<script type="text/javascript">
function FirstLetterCharacter(val) {
if (val.value.length > 0) {
var firstLetter = val.value.substring(0, 1);
var remainingLetters = val.value.substring(1);
firstLetter = firstLetter.replace(/[^a-zA-Z]/, '');
if (firstLetter == '')
message.style.display = "block";
else
message.style.display = "none";
val.value = firstLetter + remainingLetters;
}
}
</script>