bname = navigator.appName;
bversion = parseFloat(navigator.appVersion);

var base_dir = "images/";
var imgs = new Array('arrow.gif');
       for (var i=0; i < imgs.length; i++) {
       var img = new Image();
       img.src = base_dir + imgs[i];
       }
function rollover(name1,img1){
	if (bname == "Netscape") {
		if (bversion < 5) {
			return false;
			}
		}
	if (bname == "Netscape") {
		if (bversion >= 5) {
			document.images[name1].src = base_dir + img1;
			}
		}
		else{
             document.images[name1].src = base_dir + img1;
             }
	}
function rollicon(name1,img1){
	if (bname == "Netscape") {
		if (bversion < 5) {
			return false;
			}
		}
	if (bname == "Netscape") {
		if (bversion >= 5) {
			document.images[name1].src = base_dir + img1;
			}
		}
		else{
             document.images[name1].src = base_dir + img1;
             }
	}