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

        if (version == "n3") {
       		lining_on = new Image();
    	   lining_on.src = "images/t_lining_on.gif";
			belt_splice_on = new Image();
    	   belt_splice_on.src = "images/t_belt_splice_on.gif";
			chemical_resistance_on = new Image();
      	chemical_resistance_on.src = "images/t_chemical_resistance_on.gif";
			manual_on = new Image();
         manual_on.src = "images/t_manual_on.gif";
		   info_on = new Image();
         info_on.src = "images/t_info_on.gif";
			lining_bulletin_on = new Image();
         lining_bulletin_on.src = "images/t_lining_bulletin_on.gif";
			belt_bulletin_on = new Image();
         belt_bulletin_on.src = "images/t_belt_bulletin_on.gif";
		   contact_on = new Image();
         contact_on.src = "images/t_contact_on.gif";
		
		 lining_off = new Image();
       lining_off.src = "images/t_lining_off.gif";		                        
        belt_splice_off = new Image();
       belt_splice_off.src = "images/t_belt_splice_off.gif";
		  chemical_resistance_off = new Image();
        chemical_resistance_off.src = "images/t_chemical_resistance_off.gif";
		  manual_off = new Image();
        manual_off.src = "images/t_manual_off.gif";
		  info_off = new Image();
        info_off.src = "images/t_info_off.gif";
		 lining_bulletin_off = new Image();
       lining_bulletin_off.src = "images/t_lining_bulletin_off.gif";
		  belt_bulletin_off = new Image();
        belt_bulletin_off.src = "images/t_belt_bulletin_off.gif";
	     contact_off = new Image();
        contact_off.src = "images/t_contact_off.gif";
		}

function ON(imgName) {
        if (version == "n3") {
        imgOn = eval(imgName + "on.src");
        document [imgName].src = imgOn;
        }
}
function OFF(imgName) {
        if (version == "n3") {
        imgOff = eval(imgName + "off.src");
        document [imgName].src = imgOff;
        }
}