<!--
function MM_displayStatusMsg(msgStr) { //v1.0
  status=msgStr;
  document.MM_returnValue = true;
}

function send_if_valid(){ if(
document.f.email.value.indexOf("@")== -1)
fail("No '@' in address");
else{
var adr=document.f.email.value.split("@");
if(adr[0].length<1) fail("User address absent");
else if(adr[1].indexOf(".")== -1) fail("No dot");
else if(adr[1].length<3) fail("domain incorrect");
else document.f.submit(); }
}
function fail(msg){
alert("Email Address Error:\n" +msg);}
//-->