function createCookie(name,value) 
{
	var date = new Date();
	date.setTime(date.getTime()+(60*60*1000));
	var expires = "; expires="+date.toGMTString();

	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 eraseCookie(name) {
	createCookie(name,"",-1);
}

function spr(a,b)
{
	a = a.replace(/http:\/\//i,"");
	b = b.replace(/http:\/\//i,"");
	var l = (a.length>b.length)?b.length:a.length;
	
	if(a == "" || b == "")
		return false;
	for(i=0;i<l;i++)
	{
		
		if(a[i] == '/' || b[i] == '/')
			return true;
		if(a[i] != b[i])
			return false;
		
	}
	return true;
}
function TarpikInit()
{
	var t = document.referrer.toString();
	var c = window.location.toString();
	var ts = /^http:\/\/(www.)?tatry\.pl\/.*$/i;


	var w2 = ts.test(t);
	var aspr = spr(t,c);	
	//var w = new RegExp(,"i");

	if(w2)
	{
		createCookie("TarpikBack",t);
	}
	if(!aspr)
	{
		 eraseCookie("TarpikHeadfer"); 
       var tarpikIframe = document.getElementById("tarpikIframe");
		tarpikIframe.style.height = '0px';
		tarpikIframe.style.display="none";
	}

	var fromT = parseInt(readCookie("TarpikHeadfer"));
	
	
	var w1 = (fromT==1);
	var w3 =  (w1 && aspr);

	if(w2 || w3)
	{
		var adres = readCookie("TarpikBack");	
		var tarpikIframe = document.getElementById("tarpikIframe");
		tarpikIframe.style.display="block";
		tarpikIframe.style.width = '100%';
		tarpikIframe.style.height = '155px';
		tarpikIframe.src="http://www.tatry.pl/header.php";

		createCookie("TarpikHeadfer","1");

	}
	else
	{
		 eraseCookie("TarpikHeadfer"); 
       var tarpikIframe = document.getElementById("tarpikIframe");
		tarpikIframe.style.height = '0px';
		tarpikIframe.style.display="none";
		//tarpikIframe.src="http://www.mati.com.pl/tarpik_nowy/header.php";
	}
}

TarpikInit();