jsc = 0;

// ***** inicializacia prepinacich tlacidiel v menu ****
function init() {
	var browserName = navigator.appName;
	var browserVer  = navigator.appVersion;

	// JavaScript compatibility
	if (browserName.substring(0, 8)=="Netscape") {
		var version = parseInt(browserVer.substring(0, 1));
		if (version >= 4) {
			load();
			jsc = 1;
		}
	}

	if (browserName.substring(0, 9)=="Microsoft") {
		var version = parseInt(browserVer.substring(21, 23));
		if (version >= 4) {
			load();
			jsc = 1;
		}
	}
}

// ***** nahranie potrebnych suborov - obrazkov *****
function load() {
	// navi-out
	navi_out = new Array();
	navi_out[0] = new Image();
	navi_out[0].src = 'pics/menu/01a.gif';
	navi_out[1] = new Image();
	navi_out[1].src = 'pics/menu/02a.gif';
	navi_out[2] = new Image();
	navi_out[2].src = 'pics/menu/03a.gif';
	navi_out[3] = new Image();
	navi_out[3].src = 'pics/menu/04a.gif';

	// navi-in
	navi_in = new Array();
	navi_in[0] = new Image();
	navi_in[0].src = 'pics/menu/01b.gif';
	navi_in[1] = new Image();
	navi_in[1].src = 'pics/menu/02b.gif';
	navi_in[2] = new Image();
	navi_in[2].src = 'pics/menu/03b.gif';
	navi_in[3] = new Image();
	navi_in[3].src = 'pics/menu/04b.gif';
	
	separator_off = new Image();
	separator_off.src = 'pics/menu/separator_off.gif';
	separator_left = new Image();
	separator_left.src = 'pics/menu/separator_left.gif';
	separator_right = new Image();
	separator_right.src = 'pics/menu/separator_right.gif';
	
}

// ***** prepnutie pri prichode mysi ***
function mouseIn(item, image, sep_left, sep_right) {
	if (jsc) {
		document.images[image].src = navi_in[item].src;
		document.images[sep_left].src = separator_left.src;
		document.images[sep_right].src = separator_right.src;
	}
}

// ***** prepnutie odchode prichode mysi ****
function mouseOut(item, image, sep_left, sep_right) {
	if (jsc) {
		document.images[image].src = navi_out[item].src;
		document.images[sep_left].src = separator_off.src;
		document.images[sep_right].src = separator_off.src;
	}
}