<!-- Begin
function validateemail(){
var invalid1 = "yahoo.com";
var invalid2 = "msn.com";
var invalid4 = "aol.com";

if (document.contactform.email.value.indexOf(invalid1) > -1) {
alert("Unfortunately we unable to accept Yahoo.com e-mails, due to\nblocking from this service provider. Please choose another e-mail.");
return false;
}
else if (document.contactform.email.value.indexOf(invalid2) > -1) {
alert("Unfortunately we unable to accept MSN.com e-mails, due to\nblocking from this service provider. Please choose another e-mail.");
return false;
}
else if (document.contactform.email.value.indexOf(invalid4) > -1) {
alert("Unfortunately we unable to accept AOL.com e-mails, due to\nblocking from this service provider. Please choose another e-mail.");
return false;
}
else {
return true;
   }
}
//  End -->