			return new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch(e)
		{
			try
			{
				return new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch(e)
			{
				return null;
			}
		}
	}
}

function sendComment()
{

	XMLHTTP = new createXMLHTTPRequest();

	var name = document.getElementById("name").value;
	var text = document.getElementById("text").value;

	if(name.trim() == '' || text.trim() == '')
	{
		document.getElementById("name").style.backgroundColor='#FFE0E0';
		document.getElementById("name").style.borderColor='#FF5656';
		document.getElementById("text").style.backgroundColor='#FFE0E0';
		document.getElementById("text").style.borderColor='#FF5656';
		document.getElementById("errorTR").style.display='';
	}
	else
	{
		XMLHTTP.open("POST", "/send.php", true);

		XMLHTTP.onreadystatechange = function()
		{
			if(XMLHTTP.readyState == 4)
			{
				document.getElementById("name").style.backgroundColor='';
				document.getElementById("name").style.borderColor='';
				document.getElementById("text").style.backgroundColor='';
				document.getElementById("text").style.borderColor='';
				document.getElementById("errorTR").style.display='none';

				getComments();
				document.getElementById("name").value='';
				document.getElementById("text").value='';
				document.getElementById('table').style.display='none';
				Effect.toggle('comments','appear');
				Effect.toggle('eintragen','appear');
			}
		};

		XMLHTTP.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
		XMLHTTP.send("name="+encodeURI(name)+"&text="+encodeURI(text));
	}
}

function getComments()
{
	XMLHTTP = new createXMLHTTPRequest();

	XMLHTTP.open("GET", "./comments.php");
	XMLHTTP.onreadystatechange = function()
	{
		if(XMLHTTP.readyState == 4)
		{
			document.getElementById('comments').innerHTML = XMLHTTP.responseText;
		}
	};
	XMLHTTP.send(null);
}