/* simple menu */

var ajej = document.all && (navigator.appName.indexOf("Internet Explorer") >= 0) ? 1 : 0;
var necky = navigator.appName.indexOf("Netscape") >= 0 ? 1 : 0;
var visMnu = "";
var actMnu = "";

function flipMenu(actMnu) {
   if (visMnu == "")
      showMenu(actMnu);
   else
   {
      if (visMnu == actMnu)
         hideMenu(actMnu);
      else
      {
         hideMenu(visMnu);
         showMenu(actMnu);
      }
   }
}
function showMenu(menuid) {
	actMnu = document.getElementById(menuid);
  if (actMnu) { 
		if (ajej)
		 {
				actMnu.style.display = "block";
				actMnu.style.color = "#990000";
		 }
		 if (necky)
		 {
				actMnu.style.setProperty("display", "block", "");
				actMnu.style.setProperty("color", "#990000", "");
		 }
		 visMnu = menuid;
		 document.cookie = "visMnu="+menuid;
	}
}
function hideMenu(menuid) {
	actMnu = document.getElementById(menuid);
   if(actMnu)
   {
	   if (ajej)  actMnu.style.display = "none";
	   if (necky) actMnu.style.setProperty("display", "none", "");
	   visMnu = "";
		 deleteCookie('visMnu');
   }
}
function getCookie(name)
{
    var dc = document.cookie;
    var prefix = name + "=";
    var begin = dc.indexOf("; " + prefix);
    if (begin == -1)
    {
        begin = dc.indexOf(prefix);
        if (begin != 0) return null;
    }
    else
    {
        begin += 2;
    }
    var end = document.cookie.indexOf(";", begin);
    if (end == -1)
    {
        end = dc.length;
    }
    return unescape(dc.substring(begin + prefix.length, end));
}
function deleteCookie(name, path, domain)
{
    if (getCookie(name))
    {
        document.cookie = name + "=" + 
            ((path) ? "; path=" + path : "") +
            ((domain) ? "; domain=" + domain : "") +
            "; expires=Thu, 01-Jan-70 00:00:01 GMT";
    }
}

function startMenu() {
	visMnu = getCookie('visMnu');
	if (visMnu != null) {
		//alert(visMnu);
		//showMenu(visMnu); // z nejakyho zahadnyho duvodu nefunguje, proto jsem pouzil nakonec PHPcko
	}
}
startMenu();