// openajax begint hier
var http_request = false;
function makePOSTRequest(url, parameters, pass) 
{
  	http_request = false;
    if (window.XMLHttpRequest) 
	{ 
		// Mozilla, Safari,...
        http_request = new XMLHttpRequest();
        if (http_request.overrideMimeType) 
		{
         	// set type accordingly to anticipated content type
            //http_request.overrideMimeType('text/xml');
           	http_request.overrideMimeType('text/html');
        }
    } 
	else if (window.ActiveXObject) 
	{ 
	 	// IE
        try 
		{
        	http_request = new ActiveXObject("Msxml2.XMLHTTP");
        } 
		catch (e) 
		{
            try 
			{
               http_request = new ActiveXObject("Microsoft.XMLHTTP");
            } 
			catch (e) 
			{
			}
     	}
	}
    if (!http_request) 
	{
         alert('Cannot create XMLHTTP instance');
         return false;
    }
    http_request.onreadystatechange = alertContents;
    http_request.open('POST', url, true);
    http_request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
    http_request.setRequestHeader("Content-length", parameters.length);
    http_request.setRequestHeader("Connection", "close");
    http_request.send(parameters);
	function alertContents() 
	{
		var welk = pass; 
  		if (http_request.readyState == 4) 
		{
     		if (http_request.status == 200) 
			{
     	       //alert(http_request.responseText);
     	       result = http_request.responseText;
     	       document.getElementById(welk).innerHTML = result;
			   if (pass == "keuze")
			   {
				   document.getElementById("result").innerHTML = "";
			   }
			} 
			else 
			{
      	      alert('There was a problem with the request.');
      	  }
 		}
	}
}

function ajax(a,b,c) 
{
  	var poststr = a+"=" + encodeURI( b ); 
	poststr = poststr +"&random="+Math.random();
    makePOSTRequest('/ajax.php', poststr, c);
}
function gewichtajax(a,b,c,d,e) 
{
  	var poststr = a+"=" + encodeURI( b ); 
	poststr = poststr +"&dezeid=" + encodeURI( d );
	poststr = poststr +"&dezegroep=" + encodeURI( e );
	poststr = poststr +"&random="+Math.random();
    makePOSTRequest('/ajax.php', poststr, c);
}