browserName = navigator.appName;
browserVer = parseInt(navigator.appVersion);
version = "n2";
<!-- document.write("Browser=" + browserName);
if (browserName == "Netscape" && browserVer >= 3)
    version = "n3";
if (browserName == "Microsoft Internet Explorer" && browserVer >= 4)
    version = "n3";
<!-- if (browserVer > 0) { window.status="cpshom:" + browserName+" "+browserVer+" "+version } ; -->

 if (version == "n3") {
	home_1 = new Image(160, 30);
	home_1.src = "images/homeopen.gif";
	home_0 = new 	Image(160, 30);
	home_0.src = "images/homeclos.gif"; }
 function imgchg(imgst,imgName) { if(version == "n3")
	 { imgc = eval(imgName + "_" + imgst + ".src");
	 document [imgName].src = imgc; }
 }