function hideElement (elementId) {
	var element;
	if (document.all)
		element = document.all[elementId];
	else if (document.getElementById)
		element = document.getElementById(elementId);
	if (element && element.style)
		element.style.display = 'none';
}
function showElement (elementId) {
	var element;
	if (document.all)
		element = document.all[elementId];
	else if (document.getElementById)
		element = document.getElementById(elementId);
	if (element && element.style)
		element.style.display = '';
}

function update_topbar(tb_status) {
	new Ajax.Request("ajax/top_bar.php",
             {
               method: "post",
               parameters: { visible: tb_status }
        	 });
}

function update_teenused(maakond_id, selected_i) {
	var select = $('teenus');
	select.options.length = 0;
	select.disabled = true;
	select.options[0] = new Option('Uuendan teenuseid...', 0);
	new Ajax.Request("ajax/teenused.php", {
		method: "post",
		parameters: { maakond: maakond_id },
		onSuccess: function (transport, json) {
			if (json != '') {
				select.options.length = 0;
				select.options[0] = new Option('', 0);
				var i = 1;
				for (var key in json) {
					select.options[i] = new Option(json[key], key);
					if (selected_i == key) select.options[i].selected = true;
					i++;
				}
				select.disabled = false;
			} else {
				select.options.length = 0;
                                select.options[0] = new Option('Puuduvad', 0);
			}
		}
	});
}