browserName=navigator.appName;
browserVer=parseInt(navigator.appVersion);
version="n2";
if (browserName == "Netscape" && browserVer >= 3) version="n3";
if (browserName == "Microsoft Internet Explorer" && browserVer >= 4)
version="n3";

function addImg(url) {
	if (document.images) {
		sendback = new Image();
		sendback.src = url;
		return sendback;
	}
}

function swapImg(imgname,chwhere) {
	if (document.images) {
			eval("document."+imgname+".src = "+imgname+chwhere+".src;");
	}
}

if (version == "n3") {
if (document.images) {
	elsoon = addImg("/pix/m1b.gif");
	elsooff = addImg("/pix/m1.gif");
	masodikon = addImg("/pix/m2b.gif");
	masodikoff = addImg("/pix/m2.gif");
	harmadikon = addImg("/pix/m3b.gif");
	harmadikoff = addImg("/pix/m3.gif");
	negyedikon = addImg("/pix/m4b.gif");
	negyedikoff = addImg("/pix/m4.gif");
}
}