CFader = function(closeable) {
    if (typeof closeable !== 'boolean') {
        closeable = false;
    }
    var self = this;
    var fader = document.createElement('div');
    fader.id = 'g-fader';
    fader.style.height = document.body.clientHeight + 'px';
    if (closeable)
        fader.onclick = function() {
            self.destroy();
        };
    document.body.appendChild(fader);
    this.destroy = function() {
        fader.parentNode.removeChild(fader);
    }
}