/*
 * Copyright (c) 2000-2010 ANTEE s.r.o., All rights reserved. Confidential.
 */
var spinner = {
	object: null,
	message: null
};
function showSpinner(message) {
	if (!spinner.object || spinner.message != message) {
		if (spinner.object) {
			spinner.object.remove();
			spinner.object = null;
		}
		var s = $('<div></div>');
		s.append($('<div></div>').css({
			position: 'fixed',
			top: 0,
			left: 0,
			width: '100%',
			height: '100%',
			'background-color': 'black',
			opacity: 0.5,
			'z-index': 500000
		}));
		var content = $('<div class="modal-spinner"></div>');
		if (message) {
			content.append($('<span></span>').text(message));
		} else {
			content.addClass("no-message");
		}
		s.append(content);
		s.appendTo('body');
		spinner.object = s;
	}
	spinner.object.show();
}
function hideSpinner() {
	spinner.object.hide();
}