//
// Author: Jungle
// Homepage: http://seodiver.ru/2008/11/no-goback-javascript.html
// Fixed by: Alexf http://alexf.name
//

function createCookie(name, value, days)
{
	if (days)
	{
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name)
{
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0; i < ca.length; i++)
	{
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0)
			return c.substring(nameEQ.length,c.length);
	}
	return null;
}

function ngb()
{
	if (-1 != location.search.indexOf(formUrl))
	{
		var act = document.referrer;
		if (noGoback)
			act = noGoback;
		if ("Microsoft Internet Explorer" == navigator.appName)
		{
			location.href = act;
			return;
		}
		var form = document.createElement('form');
		form.setAttribute('action', act);
		form.method = 'post';
		document.body.appendChild(form);
		form.submit();
	} else if (!noGoback)
	{
		createCookie(cookName, location.href, 1);
		var url = location.href;
		if (-1 == url.indexOf('?'))
			url += '?';
		else
			url += '&';
		url += formUrl;
		location.href = url;
	}
}

var cookName = 'ngb1';
var formUrl = cookName;
var noGoback = readCookie(cookName);

ngb();