// JavaScript Document
function doSubmit(objForm)
{
	var emailReg = "^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}$";
	var regex = new RegExp(emailReg);
	if (!regex.test(objForm.email.value))
	{
		alert("Please enter a valid email.");
		objForm.email.focus();
		return false;
	}
	
	if (!objForm.list_id_chess.checked && !objForm.list_id_thursday.checked)
	{
		alert("Please check at least one type of email to receive.");
		return false;
	}
	
	return true;
}

function add_bookmark()
{
	alert('Please press CTRL+D to Bookmark this page, after clicking OK!');
}