var em = document.getElementById("joinEmail")||null;

if(em){
	em.onkeypress = function(e){
		if(!e)e = window.event;
		if(!e)return;
		if(e.keyCode == 13){
			joinEmail1();
		}
	}
}
function joinEmail1(){
	if(!em || !em.value || !isValidEmail(em.value)){
		em.select();
		alert(' invalid email format');
		em.focus();
		return;
	}
	
	if(!ref){
		var ref = new z1BStream("__xxx__");
		ref.onload = function(){
			var w = this.getWindow();
			if(w){
				if(w.isOk){
					alert("Your email is in our Mailing List.");
					em.value="";
				}
				else{
					alert("This email is in our Mailing List already, please type an other email.");
					em.value="";
				}
			}
			this.destroy();
		}
		ref.setURL("addEmailList.php?email="+em.value);
	}
}