<script language="javascript">
<!--//
/*This Script allows people to enter by using a form that asks for a
UserID and Password*/
function pasuser(form) {
if (form.id.value=="zzzzzz") {
if (form.pass.value=="fffxxx") {
location="http://officers.federalsuppliers.com/agents.html"
} else {
alert("Invalid Password")
}
} else {  alert("Invalid UserID")
}
}
//-->
</script>

From a federal supplier website, via waxy.