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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;i255) {
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].length3) {
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 (thisform.val_1.value==""){
alert("Please enter a value for First Name");
return(true);}if (thisform.val_2.value==""){
alert("Please enter a value for Last Name");
return(true);}
if (emailCheck(thisform.email.value))
{

if (document.getElementById('unsubscribe')
&& !document.getElementById('unsubscribe').checked) {
alert('Thank you for signing up!');
} else {
alert('Thank you for signing up!');
}
return false;
}
else
{
return true;
}
}

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