var path = "pic/";

if (document.images) {
  novinky1= new Image ();
  novinky1.src= "pic/bt_novinky1.gif";

  ospolecnosti1= new Image ();
  ospolecnosti1.src= "pic/bt_ospolecnosti1.gif";

  produkty1= new Image ();
  produkty1.src= "pic/bt_produkty1.gif";

  kariera1= new Image ();
  kariera1.src= "pic/bt_kariera1.gif";

  infocentrum1= new Image ();
  infocentrum1.src= "pic/bt_infocentrum1.gif";

  kontakty1= new Image ();
  kontakty1.src= "pic/bt_kontakty1.gif";

}

function PushOn(image_name) {
  if (document.images) {
  document.images[image_name].src = path+"bt_"+image_name+"1.gif";
 }
}
function PushOff(image_name) {
  if (document.images) {
  document.images[image_name].src = path+"bt_"+image_name+".gif";
 }
}

NS4 = (document.layers) ? 1 : 0;
DOM = (document.getElementById) ? 1 : 0;
ie5  = (document.all && document.getElementById);
ns6 = (!document.all && document.getElementById);

var loaded = 0;
var lastbutton='top';

function fadeIn(menuName) {
	if(opac != 100){
		opac+=10;
		if(ie5) document.getElementById(menuName).filters.alpha.opacity = opac;
		if(ns6) document.getElementById(menuName).style.MozOpacity = opac/100;
		aaa = menuName;
		setTimeout("fadeIn(aaa)", 30);
	}
}

function popUp(menuName,on) {
		if (on) {
			if (NS4) {
				document.layers[menuName].visibility = "show";
			} else if (DOM) {
				document.getElementById(menuName).style.visibility = "visible";
				if(ie5) document.getElementById(menuName).filters.alpha.opacity = 0;
				if(ns6) document.getElementById(menuName).style.MozOpacity = 0;
					opac = 0;
        	fadeIn(menuName);
                        } else {
					document.all[menuName].style.visibility = "visible";
			}
		} else {
			if (NS4) {
				document.layers[menuName].visibility = "hide";
			} else if (DOM) {
				if(ie5) document.getElementById(menuName).filters.alpha.opacity = 0;
				if(ns6) document.getElementById(menuName).style.MozOpacity = 0;
				document.getElementById(menuName).style.visibility = "hidden";
			} else {
				document.all[menuName].style.visibility = "hidden";
			}
		}
}
function zhasni() {
		popUp('m_ospolecnosti', false);
		popUp('m_produkty', false);
		popUp('m_infocentrum', false);
		popUp('m_kontakty', false);
		zhasni1();
		zhasni2();
}
function zhasni1() {
		popUp('m_spotrebitelske', false);
}
function zhasni2() {
		popUp('m_cr', false);
		popUp('m_sr', false);
}
function zhasni_port() {
		popUp('port_kofola', false);
		popUp('port_rajec', false);
		popUp('port_jupi', false);
		popUp('port_jupik', false);
		popUp('port_rc', false);
		popUp('port_tt', false);
		popUp('port_chito', false);
		popUp('port_caprisone', false);
		popUp('port_nescafe', false);
		popUp('port_mamidrink', false);
}
function nahled(obrazek) {
	prewiev2 = window.open('../pic/obrazek.asp?obrazek='+obrazek,'nahledy','toolbar=no,status=no,scrollbars=no,location=no,menubar=no,directories=no,width=200,height=100,left=10,top=10');
	prewiev2.window.focus();
}