<HTML><HEAD><TITLE>Letter only, yes no only textfield </TITLE><SCRIPT> function lettersOnly(evt) { evt = (evt) ? evt : event; var charCode = (evt.charCode) ? evt.charCode : ((evt.keyCode) ? evt.keyCode : ((evt.which) ? evt.which : 0)); if (charCode > 31 && (charCode < 65 || charCode > 90) && (charCode < 97 || charCode > 122)) { alert("Enter letters only."); return false; } return true;}function ynOnly(evt) { evt = (evt) ? evt : event; var charCode = (evt.charCode) ? evt.charCode : ((evt.keyCode) ? evt.keyCode : ((evt.which) ? evt.which : 0)); if (charCode > 31 && charCode != 78 && charCode != 89 && charCode != 110 && charCode != 121) { alert("Enter "Y" or "N" only."); return false; } return true;}</script></head><body><form>Signature Present: <input type="text" name="signature" size="2" maxlength="1" onkeypress="return ynOnly(event)" /> (Y/N)</form></body></html>
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