var current;
var firstTime = true;
var changed = false;
var currentDisplay;

function change(x, y, toDisplay){
	if (changed){
		window.clearTimeout(timerIDChange);	
		timerIDChange = -1;
		if (currentDisplayString != toDisplay)
			document.getElementById(currentDisplayString).style.visibility = "hidden";
		else return;
	}
	document.getElementById(toDisplay).style.visibility = "visible";
	document.getElementById(toDisplay).style.top = y;
	document.getElementById(toDisplay).style.left = x;
	currentDisplayString = toDisplay;
	changed = true;
}
	
var timerIDChange = -1;	
function changeback(){
	if (changed)
		timerIDChange = setTimeout("bobo()",140);
}
function bobo(){
	if (changed){
		elem = document.getElementById(currentDisplayString);
		elem.style.visibility = "hidden";
		changed = false;
		timerIDChange = -1;	
	}
}

function stopChange(){
	if (timerIDChange != -1){
		window.clearTimeout(timerIDChange);
		timerIDChange = -1;
	}
}