// JavaScript Document
// form Validator
function OnSubmit()
{
	with(document.ccoptin)
	{
		if (!isValidEmail(ea.value))
		{
	     	window.alert("Please enter a valid email address.");
     		ea.focus();
     		return false;
	    }
		submit();
	}
}

function isValidEmail(Email)
{
	if (Email.length<4)
		return false;
	else if (Email.lastIndexOf('\'')!=-1)
		return false;
	else if ((i=Email.lastIndexOf('@'))==-1)
		return false;
	else
	{
		var tail=Email.substring(i+1,Email.length);
		if (tail.length<3)
			return false;
		else if ((i = tail.lastIndexOf('.'))==-1)
			return false;
		else
		{
			var tailend=tail.substring(i+1,tail.length);
			if (tailend.length==0)
				return false;
		}
	}
	return true;
}