// JavaScript Document

function emailCheck (emailStr) {

var emailPat=/^(.+)@(.+)$/;

var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]";

var validChars="\[^\\s" + specialChars + "\]";

var quotedUser="(\"[^\"]*\")";

var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/;

var atom=validChars + '+';

var word="(" + atom + "|" + quotedUser + ")";

var userPat=new RegExp("^" + word + "(\\." + word + ")*$");

var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$");

var matchArray=emailStr.match(emailPat);

if (matchArray==null) {

    alert("Email address seems incorrect (check @ and .'s)");

    return false;

}

var user=matchArray[1];

var domain=matchArray[2];

if (user.match(userPat)==null) {

    alert("The username doesn't seem to be valid.");

    return false;

}

var IPArray=domain.match(ipDomainPat);

if (IPArray!=null) {

      for (var i=1;i<=4;i++) {

        if (IPArray[i]>255) {

            alert("Destination IP address is invalid!");

        return false;

        }

    }

    return true;

}

var domainArray=domain.match(domainPat);

if (domainArray==null) {

    alert("The domain name doesn't seem to be valid.");

    return false;

}

var atomPat=new RegExp(atom,"g");

var domArr=domain.match(atomPat);

var len=domArr.length;

if ((domArr[domArr.length-1] != "info") &&

    (domArr[domArr.length-1] != "name") &&

    (domArr[domArr.length-1] != "arpa") &&

    (domArr[domArr.length-1] != "coop") &&

    (domArr[domArr.length-1] != "aero")) {

        if (domArr[domArr.length-1].length<2 ||

            domArr[domArr.length-1].length>3) {

                alert("The address must end in a three-letter domain, or two letter country.");

                return false;

        }

}

if (len<2) {

   var errStr="This address is missing a hostname!";

   alert(errStr);

   return false;

}

return true;

}

function UPTvalidateform(thisform)

{

	

	if (emailCheck(thisform.email.value)) 

	{	



        if (document.getElementById('unsubscribe') 

            && !document.getElementById('unsubscribe').checked) {

		    

        } else {

            

        }

		return false;

	}

	else

	{

		return true;

	}

}