var nr = 0;
var oldnr = 0;
var maxbuttons = 10;

var nav = new Array(maxbuttons);
var navOver = new Array(maxbuttons);
var navClicked = new Array(maxbuttons);
var navClickedOver = new Array(maxbuttons);
var navVisited = new Array();

for (i=0; i < maxbuttons; i++) {
  nav[i] = new Image(); 
  nav[i].src = "files/images/navi/navi_0"+i+".gif";
  
  navOver[i] = new Image(); 
  navOver[i].src = "files/images/navi/navi_aktiv_0"+i+".gif";
  
  navClicked[i] = new Image(); 
  navClicked[i].src = "files/images/navi/navi_aktiv_0"+i+".gif";
  
  navClickedOver[i] = new Image(); 
  navClickedOver[i].src = "files/images/navi/navi_aktiv_0"+i+".gif";
  
  navVisited[i] = new Image(); 
  navVisited[i].src = "files/images/navi/navi_0"+i+".gif";
}

function rollover(nr) 
{ 
	document['button'+nr].src = navOver[nr].src;
}

function rollout(nr) 
{ 
	document['button'+nr].src = nav[nr].src;
}

/*function rollover(nr) 
{ 
	if (nr!=oldnr) {
		document['button'+nr].src = navOver[nr].src;
	}
	else {
		document['button'+nr].src = navClickedOver[nr].src;
	}
}

function rollout(nr) 
{ 
	if (nr!=oldnr) {
		document['button'+nr].src = nav[nr].src;
	}
	else {
		document['button'+nr].src = navClicked[nr].src;
	}
}*/

/*
function clickvisitb(nr) {
	nav[oldnr].src = navVisited[oldnr].src;
	document['button'+oldnr].src = nav[oldnr].src;
	document['button'+nr].src = navClickedOver[nr].src;
	oldnr = nr;	
}*/

/*function clickbutt(nr) {
  	document['button'+oldnr].src = nav[oldnr].src;
  	document['button'+nr].src = navClickedOver[nr].src;
	oldnr = nr;
}*/