// Javascript pro vypnutí zvuku recepční a přenastavení cookies a obrázků
function toggleSound() {
	var sound2 = read_cookie('zvuk_recepcni');
	if (sound2 == 1) {
		whichSound(true, -1);
	}
	else if (sound2 == -1) {
		whichSound(true, 1);
	}
}

function whichSound(process, which) {
	if (first || process) {
		var sound;
		if (first) {
			sound = read_cookie('zvuk_recepcni');
			first = false;
			if (sound == null) {
				create_cookie('zvuk_recepcni',-1,180);
				sound = -1;
			}
		}
		else {
			sound = which;
		}
		
		if (sound == 1) {
			document.getElementById('zvukRecepcni').src = 'images/obecne/nosound.gif';
			document.getElementById('zvukRecepcni').title = 'Zapnout zvuk';
			if (document.recepcni)
				document.recepcni.callToggleSound('false');
			create_cookie('zvuk_recepcni',1,180);
		}
		else if (sound == -1) {
			document.getElementById('zvukRecepcni').src = 'images/obecne/sound.gif';
			document.getElementById('zvukRecepcni').title = 'Vypnout zvuk';
			if (document.recepcni)
				document.recepcni.callToggleSound('true');
			create_cookie('zvuk_recepcni',-1,180);
		}	
	}
}