var mm=0;
var ss=0;

function createCookie(name,value,days)
{
	if (days)
	{
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name)
{
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++)
	{
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

function eraseCookie(name)
{
	createCookie(name,"",-1);
}

function ukazMenu(a) {
  if (a==mm) { eraseCookie("m"); mm=0; } else { createCookie("m",a,0); mm=a; }
  b = "splus" + a;
  if (document.getElementById("s"+a).className == "hide") {
    document.getElementById(b).className = "minus";
    document.getElementById("s"+a).className = "show";
  } else {
    document.getElementById(b).className = "plus";
    document.getElementById("s"+a).className = "hide";
  }
}

function ukazSubMenu(a) {
  if (a==ss) { eraseCookie("s"); ss=0; } else { createCookie("s",a,0); ss=a; }
  b = "ssplus" + a;
  if (document.getElementById("ss"+a).className == "shide") {
    document.getElementById(b).className = "sminus";
    document.getElementById("ss"+a).className = "sshow";
  } else {
    document.getElementById(b).className = "splus";
    document.getElementById("ss"+a).className = "shide";
  }
}

function rozbalMenu() {
  if (m=readCookie("m")) ukazMenu(m);
  if (s=readCookie("s")) ukazSubMenu(s);
}