var init = false;
var lock = false;
var c_layer = 'info_';
var n_layer = '';
var c_button = '';
var url = document.URL;
var page = getPageName(url);

function start() {	
    if (init) return false;
    $(document).ready(function() {
        if (page != '') {
            c_button = page;
            c_layer = page;
        } else {
            c_button = 'info';
            c_layer = 'info';
			c_page = 'info';
        }
        setButton(c_button);
        $('#' + c_layer + '_').fadeIn("fast");

    });
    init = true;
}

function switchLayerTo(new_layer) {
    if (new_layer == c_layer) return false;
    n_layer = new_layer;
    $('#' + c_layer + '_').fadeOut('fast', showNewLayer);
}

function showNewLayer() {
    c_layer = n_layer;
    n_layer = '';
    $('#' + c_layer + '_').fadeIn('fast');
}

function setButton(button) {
    $('a#button_' + c_button).removeClass('active');
    c_button = button;
    $('a#button_' + c_button).addClass('active');
}

function setBaseUrl(url) {
    base_url = url;
}

function getPageName(url) {
    var parse_url = url;
    var cs = parse_url.indexOf('#') + 1;
    if (cs) {
        var ce = parse_url.length;
        test = parse_url.substr(cs,ce);
        return parse_url.substr(cs,ce);
    }
    return '';
}