function validEmail(d){
	if (d.value == "") {
	  alert("Please enter your E-Mail address.")
	  d.focus()
	  return false
	}
	var EmailRegExp = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9])+$/;
	if (!EmailRegExp.test(d.value)) {
	  window.alert("Your e-mail address is wrong. Please re-enter correct  email address.");
	  d.focus();
	  return false;
	}
	return true;
}


function v() {
	if (document.f.Email.value == "") {
	  window.alert("Please enter your email address");
	  document.f.Email.focus(); return false; }	
	if (!validEmail(document.f.Email)) 
	  return false; 
	return true;
}