browserName = navigator.appName;

browserVer = parseInt(navigator.appVersion);



if ( (browserName == "Netscape" && browserVer >= 3) || (browserName== "Microsoft Internet Explorer" && browserVer > 3) ) version = "n3";

	else version = "n2";

	if (version == "n3") {

	
	n_pron = new Image();
	n_pron.src = "images/n_pron.gif";

	n_proff = new Image();
	n_proff.src = "images/n_proff.gif";
	
	
	n_patienton = new Image();
	n_patienton.src = "images/n_patienton.gif";        

	n_patientoff = new Image();
	n_patientoff.src = "images/n_patientoff.gif"; 	

	n_parton = new Image();
	n_parton.src = "images/n_parton.gif";

	n_partoff = new Image();
	n_partoff.src = "images/n_partoff.gif";
	

	
	
}





function img_act(imgName) {

        if (version == "n3") {

        imgOn = eval(imgName + "on.src");

        document [imgName].src = imgOn;

        }

}



function img_inact(imgName) {

        if (version == "n3") {

        imgOff = eval(imgName + "off.src");

        document [imgName].src = imgOff;

        }

}