active = 0;

  sel1 = new Image;
  sel1.src = "images/buttons/menu1.gif";
  sel2 = new Image;
  sel2.src = "images/buttons/menu2.gif";
  sel3 = new Image;
  sel3.src = "images/buttons/menu3.gif";
  sel4 = new Image;
  sel4.src = "images/buttons/menu4.gif";
  
  sel1s = new Image;
  sel1s.src = "images/buttons/menu1a.gif";
  sel2s = new Image;
  sel2s.src = "images/buttons/menu2a.gif";
  sel3s = new Image;
  sel3s.src = "images/buttons/menu3a.gif";
  sel4s = new Image;
  sel4s.src = "images/buttons/menu4a.gif";
  
  sel1p = new Image;
  sel1p.src = "images/buttons/menu1a.gif";
  sel2p = new Image;
  sel2p.src = "images/buttons/menu2a.gif";
  sel3p = new Image;
  sel3p.src = "images/buttons/menu3a.gif";
  sel4p = new Image;
  sel4p.src = "images/buttons/menu4a.gif";
  
  function activateUnSel(a){
	window.status='';
	if (active != a) {
		document['sel' + a].src = eval("sel" + a + ".src");
	} else {
		document['sel' + a].src = eval("sel" + a + "p.src");
 	}
  }

  function activateSel(a) {
	if (active != a){
 		document['sel' + a].src = eval('sel' + a + "s.src");
 	} else {
		document['sel' + a].src = eval('sel' + a + "p.src");
	}
  }

  function activateClick(a) {
	document['sel' + a].src = eval("sel" + a + "p.src");
 	if ((active != a) && (active != 0))
    	document['sel' + active].src = eval("sel" + active + ".src");
	active = a;
  }