function verify(f)
{
	var valid = /^([_a-z0-9-]+)(\.[_a-z0-9-]+)*@([a-z0-9-]+)(\.[a-z0-9-]+)*(\.[a-z]{2,4})$/;
	if (document.Petition.first_name.value == "")
	{
		alert("Please enter your first name");
		return false;
	}
	else if (document.Petition.last_name.value == "")
	{
		alert("Please enter your last name");
		return false;
	} else if (document.Petition.email.value == "")
	{
		alert("Please enter your email address");
		return false;
	}
	else if (!valid.test(document.Petition.email.value))
	{
		alert("Invalid email address");
		return false;
	}
	else if (document.Petition.country.value == "")
	{
		alert("Please enter your country");
		return false;
	}
	else
		return true;



}