bName = navigator.appName;
		bVer = parseInt(navigator.appVersion);
		ismeri = false;

		if (bName == "Netscape" && bVer >= 3) 
			ismeri = true;
		else if (bName == "Microsoft Internet Explorer" && bVer >= 4) 
			ismeri = true;
			
		function ChangeSrc(item, which)
		{
			if(ismeri)
				{
					str = "images/gallery/" + item + "_" + which + ".jpg";
					document[item].src = str;
				}
		}