var openmenu = '';

function hide (id) {
	var obj = document.getElementById(id);
	obj.style.display = 'none';
}

function show (id) {
	var obj = document.getElementById(id);
	obj.style.display = 'block';
}

function setOpenMenu( id ) {
	openmenu = id;
}

function showMenu(id) {
	if ( openmenu != '' ) {
		hide( openmenu );
		if ( openmenu != id ) {
			show( id );
			openmenu = id;
		} else {
			openmenu = '';
		}
	} else {
		show( id );
		openmenu = id;
	}
}

function change_image( id, src ){
	var obj = document.getElementById(id);
	if ( obj ) {
		obj.src = src;
	}
}

function galerija( id, src, innertext ){
	var obj = document.getElementById(id);
	var obj2 = document.getElementById('paveiksliukastext');
	if ( obj ) {
		obj.src = src;
		obj2.innerHTML = innertext;
	}
}

function galerija2( id, src, innertitle, innertext ){
	var obj = document.getElementById(id);
	var obj2 = document.getElementById('paveiksliukastitle');
	var obj3 = document.getElementById('paveiksliukastext');
	if ( obj ) {
		obj.src = src;
		obj2.innerHTML = innertitle;
		obj3.innerHTML = innertext;
	}
}

function toggleAnswer( answer_id ) {
	var answer_ref = document.getElementById( answer_id );
	if( answer_ref ) {
		if( ( answer_ref.style.display == 'none' ) ) {
			answer_ref.style.display = 'block';
		} else {
			answer_ref.style.display = 'none';
		}
	}
}

function getDataFromCookie( cookieName ){
	labelName = cookieName;
	var labelLen = labelName.length;
	var cookieData = document.cookie;
	var cLen = cookieData.length;
	var i = 0;
	var cEnd;
	var selected_value = '';
	while (i < cLen) {
		var j = i + labelLen;
		if (cookieData.substring(i,j) == labelName) {
			cEnd = cookieData.indexOf(';',j);

		if (cEnd == -1) {
			cEnd = cookieData.length;
		}

		selected_value =  unescape(cookieData.substring(j+1, cEnd));
		}
		i++;
	}

	return selected_value;

}

function setDataToCookie( cookieName, value ){
	document.cookie = cookieName + "=" + value + "; path=/;";
}

function closePopup( id ) {
	
	document.getElementById( id ).style.display = 'none';
	setDataToCookie( 'closePopup', 1 );
	
}

function checkPopup( id ) {
	
	var cookie = getDataFromCookie( 'closePopup' );
	
	if ( cookie == 1 ) {
		document.getElementById( id ).style.display = 'none';
	}
	
}