browser_name = navigator.appName; 
browser_version = parseFloat(navigator.appVersion); 

if (browser_name == "Netscape" && browser_version >= 3.0) { browserVer = 1; } 
else if (browser_name == "Microsoft Internet Explorer" && browser_version >= 3.0)  { browserVer = 1; } 
else { browserVer = 2; } 

 if (browserVer == 1) {

 pic1 = new Image;
 pic1.src = "http://www.narcom.ru/images/left/l0.gif";
 picm1 = new Image;
 picm1.src = "http://www.narcom.ru/images/left/ll0.gif";
 }

 function hiLite(imgDocID,imgObjName) {
 if (browserVer == 1) {
 document.images[imgDocID].src = eval(imgObjName + ".src");}}