function MM_preloadImages() { //v3.0
	var d = document;
	if(d.images) {
		if(!d.MM_p) {
			d.MM_p=new Array();
		}
	}

	var i, j = d.MM_p.length, a = MM_preloadImages.arguments;
	for (i = 0; i < a.length; i++) {
		if (a[i].indexOf("#") != 0) {
			d.MM_p[j] = new Image; d.MM_p[j++].src = a[i];
		}
	}
}

var isNav, isIE;

if (parseInt(navigator.appVersion.charAt(0)) >= 4) {
	isNav = (navigator.appName == "Netscape") ? 1 : 0;
	isIE = (navigator.appName.indexOf("Microsoft") != -1) ? 1 : 0;
}

function arcticOver() { document.arctic.src = "images/arctic.on.jpg"; }
function arcticOut() { document.arctic.src = "images/arctic.off.jpg"; }

function jumperOver() { document.jumper.src = "images/jumper.on.jpg"; }
function jumperOut() { document.jumper.src = "images/jumper.off.jpg"; }

function pilotOver() { document.pilot.src = "images/pilot.on.jpg"; }
function pilotOut() { document.pilot.src = "images/pilot.off.jpg"; }

function nightOver() { document.night.src = "images/night.on.jpg"; }
function nightOut() { document.night.src = "images/night.off.jpg"; }