function createRequestObject() {
	var ro;
	var browser = navigator.appName;
	if(browser == "Microsoft Internet Explorer"){
		ro = new ActiveXObject("Microsoft.XMLHTTP");
	}
	else{
		ro = new XMLHttpRequest();
	}
	return ro;
}

var browser = navigator.appName;
var http = createRequestObject();

if(browser == "Microsoft Internet Explorer"){
	var meth = "POST";
}
else{
	var meth = "GET";
}

function openAntwoord(nr){
	if(document.getElementById('antw_'+nr).style.visibility == "visible"){
		document.getElementById('antw_'+nr).style.visibility = "hidden";
		document.getElementById('antw_'+nr).style.position = "absolute";
	}
	else{
		document.getElementById('antw_'+nr).style.visibility = "visible";
		document.getElementById('antw_'+nr).style.position = "relative";
	}
	
	var antw = document.getElementById('aantal_antw').value;
	
	for(var i = 1; i <= antw; i++){
		if(i != nr){
			document.getElementById('antw_'+i).style.visibility = "hidden";
			document.getElementById('antw_'+i).style.position = "absolute";
		}
	}
}


function setDownload(nr){
	http = createRequestObject();
	var mom = document.getElementById('mom').value;

	//document.getElementById('contentRight').innerHTML = "<div class=\"laden\"><img src='"+mom+"img/laden.gif'></div>";
	http.open(meth,mom+"manip/download.php?nr="+nr,true);
	
	http.setRequestHeader('Content-Type','text/plain');
	http.send(null);
}