var nws=new Newsletter();

function Newsletter()
{
	this.zmien=function(t)
	{
		obj=$('nwstxt');
		bld="";
		if(obj.value=="") bld+="Enter your e-mail address!";
		if(bld!="") 
		{
			alert(bld);
			return;
		}
		
		Ajax("ajax/newsletter.php",
			 "t="+t+"&ema="+obj.value,
			 "",
			 "nws.test_zmien(wynik);");
	}
	this.test_zmien=function(wynik)
	{
		switch(wynik)
		{
			case "0": alert("Your e-mail address has been added to the newsletter list."); $('nwstxt').value=''; break;
			case "1": alert("Your e-mail address already exist."); break;
			case "2": alert("Your e-mail address has been removed from the newsletter list."); $('nwstxt').value=''; break;
			case "3": alert("There isn't this e-mail"); break;
		}
	}
}