//<!--
function keszit_cookie(nev,ertek,napok) {
	if (napok) {
		var date = new Date();
		date.setTime(date.getTime()+(napok*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = nev+"="+ertek+";"+expires+"; path=/";
}

function olvas_cookie(nev) {
	var nevEQ = nev + "=";
	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(nevEQ) == 0) return c.substring(nevEQ.length,c.length);
	}
	return null;
}

function torol_cookie(nev) {
	keszit_cookie(nev,"",-1);
}

function ellenoriz_cookie(nev,id) {
	var x = olvas_cookie(nev)
	if (x) {
		if(x=='I') { mutat(id,nev); }
		if(x=='N') { elrejt(id,nev); }
	}
	if(!x) keszit_cookie(nev,'I',7);
}

function elrejt(id,nev) {
	if(id.length < 1) { return; }

	var elem, vis;
	if(document.getElementById)
		elem = document.getElementById(id);
	else if(document.all)
		elem = document.all[id];
	else if(document.layers)
		elem = document.layers[id];
	vis = elem.style;

	vis.display = "none";
	keszit_cookie(nev,'N',7);
}

function mutat(id,nev) {
	if(id.length < 1) { return; }

	var elem, vis;
	if(document.getElementById)
		elem = document.getElementById(id);
	else if(document.all)
		elem = document.all[id];
	else if(document.layers)
		elem = document.layers[id];
	vis = elem.style;

	vis.display = "block";
	keszit_cookie(nev,'I',7);
}
//-->