var iTimerIDs = new Array();
var menuOver = new Array();

function show(welke){
	menuOver[welke] = true;
	if (iTimerIDs[welke]){
		clearTimeout(iTimerIDs[welke]);
	}
	document.getElementById(welke).style.visibility = "visible"; 
} 

function weg(welke){ 
	menuOver[welke] = false;
	if (iTimerIDs[welke]){
		clearTimeout(iTimerIDs[welke]);
	}
	iTimerIDs[welke] = setTimeout("echt_weg('" + welke + "')",300);
} 

function echt_weg(welke){
	if (menuOver[welke] == false){
	document.getElementById(welke).style.visibility = "hidden"; 
	}
	if (iTimerIDs[welke]){
		clearTimeout(iTimerIDs[welke]);
	}
}

function show_old(welke){
	document.getElementById(welke).style.visibility = "visible"; 
}

function weg_old(welke){ 
	document.getElementById(welke).style.visibility = "hidden";
} 

function change_img(welke,imgsrc){
	document.getElementById(welke).src = imgsrc;
}