$(document).ready(function(){
	GestisciEventi();
});
function GestisciEventi(){
	$("#form1").bind("submit",function(e){
		if(controllaCampi() == true){
			return true;
		}
		else{
			return false;
		}
	});
}
function controllaMail(email){
	var email_reg_exp = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-]{2,})+\.)+([a-zA-Z0-9]{2,})+$/;
 
	if (!email_reg_exp.test(email) || (email == "") || (email == "undefined")) {
		return false;
	}
}
 
function controllaCampi(){
	
	var email = document.form1.email.value;
	
 
	if ((email == "") || (email == "undefined")) {
		alert("Insert your e-mail");
		document.form1.email.value = "";
		document.form1.email.focus();
		return false;
	}
	else if(controllaMail(email) == false){
		alert("Insert a valid e-mail address.");
		document.form1.email.select();
		return false;
	}
 
	return true;
}