function displayListe(key) {
var displayBlock = document.getElementById("liste_" + key);
//var displaySpan = document.getElementById("chgtbox_" + key);
var currentDisplay = displayBlock.style.display;
var displayed = (currentDisplay == "block");
var newDisplay;
var newCurrentValueDisplay;
//var newDisplaySpanText;
if (displayed) {
	newDisplay="none";
	//newDisplaySpanText="+";
        newCurrentValueDisplay = "block";
}
else {
	newDisplay="block";
	//newDisplaySpanText="-";
        newCurrentValueDisplay = "none";
}
displayBlock.style.display= newDisplay;
//displaySpan.firstChild.data = newDisplaySpanText;
//document.getElementById("current_" + key).style.display=newCurrentValueDisplay;
}