browser = (((navigator.appName == "Netscape") && (parseInt(navigator.appVersion) >= 3 )) || ((navigator.appName == "Microsoft Internet Explorer") && (parseInt(navigator.appVersion) >= 4 )))
	{
	<!--- home --->
	if (browser) {
		hom_on = new Image();
		hom_on.src = "img/gora/3a.gif";
		hom_off = new Image();
		hom_off.src = "img/gora/3.gif";
	}
	<!--- firma --->
	if (browser) {
		fir_on = new Image();
		fir_on.src = "img/gora/4a.gif";
		fir_off = new Image();
		fir_off.src = "img/gora/4.gif";
	}
	<!--- regulamin --->
	if (browser) {
		reg_on = new Image();
		reg_on.src = "img/gora/5a.gif";
		reg_off = new Image();
		reg_off.src = "img/gora/5.gif";
	}	
	<!--- kontakt --->
	if (browser) {
		kon_on = new Image();
		kon_on.src = "img/gora/6a.gif";
		kon_off = new Image();
		kon_off.src = "img/gora/6.gif";
	}


}

function change(rys, naco) {
	if (browser) rys.src = naco.src;
	return true;
}