var version=0;
browserName = navigator.appName;
browserVer = parseInt(navigator.appVersion);
if (browserName == "Netscape" && browserVer >= 3) version = 1;
if (browserName == "Microsoft Internet Explorer" && browserVer >= 4) version = 2;

var bup = new Array();
var bdn = new Array();
var i;

if (version >0) { for(i = 1; i <= 7; i++) {
  bup[i] = new Image(); bup[i].src = "images/menu/" + i + ".jpg";
  bdn[i] = new Image(); bdn[i].src = "images/menu/" + i + "a.jpg"; }
}

function xUp(Nr) {
	window.status = ""; 
	if (Nr>0 && Nr<=7){
    if (version == 1) document.eval("x" + Nr).src = eval("bup[" + Nr + "].src");
    if (version == 2) eval("x" + Nr).src = eval("bup[" + Nr + "].src");
  }
  return true;
}

function xDn(Nr) {
	if (Nr>0 && Nr<=7){
    if (version == 1) document.eval("x" + Nr).src = eval("bdn[" + Nr + "].src");
    if (version == 2) eval("x" + Nr).src = eval("bdn[" + Nr + "].src");
  }
  return true;
}