bName = navigator.appName;

bVer = parseInt(navigator.appVersion);

if ((bName == "Netscape" && bVer>= 3) ||
	(bName == "Microsoft Internet Explorer" && bVer >= 4)) {
	br = "n3";
}	// end if
else {
	br = "n2";
}	// end else

function initialize(imgOn, imgOff) {
	if (br == "n3") {
		arrowOn = new Image();
		arrowOn.src = imgOn;
		
		arrowOff = new Image();
		arrowOff.src = imgOff;
	}	// end if
}	// end initialize

function imgArrowOn(imgName) {
	if (br == "n3") {
		document[imgName + "_arrow"].src = arrowOn.src;
	}	// end if
}	// end imgArrowOn

function imgArrowOff(imgName) {
	if (br == "n3") {
		document[imgName + "_arrow"].src = arrowOff.src;
	}	// end if
}	// end imgArrowOff