// JavaScript Document

function Newsletter(sForm, sAction, sEmail){
	
	var sUrl = document.forms[sForm].action;
	var oEmail =  document.forms[sForm].elements[sEmail];
	
	var rRegex = /^[a-zA-Z0-9._-]+@([a-zA-Z0-9.-]+\.)+[a-zA-Z0-9.-]{2,4}$/;
	
	if(rRegex.test(oEmail.value)){
		advAJAX.get({
			url: sUrl,
			parameters : {
				'action' : sAction,
				'email' : oEmail.value 
			},
			onSuccess : function(obj) {
				oEmail.value = "";
				alert(obj.responseText); 
			}
		});
	}else{
		if(oEmail.value == ""){
			alert("Podaj adres e-mail.");
		}else{
			alert("Podałeś nieprawidłowy adres e-mail.");	
		}	
	}
}