var on = false;
var read = "lesen";
 var hide = "verstecken";
 	
function showEntries(nr)
{
	var show = (on) ? "none" : "block";
	var tempRead = (on) ? read : hide;
	document.getElementById(nr).style.display = show;
	document.getElementById("read"+nr).innerHTML = tempRead;
	on = (on) ? false : true;
}