function openWin(theURL,winName,features) 
{
  window.open(theURL,winName,features);
}


function validateEmail(){
	var email = document.getElementById('emailinput');
	var regex = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
	if (!regex.test(email.value)) 
	{
		alert('The email address you entered is not valid');
		email.focus;
		return false;
	}
	else
	return true;
 }